{"id":18266,"date":"2026-07-18T20:51:16","date_gmt":"2026-07-18T11:51:16","guid":{"rendered":"https:\/\/genai-ai.co.jp\/ai-kanri\/?p=18266"},"modified":"2026-07-18T20:51:16","modified_gmt":"2026-07-18T11:51:16","slug":"cc-java-operators","status":"publish","type":"post","link":"https:\/\/genai-ai.co.jp\/ai-kanri\/blog\/cc-java-operators\/","title":{"rendered":"\u30102026\u5e747\u6708\u6700\u65b0\u3011Java\u306e\u6f14\u7b97\u5b50\u5b8c\u5168\u30ac\u30a4\u30c9\uff5c\u7b97\u8853\u30fb\u6bd4\u8f03\u30fb\u8ad6\u7406\u30fb\u30d3\u30c3\u30c8\u30fb\u512a\u5148\u9806\u4f4d\u3092\u7db2\u7f85"},"content":{"rendered":"\n<style>\n.g-flow-row{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;align-items:center;}\n.g-flow-item{background:linear-gradient(135deg,#1a1a1a,#2a1015);color:#fff;border-radius:8px;padding:16px 14px;min-width:130px;flex:1;text-align:center;}\n.g-flow-arrow{color:#dc2626;font-size:20px;font-weight:700;}\n.g-card-row{display:flex;gap:12px;flex-wrap:wrap;margin:0 0 32px;}\n.g-card-row>div{flex:1;min-width:220px;}\n@media(max-width:600px){\n  .g-flow-row{flex-direction:column;}\n  .g-flow-arrow{transform:rotate(90deg);}\n  .g-card-row{flex-direction:column;}\n  .g-card-row>div{min-width:100%;}\n}\n<\/style>\n\n\n\n<div style=\"margin:0 0 32px;\">\n  <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/07\/thumb-cc-java-operators.jpg\" alt=\"\u30102026\u5e747\u6708\u6700\u65b0\u3011Java\u306e\u6f14\u7b97\u5b50\u5b8c\u5168\u30ac\u30a4\u30c9\uff5c\u7b97\u8853\u30fb\u6bd4\u8f03\u30fb\u8ad6\u7406\u30fb\u30d3\u30c3\u30c8\u30fb\u512a\u5148\u9806\u4f4d\u3092\u7db2\u7f85\" style=\"width:100%;height:auto;border-radius:12px;display:block;\">\n<\/div>\n\n\n\n<div style=\"background:#f8f9fa;border-radius:12px;padding:24px 28px;margin:0 0 32px;border-left:4px solid #dc2626;\">\n  <p style=\"font-size:15px;font-weight:700;color:#1a1a1a;margin:0 0 16px;\">\u3053\u306e\u8a18\u4e8b\u306e\u5185\u5bb9<\/p>\n  <ol style=\"margin:0;padding-left:20px;font-size:14px;line-height:2.2;list-style:none;\">\n    <li><a href=\"#sec-01\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">01<\/span>Java\u306e\u6f14\u7b97\u5b50\u3068\u306f\u2015\u2015\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u8a08\u7b97\u30fb\u6bd4\u8f03\u30fb\u8ad6\u7406\u5224\u65ad\u306e\u57fa\u790e<\/a><\/li>\n    <li><a href=\"#sec-02\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">02<\/span>\u7b97\u8853\u6f14\u7b97\u5b50\u2015\u2015+\/-\/*\/\/\/%\u306e\u8a73\u7d30\u3068\u6574\u6570\u9664\u7b97\u30fb\u5b9f\u6570\u9664\u7b97\u306e\u9055\u3044<\/a><\/li>\n    <li><a href=\"#sec-03\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">03<\/span>\u6bd4\u8f03\u6f14\u7b97\u5b50\u2015\u2015==,!=,&lt;,&gt;,&lt;=,&gt;=\u306e\u4f7f\u3044\u65b9\u3068\u6ce8\u610f\u70b9<\/a><\/li>\n    <li><a href=\"#sec-04\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">04<\/span>\u4ee3\u5165\u6f14\u7b97\u5b50\u2015\u2015=,+=,-=,*=,\/=\u306a\u3069\u306e\u8907\u5408\u4ee3\u5165\u3092\u5b8c\u5168\u89e3\u8aac<\/a><\/li>\n    <li><a href=\"#sec-05\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">05<\/span>\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u30fb\u30c7\u30af\u30ea\u30e1\u30f3\u30c8\u2015\u2015++\/--\u306e\u524d\u7f6e\u3068\u5f8c\u7f6e\u306e\u9055\u3044\u3092\u8a73\u89e3<\/a><\/li>\n    <li><a href=\"#sec-06\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">06<\/span>\u8ad6\u7406\u6f14\u7b97\u5b50\u3068\u77ed\u7d61\u8a55\u4fa1\u2015\u2015&&,||,!\u306e\u9055\u3044\u3068&amp;|\u3068\u306e\u6bd4\u8f03<\/a><\/li>\n    <li><a href=\"#sec-07\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">07<\/span>\u4e09\u9805\u6f14\u7b97\u5b50\u2015\u2015if-else\u306e\u77ed\u7e2e\u5f62\u3068\u8aad\u307f\u3084\u3059\u3055\u306e\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5<\/a><\/li>\n    <li><a href=\"#sec-08\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">08<\/span>\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u3068\u30b7\u30d5\u30c8\u6f14\u7b97\u5b50\u2015\u2015\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u5b9f\u8df5<\/a><\/li>\n    <li><a href=\"#sec-09\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">09<\/span>instanceof\u6f14\u7b97\u5b50\u2015\u2015\u578b\u30c1\u30a7\u30c3\u30af\u3068\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u3067\u306e\u6d3b\u7528<\/a><\/li>\n    <li><a href=\"#sec-10\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">10<\/span>\u6f14\u7b97\u5b50\u306e\u512a\u5148\u9806\u4f4d\u2015\u2015\u62ec\u5f27\u3067\u660e\u793a\u3059\u308b\u91cd\u8981\u6027<\/a><\/li>\n    <li><a href=\"#sec-11\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">11<\/span>GENAI\u5b9f\u904b\u7528\u3067\u306eJava\u6d3b\u7528\u4e8b\u4f8b<\/a><\/li>\n    <li><a href=\"#sec-12\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">12<\/span>Claude Code\u306bJava\u30b3\u30fc\u30c9\u3092\u66f8\u304b\u305b\u308b\u65b9\u6cd5<\/a><\/li>\n    <li><a href=\"#faq\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">FAQ<\/span>\u3088\u304f\u3042\u308b\u8cea\u554f<\/a><\/li>\n  <\/ol>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c<code>++x<\/code>\u3068<code>x++<\/code>\u306f\u4f55\u304c\u9055\u3046\u306e\uff1f\u300d\u300c<code>&&<\/code>\u3068<code>&amp;<\/code>\u306f\u540c\u3058\u3058\u3083\u306a\u3044\u306e\uff1f\u300d\u300c\u6f14\u7b97\u5b50\u306e\u512a\u5148\u9806\u4f4d\u3067\u30d0\u30b0\u304c\u51fa\u305f\u300d\u2014\u2014Java\u3092\u5b66\u3076\u4e2d\u3067\u8ab0\u3082\u304c\u4e00\u5ea6\u306f\u58c1\u306b\u3076\u3064\u304b\u308b\u30c6\u30fc\u30de\u304c\u6f14\u7b97\u5b50\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Java\u306b\u306f\u7b97\u8853\u30fb\u6bd4\u8f03\u30fb\u4ee3\u5165\u30fb\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u30fb\u8ad6\u7406\u30fb\u4e09\u9805\u30fb\u30d3\u30c3\u30c8\u30fbinstanceof\u306a\u3069\u3001<strong>10\u7a2e\u985e\u4ee5\u4e0a\u306e\u6f14\u7b97\u5b50\u30ab\u30c6\u30b4\u30ea<\/strong>\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u52d5\u4f5c\u3068\u512a\u5148\u9806\u4f4d\u3092\u6b63\u3057\u304f\u7406\u89e3\u3057\u306a\u3044\u3068\u3001\u30b3\u30fc\u30c9\u304c\u601d\u3044\u901a\u308a\u306b\u52d5\u304b\u306a\u3044\u3053\u3068\u306f\u3082\u3061\u308d\u3093\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u3082\u5f71\u97ff\u304c\u51fa\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001<strong>Java\u306e\u6f14\u7b97\u5b50\u3092\u5168\u30ab\u30c6\u30b4\u30ea\u4f53\u7cfb\u7684\u306b\u89e3\u8aac<\/strong>\u3057\u307e\u3059\u3002\u7af6\u5408\u8a18\u4e8b\u306e2\u500d\u4ee5\u4e0a\u306e\u60c5\u5831\u5bc6\u5ea6\u3067\u3001\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u30fb\u6bd4\u8f03\u8868\u30fb\u843d\u3068\u3057\u7a74\u30fb\u5b9f\u52d9\u3067\u306e\u4f7f\u3044\u3069\u3053\u308d\u307e\u3067\u5b8c\u5168\u7db2\u7f85\u3002\u3055\u3089\u306b\u672b\u5c3e\u3067\u306f<strong>Claude Code\u3067Java\u30b3\u30fc\u30c9\u3092\u7d20\u65e9\u304f\u66f8\u304f\u65b9\u6cd5<\/strong>\u3082\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">Java\u306e\u6f14\u7b97\u5b50\u306f\u6570\u304c\u591a\u3044\u3067\u3059\u304c\u3001\u5b9f\u52d9\u3067\u65e5\u5e38\u7684\u306b\u4f7f\u3046\u306e\u306f\u7b97\u8853\u30fb\u6bd4\u8f03\u30fb\u8ad6\u7406\u30fb\u4ee3\u5165\u306e4\u7cfb\u7d71\u3067\u3059\u3002\u3053\u308c\u3092\u3057\u3063\u304b\u308a\u62bc\u3055\u3048\u305f\u4e0a\u3067\u3001\u4e09\u9805\u6f14\u7b97\u5b50\u3084\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u306f\u300c\u5fc5\u8981\u306b\u306a\u3063\u305f\u3068\u304d\u300d\u306b\u8abf\u3079\u308b\u3001\u3068\u3044\u3046\u5b66\u7fd2\u6226\u7565\u304c\u6700\u3082\u52b9\u7387\u7684\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u300c\u306a\u305c\u305d\u3046\u52d5\u304f\u306e\u304b\u300d\u3068\u3044\u3046\u4ed5\u7d44\u307f\u3092\u91cd\u8996\u3057\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002\u7279\u306b\u77ed\u7d61\u8a55\u4fa1\u3084\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u306e\u524d\u7f6e\u30fb\u5f8c\u7f6e\u306e\u9055\u3044\u306f\u3001\u5b9f\u969b\u306b\u30b3\u30fc\u30c9\u3092\u52d5\u304b\u3057\u3066\u4f53\u611f\u3059\u308b\u306e\u304c\u4e00\u756a\u306e\u8fd1\u9053\u3067\u3059\u3002\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u624b\u5143\u306eIDE\u3067\u8a66\u3057\u306a\u304c\u3089\u8aad\u307f\u9032\u3081\u3066\u304f\u3060\u3055\u3044\u3002<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3092\u8aad\u307f\u7d42\u3048\u308b\u3068\u3001\u4ee5\u4e0b\u306e7\u70b9\u304c\u660e\u78ba\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fafafa;border-radius:8px;padding:16px 20px;margin:16px 0;border-left:4px solid #dc2626;\">\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>Java\u306e\u6f14\u7b97\u5b50\u306e\u5168\u4f53\u5206\u985e<\/strong>\u3068\u5404\u30ab\u30c6\u30b4\u30ea\u306e\u5f79\u5272<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u7b97\u8853\u6f14\u7b97\u5b50\u306e\u6574\u6570\u9664\u7b97\u30fb\u5b9f\u6570\u9664\u7b97\u306e\u9055\u3044<\/strong>\u3068\u5270\u4f59\u6f14\u7b97\u5b50\u306e\u6d3b\u7528\u30d1\u30bf\u30fc\u30f3<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u524d\u7f6e\uff08++x\uff09\u3068\u5f8c\u7f6e\uff08x++\uff09\u306e\u9055\u3044<\/strong>\u3092\u5177\u4f53\u30b3\u30fc\u30c9\u3067\u7406\u89e3<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u8ad6\u7406\u6f14\u7b97\u5b50\u306e\u77ed\u7d61\u8a55\u4fa1\uff08&&,||\uff09<\/strong>\u3068\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\uff08&amp;,|\uff09\u306e\u4f7f\u3044\u5206\u3051<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u4e09\u9805\u6f14\u7b97\u5b50<\/strong>\u306e\u66f8\u304d\u65b9\u3068\u53ef\u8aad\u6027\u3092\u9ad8\u3081\u308b\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u30fb\u30b7\u30d5\u30c8\u6f14\u7b97\u5b50<\/strong>\u306b\u3088\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>Claude Code<\/strong>\u3067Java\u30b3\u30fc\u30c9\u3092\u81ea\u52d5\u751f\u6210\u30fb\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u65b9\u6cd5<\/span><\/div>\n\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-java-operators&#038;blog_slug=cc-java-operators\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-java-operators&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-01\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">01<\/span>\n  <span class=\"section-label\" style=\"display:block;\">OPERATORS OVERVIEW<\/span>\n  <span class=\"section-title\" style=\"display:block;\">Java\u306e\u6f14\u7b97\u5b50\u3068\u306f\u2015\u2015\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u8a08\u7b97\u30fb\u6bd4\u8f03\u30fb\u8ad6\u7406\u5224\u65ad\u306e\u57fa\u790e<\/span>\n  <span class=\"section-desc\">\u6f14\u7b97\u5b50\u306e\u5b9a\u7fa9\u30fb\u5206\u985e\u30fb\u30aa\u30da\u30e9\u30f3\u30c9\u306e\u6982\u5ff5\u3092\u6574\u7406\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6f14\u7b97\u5b50\uff08Operator\uff09\u3068\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u7279\u5b9a\u306e\u8a08\u7b97\u30fb\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306e\u8a18\u53f7\u307e\u305f\u306f\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u3059\u3002\u6570\u5b66\u3067\u300c+\u300d\u300c\u2212\u300d\u300c\u00d7\u300d\u300c\u00f7\u300d\u3092\u4f7f\u3063\u3066\u6570\u5024\u3092\u8a08\u7b97\u3059\u308b\u306e\u3068\u540c\u69d8\u306b\u3001Java\u3067\u3082\u69d8\u3005\u306a\u6f14\u7b97\u5b50\u3092\u4f7f\u3063\u3066\u5909\u6570\u306e\u64cd\u4f5c\u30fb\u6bd4\u8f03\u30fb\u8ad6\u7406\u5224\u65ad\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u6f14\u7b97\u5b50\uff08Operator\uff09<\/strong>\uff1a\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u7279\u5b9a\u306e\u8a08\u7b97\u3084\u64cd\u4f5c\u3092\u884c\u3046\u305f\u3081\u306e\u8a18\u53f7\u30fb\u30ad\u30fc\u30ef\u30fc\u30c9\u3002\u6f14\u7b97\u5b50\u304c\u51e6\u7406\u3059\u308b\u5bfe\u8c61\uff08\u5909\u6570\u3084\u5024\uff09\u3092\u300c\u30aa\u30da\u30e9\u30f3\u30c9\uff08Operand\uff09\u300d\u3068\u3044\u3044\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u300ca + b\u300d\u3067\u306f\u300c+\u300d\u304c\u6f14\u7b97\u5b50\u3001\u300ca\u300d\u3068\u300cb\u300d\u304c\u30aa\u30da\u30e9\u30f3\u30c9\u3067\u3059\u3002Java\u3067\u306f\u5358\u9805\u30fb\u4e8c\u9805\u30fb\u4e09\u9805\u306e3\u7a2e\u985e\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Java\u306e\u6f14\u7b97\u5b50\u306f\u6271\u3046\u30aa\u30da\u30e9\u30f3\u30c9\u306e\u6570\u306b\u3088\u3063\u3066\u6b21\u306e3\u7a2e\u985e\u306b\u5206\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u7a2e\u985e<\/th><th>\u8aac\u660e<\/th><th>\u4f8b<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u5358\u9805\u6f14\u7b97\u5b50\uff08Unary\uff09<\/td><td>\u30aa\u30da\u30e9\u30f3\u30c9\u304c1\u3064<\/td><td>++x, !flag, -value<\/td><\/tr>\n<tr><td>\u4e8c\u9805\u6f14\u7b97\u5b50\uff08Binary\uff09<\/td><td>\u30aa\u30da\u30e9\u30f3\u30c9\u304c2\u3064\uff08\u6700\u3082\u4e00\u822c\u7684\uff09<\/td><td>a + b, x == y, a &amp;&amp; b<\/td><\/tr>\n<tr><td>\u4e09\u9805\u6f14\u7b97\u5b50\uff08Ternary\uff09<\/td><td>\u30aa\u30da\u30e9\u30f3\u30c9\u304c3\u3064<\/td><td>condition ? a : b<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\">\u3055\u3089\u306b\u51e6\u7406\u306e\u7a2e\u985e\u306b\u3088\u3063\u3066\u4ee5\u4e0b\u306e\u30ab\u30c6\u30b4\u30ea\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u30ab\u30c6\u30b4\u30ea<\/th><th>\u4e3b\u306a\u6f14\u7b97\u5b50<\/th><th>\u5f79\u5272<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u7b97\u8853\u6f14\u7b97\u5b50<\/td><td>+, -, *, \/, %, ++, --<\/td><td>\u6570\u5024\u306e\u56db\u5247\u6f14\u7b97\u30fb\u4f59\u308a\u30fb\u5897\u6e1b<\/td><\/tr>\n<tr><td>\u6bd4\u8f03\u6f14\u7b97\u5b50<\/td><td>==, !=, &lt;, &gt;, &lt;=, &gt;=<\/td><td>2\u3064\u306e\u5024\u3092\u6bd4\u8f03\u3057\u3066\u771f\u507d\u3092\u8fd4\u3059<\/td><\/tr>\n<tr><td>\u4ee3\u5165\u6f14\u7b97\u5b50<\/td><td>=, +=, -=, *=, \/=, %=\u306a\u3069<\/td><td>\u5909\u6570\u3078\u306e\u4ee3\u5165\u30fb\u8907\u5408\u4ee3\u5165<\/td><\/tr>\n<tr><td>\u8ad6\u7406\u6f14\u7b97\u5b50<\/td><td>&amp;&amp;, ||, !<\/td><td>AND\u30fbOR\u30fbNOT\u8ad6\u7406\u6f14\u7b97\uff08\u77ed\u7d61\u8a55\u4fa1\u3042\u308a\uff09<\/td><\/tr>\n<tr><td>\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50<\/td><td>&amp;, |, ^, ~<\/td><td>\u30d3\u30c3\u30c8\uff082\u9032\u6570\uff09\u5358\u4f4d\u306e\u6f14\u7b97<\/td><\/tr>\n<tr><td>\u30b7\u30d5\u30c8\u6f14\u7b97\u5b50<\/td><td>&lt;&lt;, &gt;&gt;, &gt;&gt;&gt;<\/td><td>\u30d3\u30c3\u30c8\u3092\u5de6\u53f3\u306b\u30b7\u30d5\u30c8<\/td><\/tr>\n<tr><td>\u4e09\u9805\u6f14\u7b97\u5b50<\/td><td>? :<\/td><td>if-else\u306e\u77ed\u7e2e\u8a18\u6cd5<\/td><\/tr>\n<tr><td>instanceof\u6f14\u7b97\u5b50<\/td><td>instanceof<\/td><td>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u578b\u30c1\u30a7\u30c3\u30af<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div class=\"g-flow-row\" style=\"margin:24px 0;\">\n  <div class=\"g-flow-item\">\u6f14\u7b97\u5b50\u3092\u66f8\u304f<\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\">\u30aa\u30da\u30e9\u30f3\u30c9\u3092\u8a55\u4fa1<\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\">\u512a\u5148\u9806\u4f4d\u3092\u78ba\u8a8d<\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\">\u7d50\u679c\u3092\u8fd4\u3059<\/div>\n<\/div>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:18px;\">&#128161;<\/span>\n    <strong style=\"color:#16a34a;font-size:15px;\">\u5b66\u7fd2\u306e\u512a\u5148\u9806\u4f4d<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">Java\u6f14\u7b97\u5b50\u306f\u7a2e\u985e\u304c\u591a\u3044\u3067\u3059\u304c\u3001\u6700\u521d\u306f\u300c\u7b97\u8853\u30fb\u6bd4\u8f03\u30fb\u8ad6\u7406\u30fb\u4ee3\u5165\u300d\u306e4\u7cfb\u7d71\u306b\u96c6\u4e2d\u3057\u307e\u3057\u3087\u3046\u3002\u3053\u308c\u3060\u3051\u3067\u65e5\u5e38\u7684\u306aJava\u30b3\u30fc\u30c9\u306e9\u5272\u4ee5\u4e0a\u304c\u66f8\u3051\u307e\u3059\u3002\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u30fb\u30b7\u30d5\u30c8\u6f14\u7b97\u5b50\u306f\u4f4e\u30ec\u30d9\u30eb\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3084\u6700\u9069\u5316\u304c\u5fc5\u8981\u306b\u306a\u3063\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u5b66\u3076\u306e\u3067\u5341\u5206\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u6f14\u7b97\u5b50\u306e\u5206\u985e\u3092\u982d\u306b\u5165\u308c\u3066\u304a\u304f\u3068\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3084\u4ed5\u69d8\u66f8\u3092\u8aad\u3093\u3060\u3068\u304d\u306b\u300c\u3053\u306e\u6f14\u7b97\u5b50\u306f\u3069\u306e\u30ab\u30c6\u30b4\u30ea\u3067\u3001\u3069\u3046\u3044\u3046\u52d5\u4f5c\u3092\u3059\u308b\u306e\u304b\u300d\u304c\u3059\u3050\u5224\u65ad\u3067\u304d\u307e\u3059\u3002\u6700\u521d\u306f\u8868\u3068\u3057\u3066\u773a\u3081\u308b\u3060\u3051\u3067\u5927\u4e08\u592b\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-java-operators&#038;blog_slug=cc-java-operators\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-java-operators&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-02\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">02<\/span>\n  <span class=\"section-label\" style=\"display:block;\">ARITHMETIC OPERATORS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u7b97\u8853\u6f14\u7b97\u5b50\u2015\u2015+\/-\/*\/\/\/%\u306e\u8a73\u7d30\u3068\u6574\u6570\u9664\u7b97\u30fb\u5b9f\u6570\u9664\u7b97\u306e\u9055\u3044<\/span>\n  <span class=\"section-desc\">\u6700\u3082\u57fa\u672c\u7684\u306a\u6f14\u7b97\u5b50\u30b0\u30eb\u30fc\u30d7\u3002\u6574\u6570\u00f7\u6574\u6570\u306e\u843d\u3068\u3057\u7a74\u3092\u78ba\u5b9f\u306b\u7406\u89e3\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b97\u8853\u6f14\u7b97\u5b50\u306f\u6570\u5024\u306e\u8a08\u7b97\u306b\u4f7f\u3046\u6f14\u7b97\u5b50\u3067\u3001Java\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u6700\u3082\u3088\u304f\u767b\u5834\u3057\u307e\u3059\u3002\u8db3\u3057\u7b97\u30fb\u5f15\u304d\u7b97\u30fb\u639b\u3051\u7b97\u30fb\u5272\u308a\u7b97\u306b\u52a0\u3048\u3066\u3001\u4f59\u308a\u3092\u6c42\u3081\u308b<code>%<\/code>\u6f14\u7b97\u5b50\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u6f14\u7b97\u5b50<\/th><th>\u610f\u5473<\/th><th>\u4f8b<\/th><th>\u7d50\u679c<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>+<\/td><td>\u52a0\u7b97<\/td><td>10 + 3<\/td><td>13<\/td><\/tr>\n<tr><td>-<\/td><td>\u6e1b\u7b97<\/td><td>10 - 3<\/td><td>7<\/td><\/tr>\n<tr><td>*<\/td><td>\u4e57\u7b97<\/td><td>10 * 3<\/td><td>30<\/td><\/tr>\n<tr><td>\/<\/td><td>\u9664\u7b97<\/td><td>10 \/ 3<\/td><td>3\uff08\u6574\u6570\u9664\u7b97\uff09<\/td><\/tr>\n<tr><td>%<\/td><td>\u4f59\u308a\uff08\u5270\u4f59\uff09<\/td><td>10 % 3<\/td><td>1<\/td><\/tr>\n<tr><td>++<\/td><td>\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\uff08+1\uff09<\/td><td>++x \u307e\u305f\u306f x++<\/td><td>x\u304c1\u5897\u52a0<\/td><\/tr>\n<tr><td>--<\/td><td>\u30c7\u30af\u30ea\u30e1\u30f3\u30c8\uff08-1\uff09<\/td><td>--x \u307e\u305f\u306f x--<\/td><td>x\u304c1\u6e1b\u5c11<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<h3 class=\"wp-block-heading\">2-1. \u6574\u6570\u9664\u7b97\u3068\u5b9f\u6570\u9664\u7b97\u306e\u9055\u3044\uff08\u6700\u91cd\u8981\u306e\u843d\u3068\u3057\u7a74\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Java\u3067<strong>\u6574\u6570\u540c\u58eb\u3092\u300c\/\u300d\u3067\u5272\u308b\u3068\u3001\u7d50\u679c\u3082\u6574\u6570\u306b\u306a\u308a\u307e\u3059\uff08\u5c0f\u6570\u70b9\u4ee5\u4e0b\u306f\u5207\u308a\u6368\u3066\uff09<\/strong>\u3002\u3053\u308c\u306fJava\u7279\u6709\u3067\u306f\u306a\u304f\u591a\u304f\u306e\u8a00\u8a9e\u306b\u5171\u901a\u3059\u308b\u4ed5\u69d8\u3067\u3059\u304c\u3001\u521d\u5b66\u8005\u304c\u6700\u3082\u983b\u7e41\u306b\u30d0\u30b0\u3092\u8d77\u3053\u3059\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:20px;\">&#9888;&#65039;<\/span>\n    <strong style=\"color:#dc2626;font-size:16px;\">\u6574\u6570\u9664\u7b97\u306e\u7f60<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u300cint\u578b \/ int\u578b\u300d\u306e\u7d50\u679c\u306f\u5e38\u306bint\u578b\u3067\u3059\u3002\u305f\u3068\u3048\u3070\u300c10 \/ 3\u300d\u306e\u8a08\u7b97\u7d50\u679c\u306f\u300c3.333...\u300d\u3067\u306f\u306a\u304f\u300c3\u300d\u306b\u306a\u308a\u307e\u3059\u3002\u5272\u308a\u7b97\u3067\u5c0f\u6570\u70b9\u4ee5\u4e0b\u306e\u7d50\u679c\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u5c11\u306a\u304f\u3068\u3082\u4e00\u65b9\u306e\u30aa\u30da\u30e9\u30f3\u30c9\u3092\u300cdouble\u300d\u3084\u300cfloat\u300d\u306b\u30ad\u30e3\u30b9\u30c8\u3057\u3066\u304b\u3089\u8a08\u7b97\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#89b4fa;\">public class<\/span> <span style=\"color:#f9e2af;\">ArithmeticDemo<\/span> {\n    <span style=\"color:#89b4fa;\">public static void<\/span> main(String[] args) {\n        <span style=\"color:#6c7086;\">\/\/ \u6574\u6570\u9664\u7b97\uff1a\u5c0f\u6570\u70b9\u4ee5\u4e0b\u5207\u308a\u6368\u3066<\/span>\n        <span style=\"color:#cba6f7;\">int<\/span> a = 10, b = 3;\n        System.out.println(a \/ b);         <span style=\"color:#6c7086;\">\/\/ \u51fa\u529b: 3\uff083.333...\u3067\u306f\u306a\u3044\uff01\uff09<\/span>\n\n        <span style=\"color:#6c7086;\">\/\/ double\u578b\u306b\u30ad\u30e3\u30b9\u30c8\u3057\u3066\u5b9f\u6570\u9664\u7b97<\/span>\n        System.out.println((<span style=\"color:#cba6f7;\">double<\/span>) a \/ b);   <span style=\"color:#6c7086;\">\/\/ \u51fa\u529b: 3.3333333333333335<\/span>\n\n        <span style=\"color:#6c7086;\">\/\/ \u3069\u3061\u3089\u304b\u304cdouble\u30ea\u30c6\u30e9\u30eb\u306a\u3089\u81ea\u52d5\u7684\u306b\u5b9f\u6570\u9664\u7b97<\/span>\n        System.out.println(10.0 \/ 3);      <span style=\"color:#6c7086;\">\/\/ \u51fa\u529b: 3.3333333333333335<\/span>\n\n        <span style=\"color:#6c7086;\">\/\/ \u5270\u4f59\uff08\u4f59\u308a\uff09\u6f14\u7b97<\/span>\n        System.out.println(a % b);         <span style=\"color:#6c7086;\">\/\/ \u51fa\u529b: 1<\/span>\n        System.out.println(10 % 2);        <span style=\"color:#6c7086;\">\/\/ \u51fa\u529b: 0\uff08\u5076\u6570\u5224\u5b9a\u306b\u4f7f\u3048\u308b\uff09<\/span>\n    }\n}\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">2-2. \u5270\u4f59\u6f14\u7b97\u5b50\uff08%\uff09\u306e\u5b9f\u8df5\u7684\u306a\u4f7f\u3044\u3069\u3053\u308d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f59\u308a\u3092\u6c42\u3081\u308b<code>%<\/code>\u6f14\u7b97\u5b50\u306f\u3001\u300c\u5076\u6570\u30fb\u5947\u6570\u306e\u5224\u5b9a\u300d\u300c\u30eb\u30fc\u30d7\u306e\u4e00\u5b9a\u9593\u9694\u51e6\u7406\u300d\u300c\u914d\u5217\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u5faa\u74b0\u300d\u306a\u3069\u3001\u5b9f\u52d9\u3067\u3082\u983b\u7e41\u306b\u767b\u5834\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/\/ \u5076\u6570\u30fb\u5947\u6570\u306e\u5224\u5b9a\uff08\u696d\u52d9\u3067\u3088\u304f\u4f7f\u3046\u30d1\u30bf\u30fc\u30f3\uff09<\/span>\n<span style=\"color:#cba6f7;\">int<\/span> number = 42;\n<span style=\"color:#89b4fa;\">if<\/span> (number % 2 == 0) {\n    System.out.println(number + <span style=\"color:#a6e3a1;\">\" \u306f\u5076\u6570\"<\/span>);\n} <span style=\"color:#89b4fa;\">else<\/span> {\n    System.out.println(number + <span style=\"color:#a6e3a1;\">\" \u306f\u5947\u6570\"<\/span>);\n}\n\n<span style=\"color:#6c7086;\">\/\/ 100\u4ef6\u3054\u3068\u306b\u9032\u6357\u30ed\u30b0\u3092\u51fa\u529b<\/span>\n<span style=\"color:#89b4fa;\">for<\/span> (<span style=\"color:#cba6f7;\">int<\/span> i = 0; i &lt; 10000; i++) {\n    <span style=\"color:#89b4fa;\">if<\/span> (i % 100 == 0) {\n        System.out.println(i + <span style=\"color:#a6e3a1;\">\"\u4ef6\u51e6\u7406\u3057\u307e\u3057\u305f\"<\/span>);\n    }\n    <span style=\"color:#6c7086;\">\/\/ \u51e6\u7406...<\/span>\n}\n\n<span style=\"color:#6c7086;\">\/\/ \u914d\u5217\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u5faa\u74b0\uff080\u301c9\u3092\u7e70\u308a\u8fd4\u3059\uff09<\/span>\n<span style=\"color:#cba6f7;\">int<\/span>[] arr = <span style=\"color:#89b4fa;\">new int<\/span>[10];\n<span style=\"color:#cba6f7;\">int<\/span> index = counter % arr.length;\n<\/div>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u5270\u4f59\u6f14\u7b97\u5b50\uff08%\uff09<\/strong>\uff1aJava\u3067\u306f\u300c%\u300d\u6f14\u7b97\u5b50\u3067\u5272\u308a\u7b97\u306e\u4f59\u308a\u3092\u6c42\u3081\u307e\u3059\u3002\u300c10 % 3 = 1\u300d\uff0810\u00f73\u306e\u4f59\u308a\uff09\u3002\u8ca0\u306e\u6570\u3067\u306e\u5270\u4f59\u306fJava\u3067\u306f\u7b26\u53f7\u304c\u3042\u308b\u70b9\u306b\u6ce8\u610f\u3002\u300c-10 % 3 = -1\u300d\uff08Python\u3067\u306f2\uff09\u3002\u696d\u52d9\u3067\u306f\u5076\u5947\u5224\u5b9a\u30fb\u5468\u671f\u51e6\u7406\u30fb\u30cf\u30c3\u30b7\u30e5\u8a08\u7b97\u306a\u3069\u3067\u591a\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u5f0a\u793e\u306eJava\u3092\u4f7f\u3046\u81ea\u52d5\u5316\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u5270\u4f59\u6f14\u7b97\u5b50\u3092\u30d0\u30c3\u30c1\u51e6\u7406\u306e\u5206\u5272\u306b\u591a\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u300c\u9867\u5ba2ID\u309210\u3067\u5272\u3063\u305f\u4f59\u308a\u3067\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u5148\u3092\u6c7a\u3081\u308b\u300d\u3068\u3044\u3063\u305f\u4f7f\u3044\u65b9\u3067\u3059\u3002\u5730\u5473\u306a\u6f14\u7b97\u5b50\u3067\u3059\u304c\u3001\u5b9f\u52d9\u3067\u306f\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-java-operators&#038;blog_slug=cc-java-operators\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-java-operators&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-03\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">03<\/span>\n  <span class=\"section-label\" style=\"display:block;\">COMPARISON OPERATORS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u6bd4\u8f03\u6f14\u7b97\u5b50\u2015\u2015==,!=,<,>,<=,>=\u306e\u4f7f\u3044\u65b9\u3068\u6ce8\u610f\u70b9<\/span>\n  <span class=\"section-desc\">\u7b49\u5024\u6bd4\u8f03\u3068\u5927\u5c0f\u6bd4\u8f03\u306e\u9055\u3044\u3001String\u306e\u6bd4\u8f03\u3067\u3088\u304f\u3042\u308b\u30df\u30b9\u3092\u89e3\u8aac<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6bd4\u8f03\u6f14\u7b97\u5b50\u306f2\u3064\u306e\u5024\u3092\u6bd4\u8f03\u3057\u3066\u3001<code>true<\/code>\u307e\u305f\u306f<code>false<\/code>\u306e<code>boolean<\/code>\u578b\u306e\u5024\u3092\u8fd4\u3059\u6f14\u7b97\u5b50\u3067\u3059\u3002<code>if<\/code>\u6587\u3084<code>while<\/code>\u6587\u306e\u6761\u4ef6\u5f0f\u3067\u5fc5\u305a\u767b\u5834\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u6f14\u7b97\u5b50<\/th><th>\u610f\u5473<\/th><th>\u4f8b<\/th><th>\u7d50\u679c\uff08a=10, b=3\u306e\u3068\u304d\uff09<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>==<\/td><td>\u7b49\u3057\u3044\uff08\u7b49\u5024\uff09<\/td><td>a == b<\/td><td>false<\/td><\/tr>\n<tr><td>!=<\/td><td>\u7b49\u3057\u304f\u306a\u3044<\/td><td>a != b<\/td><td>true<\/td><\/tr>\n<tr><td>&lt;<\/td><td>\u5c0f\u3055\u3044<\/td><td>a &lt; b<\/td><td>false<\/td><\/tr>\n<tr><td>&gt;<\/td><td>\u5927\u304d\u3044<\/td><td>a &gt; b<\/td><td>true<\/td><\/tr>\n<tr><td>&lt;=<\/td><td>\u4ee5\u4e0b<\/td><td>a &lt;= 10<\/td><td>true<\/td><\/tr>\n<tr><td>&gt;=<\/td><td>\u4ee5\u4e0a<\/td><td>b &gt;= 3<\/td><td>true<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#89b4fa;\">public class<\/span> <span style=\"color:#f9e2af;\">ComparisonDemo<\/span> {\n    <span style=\"color:#89b4fa;\">public static void<\/span> main(String[] args) {\n        <span style=\"color:#cba6f7;\">int<\/span> score = 85;\n\n        <span style=\"color:#6c7086;\">\/\/ \u6bd4\u8f03\u6f14\u7b97\u5b50\u306b\u3088\u308b\u6761\u4ef6\u5206\u5c90<\/span>\n        <span style=\"color:#89b4fa;\">if<\/span> (score >= 90) {\n            System.out.println(<span style=\"color:#a6e3a1;\">\"\u512a\u79c0\"<\/span>);\n        } <span style=\"color:#89b4fa;\">else if<\/span> (score >= 70) {\n            System.out.println(<span style=\"color:#a6e3a1;\">\"\u5408\u683c\"<\/span>);\n        } <span style=\"color:#89b4fa;\">else<\/span> {\n            System.out.println(<span style=\"color:#a6e3a1;\">\"\u4e0d\u5408\u683c\"<\/span>);\n        }\n\n        <span style=\"color:#6c7086;\">\/\/ \u6bd4\u8f03\u6f14\u7b97\u5b50\u306e\u7d50\u679c\u306fboolean\u578b<\/span>\n        <span style=\"color:#cba6f7;\">boolean<\/span> isAdult = score >= 20;\n        System.out.println(isAdult);  <span style=\"color:#6c7086;\">\/\/ true<\/span>\n    }\n}\n<\/div>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:20px;\">&#9888;&#65039;<\/span>\n    <strong style=\"color:#dc2626;font-size:16px;\">String\u306e\u6bd4\u8f03\u3067\u300c==\u300d\u3092\u4f7f\u3063\u3066\u306f\u3044\u3051\u306a\u3044\uff01<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">Java\u3067\u306f\u300c==\u300d\u6f14\u7b97\u5b50\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u53c2\u7167\uff08\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9\uff09\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002\u6587\u5b57\u5217\u306e\u5185\u5bb9\u3092\u6bd4\u8f03\u3057\u305f\u3044\u5834\u5408\u306f\u5fc5\u305a\u300c.equals()\u300d\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u300cstr1 == str2\u300d\u3067\u3082\u5076\u7136true\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u304c\uff08\u6587\u5b57\u5217\u5b9a\u6570\u30d7\u30fc\u30eb\u306e\u6700\u9069\u5316\uff09\u3001\u3053\u308c\u306f\u5b9f\u88c5\u4f9d\u5b58\u306e\u52d5\u4f5c\u3067\u3059\u3002\u5e38\u306b\u300cstr1.equals(str2)\u300d\u3092\u4f7f\u3046\u7fd2\u6163\u3092\u3064\u3051\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/\/ NG: \u53c2\u7167\u3092\u6bd4\u8f03\uff08\u6587\u5b57\u5217\u306e\u5185\u5bb9\u3067\u306f\u306a\u3044\uff09<\/span>\nString s1 = <span style=\"color:#89b4fa;\">new<\/span> String(<span style=\"color:#a6e3a1;\">\"hello\"<\/span>);\nString s2 = <span style=\"color:#89b4fa;\">new<\/span> String(<span style=\"color:#a6e3a1;\">\"hello\"<\/span>);\nSystem.out.println(s1 == s2);      <span style=\"color:#6c7086;\">\/\/ false\uff08\u53c2\u7167\u304c\u7570\u306a\u308b\uff09<\/span>\n\n<span style=\"color:#6c7086;\">\/\/ OK: \u5185\u5bb9\u3092\u6bd4\u8f03<\/span>\nSystem.out.println(s1.equals(s2)); <span style=\"color:#6c7086;\">\/\/ true<\/span>\n\n<span style=\"color:#6c7086;\">\/\/ null\u5b89\u5168\u306a\u6bd4\u8f03\uff08s1\u304cnull\u3067\u3082NullPointerException\u304c\u51fa\u306a\u3044\uff09<\/span>\nSystem.out.println(<span style=\"color:#a6e3a1;\">\"hello\"<\/span>.equals(s1)); <span style=\"color:#6c7086;\">\/\/ true\uff08\u5b9a\u6570\u30ea\u30c6\u30e9\u30eb\u3092\u5148\u306b\u7f6e\u304f\uff09<\/span>\n<\/div>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u7b49\u5024\u6bd4\u8f03\uff08==\uff09\u3068\u7b49\u4fa1\u6bd4\u8f03\uff08equals\uff09<\/strong>\uff1aJava\u306e\u300c==\u300d\u306f\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\uff08int, double\u7b49\uff09\u3067\u306f\u5024\u3092\u6bd4\u8f03\u3057\u307e\u3059\u304c\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff08String, ArrayList\u7b49\uff09\u3067\u306f\u53c2\u7167\u5148\uff08\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9\uff09\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002\u6587\u5b57\u5217\u306a\u3069\u53c2\u7167\u578b\u306e\u300c\u5185\u5bb9\u306e\u4e00\u81f4\u300d\u3092\u78ba\u8a8d\u3057\u305f\u3044\u5834\u5408\u306f\u300c.equals()\u300d\u3092\u4f7f\u3044\u307e\u3059\u3002Java\u306e\u6bd4\u8f03\u3067\u3088\u304f\u3042\u308b\u30d0\u30b0\u306e\u4ee3\u8868\u4f8b\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">String\u306e\u30a4\u30b3\u30fc\u30ebNG\u306f\u3001Java\u3092\u59cb\u3081\u3066\u6700\u521d\u306e1\u9031\u9593\u4ee5\u5185\u306b\u5fc5\u305a\u4e00\u5ea6\u306f\u8e0f\u3080\u30d0\u30b0\u3067\u3059\u3002\u300c\u306a\u3093\u3067\u540c\u3058\u6587\u5b57\u306a\u306e\u306bfalse\u306b\u306a\u308b\u3093\u3060\uff01\u300d\u3068\u30cf\u30de\u3063\u305f\u7d4c\u9a13\u304c\u3042\u308b\u65b9\u3082\u591a\u3044\u3067\u3057\u3087\u3046\u3002==\u3068equals\u306e\u9055\u3044\u3092\u4eca\u3053\u306e\u5834\u3067\u78ba\u5b9f\u306b\u899a\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-java-operators&#038;blog_slug=cc-java-operators\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-java-operators&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-04\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">04<\/span>\n  <span class=\"section-label\" style=\"display:block;\">ASSIGNMENT OPERATORS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u4ee3\u5165\u6f14\u7b97\u5b50\u2015\u2015=,+=,-=,*=,\/=\u306a\u3069\u306e\u8907\u5408\u4ee3\u5165\u3092\u5b8c\u5168\u89e3\u8aac<\/span>\n  <span class=\"section-desc\">\u5909\u6570\u3078\u306e\u4ee3\u5165\u3068\u8907\u5408\u4ee3\u5165\u6f14\u7b97\u5b50\u306e\u52d5\u4f5c\u3092\u6574\u7406\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee3\u5165\u6f14\u7b97\u5b50\u306f\u5909\u6570\u306b\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u305f\u3081\u306e\u6f14\u7b97\u5b50\u3067\u3059\u3002\u57fa\u672c\u306e<code>=<\/code>\u306b\u52a0\u3048\u3066\u3001\u7b97\u8853\u6f14\u7b97\u3068\u4ee3\u5165\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u300c\u8907\u5408\u4ee3\u5165\u6f14\u7b97\u5b50\u300d\u304c\u3042\u308a\u307e\u3059\u3002\u30b3\u30fc\u30c9\u3092\u77ed\u304f\u66f8\u3051\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u53ef\u8aad\u6027\u3082\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u6f14\u7b97\u5b50<\/th><th>\u610f\u5473<\/th><th>\u4f8b\uff08x=10\u306e\u3068\u304d\uff09<\/th><th>\u5b9f\u884c\u5f8c\u306ex<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>=<\/td><td>\u4ee3\u5165<\/td><td>x = 5<\/td><td>5<\/td><\/tr>\n<tr><td>+=<\/td><td>\u52a0\u7b97\u3057\u3066\u4ee3\u5165<\/td><td>x += 3<\/td><td>13<\/td><\/tr>\n<tr><td>-=<\/td><td>\u6e1b\u7b97\u3057\u3066\u4ee3\u5165<\/td><td>x -= 3<\/td><td>7<\/td><\/tr>\n<tr><td>*=<\/td><td>\u4e57\u7b97\u3057\u3066\u4ee3\u5165<\/td><td>x *= 3<\/td><td>30<\/td><\/tr>\n<tr><td>\/=<\/td><td>\u9664\u7b97\u3057\u3066\u4ee3\u5165<\/td><td>x \/= 3<\/td><td>3<\/td><\/tr>\n<tr><td>%=<\/td><td>\u4f59\u308a\u3092\u4ee3\u5165<\/td><td>x %= 3<\/td><td>1<\/td><\/tr>\n<tr><td>&amp;=<\/td><td>\u30d3\u30c3\u30c8AND\u3057\u3066\u4ee3\u5165<\/td><td>x &amp;= 0xFF<\/td><td>\u30d3\u30c3\u30c8\u6f14\u7b97\u7d50\u679c<\/td><\/tr>\n<tr><td>|=<\/td><td>\u30d3\u30c3\u30c8OR\u3057\u3066\u4ee3\u5165<\/td><td>x |= 0x01<\/td><td>\u30d3\u30c3\u30c8\u6f14\u7b97\u7d50\u679c<\/td><\/tr>\n<tr><td>&lt;&lt;=<\/td><td>\u5de6\u30b7\u30d5\u30c8\u3057\u3066\u4ee3\u5165<\/td><td>x &lt;&lt;= 2<\/td><td>x * 4\u76f8\u5f53<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#89b4fa;\">public class<\/span> <span style=\"color:#f9e2af;\">AssignmentDemo<\/span> {\n    <span style=\"color:#89b4fa;\">public static void<\/span> main(String[] args) {\n        <span style=\"color:#cba6f7;\">int<\/span> total = 0;\n\n        <span style=\"color:#6c7086;\">\/\/ \u8907\u5408\u4ee3\u5165\u6f14\u7b97\u5b50\u306b\u3088\u308b\u5408\u8a08\u8a08\u7b97<\/span>\n        total += 100;  <span style=\"color:#6c7086;\">\/\/ total = total + 100 \u3068\u540c\u3058<\/span>\n        total += 250;\n        total += 80;\n        System.out.println(total);  <span style=\"color:#6c7086;\">\/\/ 430<\/span>\n\n        <span style=\"color:#6c7086;\">\/\/ \u4e57\u7b97\u4ee3\u5165\u3067\u30dd\u30a4\u30f3\u30c8\u8a08\u7b97<\/span>\n        <span style=\"color:#cba6f7;\">double<\/span> price = 1000.0;\n        price *= 1.1;  <span style=\"color:#6c7086;\">\/\/ 10%\u5897\u3057\uff08\u6d88\u8cbb\u7a0e\uff09<\/span>\n        System.out.println(price);  <span style=\"color:#6c7086;\">\/\/ 1100.0<\/span>\n\n        <span style=\"color:#6c7086;\">\/\/ \u9023\u7d9a\u4ee3\u5165\uff08\u53f3\u304b\u3089\u5de6\u306b\u8a55\u4fa1\uff09<\/span>\n        <span style=\"color:#cba6f7;\">int<\/span> a, b, c;\n        a = b = c = 10;  <span style=\"color:#6c7086;\">\/\/ a,b,c\u3059\u3079\u3066\u306b10\u304c\u4ee3\u5165\u3055\u308c\u308b<\/span>\n        System.out.println(a + \",\" + b + \",\" + c);  <span style=\"color:#6c7086;\">\/\/ 10,10,10<\/span>\n    }\n}\n<\/div>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:18px;\">&#128161;<\/span>\n    <strong style=\"color:#16a34a;font-size:15px;\">\u8907\u5408\u4ee3\u5165\u6f14\u7b97\u5b50\u306e\u4f7f\u3044\u3069\u3053\u308d<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u300cx = x + 1\u300d\u3088\u308a\u300cx += 1\u300d\u306e\u65b9\u304c\u77ed\u304f\u66f8\u3051\u307e\u3059\u304c\u3001\u5358\u306a\u308b\u7565\u8a18\u3060\u3051\u3067\u306a\u304f\u3001\u30b3\u30fc\u30c9\u306e\u610f\u56f3\uff08\u300cx\u306b1\u3092\u8db3\u3059\u300d\u3068\u3044\u3046\u64cd\u4f5c\uff09\u304c\u660e\u78ba\u306b\u306a\u308b\u5229\u70b9\u3082\u3042\u308a\u307e\u3059\u3002\u30eb\u30fc\u30d7\u3067\u30ab\u30a6\u30f3\u30bf\u3092\u5897\u3084\u3059\u3001\u5408\u8a08\u3092\u7d2f\u7a4d\u3059\u308b\u3001\u5272\u5f15\u7387\u3092\u9069\u7528\u3059\u308b\u306a\u3069\u3001\u5909\u6570\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u308b\u51e6\u7406\u306b\u7a4d\u6975\u7684\u306b\u4f7f\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u8907\u5408\u4ee3\u5165\u6f14\u7b97\u5b50\u306f\u7701\u7565\u8a18\u6cd5\u306b\u898b\u3048\u307e\u3059\u304c\u3001\u5b9f\u969b\u306b\u306f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u7684\u306a\u30e1\u30ea\u30c3\u30c8\u3082\u5834\u5408\u306b\u3088\u3063\u3066\u306f\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057Java\u3067\u306f\u73fe\u4ee3\u7684\u306a\u30b3\u30f3\u30d1\u30a4\u30e9\u304c\u3069\u3061\u3089\u3082\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u3001\u4e3b\u306a\u5229\u70b9\u306f\u53ef\u8aad\u6027\u3067\u3059\u3002\u300ctotal += amount\u300d\u306f\u300c\u5408\u8a08\u306bamount\u3092\u8ffd\u52a0\u3059\u308b\u300d\u3068\u3044\u3046\u610f\u56f3\u304c\u30b9\u30c3\u30ad\u30ea\u4f1d\u308f\u308a\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-java-operators&#038;blog_slug=cc-java-operators\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-java-operators&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-05\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">05<\/span>\n  <span class=\"section-label\" style=\"display:block;\">INCREMENT & DECREMENT<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u30fb\u30c7\u30af\u30ea\u30e1\u30f3\u30c8\u2015\u2015++\/--\u306e\u524d\u7f6e\u3068\u5f8c\u7f6e\u306e\u9055\u3044\u3092\u8a73\u89e3<\/span>\n  <span class=\"section-desc\">\u524d\u7f6e\u3068\u5f8c\u7f6e\u306e\u8a55\u4fa1\u30bf\u30a4\u30df\u30f3\u30b0\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u91cd\u8981<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\uff08<code>++<\/code>\uff09\u306f\u5909\u6570\u306e\u5024\u30921\u5897\u3084\u3057\u3001\u30c7\u30af\u30ea\u30e1\u30f3\u30c8\uff08<code>--<\/code>\uff09\u306f1\u6e1b\u3089\u3059\u6f14\u7b97\u5b50\u3067\u3059\u3002\u30b7\u30f3\u30d7\u30eb\u306b\u898b\u3048\u307e\u3059\u304c\u3001<strong>\u524d\u7f6e\uff08<code>++x<\/code>\uff09\u3068\u5f8c\u7f6e\uff08<code>x++<\/code>\uff09\u3067\u306f\u5f0f\u306e\u8a55\u4fa1\u7d50\u679c\u304c\u7570\u306a\u308b<\/strong>\u3068\u3044\u3046\u91cd\u8981\u306a\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u524d\u7f6e\u3068\u5f8c\u7f6e\u306e\u8a55\u4fa1\u30bf\u30a4\u30df\u30f3\u30b0<\/strong>\uff1a\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\/\u30c7\u30af\u30ea\u30e1\u30f3\u30c8\u6f14\u7b97\u5b50\u306f\u5909\u6570\u306e\u524d\uff08\u524d\u7f6e: ++x\uff09\u304b\u5f8c\u308d\uff08\u5f8c\u7f6e: x++\uff09\u306b\u4ed8\u3051\u307e\u3059\u3002\u3069\u3061\u3089\u3082\u300c\u5909\u6570\u30921\u5897\u3084\u3059\u300d\u3068\u3044\u3046\u70b9\u306f\u540c\u3058\u3067\u3059\u304c\u3001\u300c\u5f0f\u5168\u4f53\u306e\u5024\uff08\u8a55\u4fa1\u7d50\u679c\uff09\u300d\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u524d\u7f6e\u306f\u300c\u5897\u3084\u3057\u3066\u304b\u3089\u5f0f\u3092\u8a55\u4fa1\u300d\u3001\u5f8c\u7f6e\u306f\u300c\u5f0f\u3092\u8a55\u4fa1\u3057\u3066\u304b\u3089\u5897\u3084\u3059\u300d\u306e\u304c\u9244\u5247\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<table>\n<thead><tr><th>\u8a18\u6cd5<\/th><th>\u52d5\u4f5c\u9806\u5e8f<\/th><th>x\u304c5\u306e\u3068\u304d\u300cy = ++x\u300d\u307e\u305f\u306f\u300cy = x++\u300d<\/th><th>\u5b9f\u884c\u5f8c\u306ex<\/th><th>\u5b9f\u884c\u5f8c\u306ey<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u524d\u7f6e: ++x<\/td><td>\u5148\u306bx\u3092+1 \u2192 y\u306b\u4ee3\u5165<\/td><td>y = ++x<\/td><td>6<\/td><td>6\uff08\u5897\u3084\u3057\u3066\u304b\u3089\u4ee3\u5165\uff09<\/td><\/tr>\n<tr><td>\u5f8c\u7f6e: x++<\/td><td>y\u306b\u4ee3\u5165 \u2192 \u305d\u306e\u5f8cx\u3092+1<\/td><td>y = x++<\/td><td>6<\/td><td>5\uff08\u5143\u306e\u5024\u304c\u4ee3\u5165\u3055\u308c\u308b\uff09<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#89b4fa;\">public class<\/span> <span style=\"color:#f9e2af;\">IncrementDemo<\/span> {\n    <span style=\"color:#89b4fa;\">public static void<\/span> main(String[] args) {\n        <span style=\"color:#6c7086;\">\/\/ \u524d\u7f6e\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\uff08++x\uff09\u306e\u4f8b<\/span>\n        <span style=\"color:#cba6f7;\">int<\/span> x = 5;\n        <span style=\"color:#cba6f7;\">int<\/span> y = ++x;  <span style=\"color:#6c7086;\">\/\/ x\u3092\u5148\u306b6\u306b\u3057\u3066\u304b\u3089y\u306b\u4ee3\u5165<\/span>\n        System.out.println(\"x=\" + x + \", y=\" + y);  <span style=\"color:#6c7086;\">\/\/ x=6, y=6<\/span>\n\n        <span style=\"color:#6c7086;\">\/\/ \u5f8c\u7f6e\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\uff08x++\uff09\u306e\u4f8b<\/span>\n        <span style=\"color:#cba6f7;\">int<\/span> a = 5;\n        <span style=\"color:#cba6f7;\">int<\/span> b = a++;  <span style=\"color:#6c7086;\">\/\/ b\u306b5\u3092\u4ee3\u5165\u3057\u3066\u304b\u3089a\u30926\u306b\u3059\u308b<\/span>\n        System.out.println(\"a=\" + a + \", b=\" + b);  <span style=\"color:#6c7086;\">\/\/ a=6, b=5<\/span>\n\n        <span style=\"color:#6c7086;\">\/\/ for\u30eb\u30fc\u30d7\u3067\u306f\u524d\u7f6e\u30fb\u5f8c\u7f6e\u3069\u3061\u3089\u3067\u3082\u540c\u3058\u7d50\u679c<\/span>\n        <span style=\"color:#89b4fa;\">for<\/span> (<span style=\"color:#cba6f7;\">int<\/span> i = 0; i &lt; 5; i++) {  <span style=\"color:#6c7086;\">\/\/ i++\u3067\u3082OK<\/span>\n            System.out.print(i + \" \");\n        }\n        <span style=\"color:#6c7086;\">\/\/ \u51fa\u529b: 0 1 2 3 4<\/span>\n    }\n}\n<\/div>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:20px;\">&#9888;&#65039;<\/span>\n    <strong style=\"color:#dc2626;font-size:16px;\">\u524d\u7f6e\u30fb\u5f8c\u7f6e\u3092\u5f0f\u306e\u4e2d\u3067\u4f7f\u3046\u306e\u306f\u5371\u967a<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\/\u30c7\u30af\u30ea\u30e1\u30f3\u30c8\u3092\u8907\u96d1\u306a\u5f0f\u306e\u4e00\u90e8\u3068\u3057\u3066\u4f7f\u3046\u3068\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u304c\u4e0b\u304c\u308a\u3001\u30d0\u30b0\u306e\u6e29\u5e8a\u306b\u306a\u308a\u307e\u3059\u3002\u300carr[i++] = arr[j--]\u300d\u306e\u3088\u3046\u306a\u66f8\u304d\u65b9\u306f\u52d5\u4f5c\u3059\u308b\u3082\u306e\u306e\u3001\u610f\u56f3\u304c\u5206\u304b\u308a\u306b\u304f\u304f\u3001\u30c1\u30fc\u30e0\u3067\u306e\u4fdd\u5b88\u6027\u304c\u4e0b\u304c\u308a\u307e\u3059\u3002\u5358\u72ec\u306e\u6587\u3068\u3057\u3066\u300ci++; \u300d\u304b\u300c++i; \u300d\u3068\u66f8\u304f\u306e\u304c\u5b89\u5168\u3067\u63a8\u5968\u3055\u308c\u308b\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u30b9\u30bf\u30a4\u30eb\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">for\u30eb\u30fc\u30d7\u3067\u306f\u300ci++\u300d\u3067\u3082\u300c++i\u300d\u3067\u3082\u52d5\u4f5c\u306f\u540c\u3058\u3067\u3059\u3002\u3057\u304b\u3057\u300cy = i++\u300d\u306e\u3088\u3046\u306b\u4ee3\u5165\u5f0f\u306e\u4e2d\u3067\u4f7f\u3046\u3068\u52d5\u4f5c\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u524d\u7f6e\u30fb\u5f8c\u7f6e\u306e\u9055\u3044\u3092\u554f\u308f\u308c\u308b\u306e\u306f\u8a66\u9a13\u554f\u984c\u306e\u5b9a\u756a\u3067\u3082\u3042\u308b\u306e\u3067\u3001\u5177\u4f53\u7684\u306a\u30b3\u30fc\u30c9\u3067\u624b\u3092\u52d5\u304b\u3057\u3066\u78ba\u5b9f\u306b\u7406\u89e3\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-java-operators&#038;blog_slug=cc-java-operators\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-java-operators&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-06\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">06<\/span>\n  <span class=\"section-label\" style=\"display:block;\">LOGICAL OPERATORS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u8ad6\u7406\u6f14\u7b97\u5b50\u3068\u77ed\u7d61\u8a55\u4fa1\u2015\u2015&&,||,!\u306e\u9055\u3044\u3068&|\u3068\u306e\u6bd4\u8f03<\/span>\n  <span class=\"section-desc\">\u77ed\u7d61\u8a55\u4fa1\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u30d0\u30b0\u9632\u6b62\u30fb\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a\u304c\u5b9f\u73fe\u3067\u304d\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u8ad6\u7406\u6f14\u7b97\u5b50\u306f<code>boolean<\/code>\u578b\u306e\u5024\uff08true\u307e\u305f\u306ffalse\uff09\u306b\u5bfe\u3057\u3066\u8ad6\u7406\u6f14\u7b97\u3092\u884c\u3046\u6f14\u7b97\u5b50\u3067\u3059\u3002<code>if<\/code>\u6587\u3067\u8907\u6570\u306e\u6761\u4ef6\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3068\u304d\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002Java\u306b\u306f<code>&amp;&amp;<\/code>\uff08\u8ad6\u7406AND\uff09\u30fb<code>||<\/code>\uff08\u8ad6\u7406OR\uff09\u30fb<code>!<\/code>\uff08\u8ad6\u7406NOT\uff09\u306e3\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u6f14\u7b97\u5b50<\/th><th>\u610f\u5473<\/th><th>\u4f8b<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>&amp;&amp;<\/td><td>\u8ad6\u7406AND\uff08\u304b\u3064\uff09<\/td><td>a &gt; 0 &amp;&amp; b &gt; 0<\/td><td>\u4e21\u65b9true\u306e\u3068\u304d\u3060\u3051true\u3002\u77ed\u7d61\u8a55\u4fa1\u3042\u308a<\/td><\/tr>\n<tr><td>||<\/td><td>\u8ad6\u7406OR\uff08\u307e\u305f\u306f\uff09<\/td><td>a &gt; 0 || b &gt; 0<\/td><td>\u3069\u3061\u3089\u304b\u304ctrue\u306a\u3089true\u3002\u77ed\u7d61\u8a55\u4fa1\u3042\u308a<\/td><\/tr>\n<tr><td>!<\/td><td>\u8ad6\u7406NOT\uff08\u5426\u5b9a\uff09<\/td><td>!flag<\/td><td>true\u3092false\u306b\u3001false\u3092true\u306b\u53cd\u8ee2<\/td><\/tr>\n<tr><td>&amp;<\/td><td>\u30d3\u30c3\u30c8AND\uff08\u8ad6\u7406AND\uff09<\/td><td>a &amp; b<\/td><td>\u4e21\u65b9\u8a55\u4fa1\u3057\u3066\u304b\u3089AND\u3002\u77ed\u7d61\u8a55\u4fa1\u306a\u3057<\/td><\/tr>\n<tr><td>|<\/td><td>\u30d3\u30c3\u30c8OR\uff08\u8ad6\u7406OR\uff09<\/td><td>a | b<\/td><td>\u4e21\u65b9\u8a55\u4fa1\u3057\u3066\u304b\u3089OR\u3002\u77ed\u7d61\u8a55\u4fa1\u306a\u3057<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u77ed\u7d61\u8a55\u4fa1\uff08Short-circuit Evaluation\uff09<\/strong>\uff1aJava\u306e\u300c&&\u300d\u3068\u300c||\u300d\u306b\u306f\u300c\u77ed\u7d61\u8a55\u4fa1\u300d\u3068\u3044\u3046\u4ed5\u7d44\u307f\u304c\u3042\u308a\u307e\u3059\u3002\u300c&&\u300d\u3067\u306f\u5de6\u8fba\u304cfalse\u306a\u3089\u53f3\u8fba\u3092\u8a55\u4fa1\u305b\u305a\u5373\u5ea7\u306bfalse\u3092\u8fd4\u3057\u307e\u3059\u3002\u300c||\u300d\u3067\u306f\u5de6\u8fba\u304ctrue\u306a\u3089\u53f3\u8fba\u3092\u8a55\u4fa1\u305b\u305a\u5373\u5ea7\u306btrue\u3092\u8fd4\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308aNullPointerException\u306e\u9632\u6b62\u3084\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6539\u5584\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u4e00\u65b9\u300c&\u300d\u300c|\u300d\u306b\u306f\u77ed\u7d61\u8a55\u4fa1\u304c\u306a\u304f\u3001\u5e38\u306b\u4e21\u8fba\u3092\u8a55\u4fa1\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#89b4fa;\">public class<\/span> <span style=\"color:#f9e2af;\">LogicalDemo<\/span> {\n    <span style=\"color:#89b4fa;\">public static void<\/span> main(String[] args) {\n        String name = <span style=\"color:#89b4fa;\">null<\/span>;\n\n        <span style=\"color:#6c7086;\">\/\/ \u77ed\u7d61\u8a55\u4fa1\u3067 NullPointerException \u3092\u9632\u3050<\/span>\n        <span style=\"color:#6c7086;\">\/\/ name == null \u2192 true \u306a\u306e\u3067\u53f3\u8fba\u306f\u8a55\u4fa1\u3055\u308c\u306a\u3044<\/span>\n        <span style=\"color:#89b4fa;\">if<\/span> (name == <span style=\"color:#89b4fa;\">null<\/span> || name.isEmpty()) {\n            System.out.println(<span style=\"color:#a6e3a1;\">\"\u540d\u524d\u304c\u672a\u5165\u529b\u3067\u3059\"<\/span>);\n        }\n\n        <span style=\"color:#6c7086;\">\/\/ &amp; \u3092\u4f7f\u3046\u3068\u4e21\u8fba\u3092\u8a55\u4fa1\u3059\u308b\u306e\u3067null\u3067NullPointerException\uff01<\/span>\n        <span style=\"color:#6c7086;\">\/\/ if (name == null | name.isEmpty()) { ... }  \/\/ \u2190 \u5371\u967a\uff01<\/span>\n\n        <span style=\"color:#6c7086;\">\/\/ &&\u306e\u77ed\u7d61\u8a55\u4fa1\uff1anull\u30c1\u30a7\u30c3\u30af\u304c\u5148\u306b\u3042\u308b\u3068\u5b89\u5168<\/span>\n        <span style=\"color:#89b4fa;\">if<\/span> (name != <span style=\"color:#89b4fa;\">null<\/span> &amp;&amp; name.length() &gt; 5) {\n            System.out.println(<span style=\"color:#a6e3a1;\">\"\u9577\u3044\u540d\u524d\u3067\u3059\"<\/span>);\n        }\n\n        <span style=\"color:#6c7086;\">\/\/ !\u6f14\u7b97\u5b50\uff08NOT\uff09\u306e\u4f7f\u3044\u65b9<\/span>\n        <span style=\"color:#cba6f7;\">boolean<\/span> isReady = <span style=\"color:#89b4fa;\">false<\/span>;\n        <span style=\"color:#89b4fa;\">if<\/span> (!isReady) {\n            System.out.println(<span style=\"color:#a6e3a1;\">\"\u6e96\u5099\u304c\u3067\u304d\u3066\u3044\u307e\u305b\u3093\"<\/span>);\n        }\n    }\n}\n<\/div>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:18px;\">&#128161;<\/span>\n    <strong style=\"color:#16a34a;font-size:15px;\">&&\u3068||\u306e\u4f7f\u3044\u5206\u3051\u306e\u30b3\u30c4<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">null\u30c1\u30a7\u30c3\u30af\u306e\u3088\u3046\u306a\u300c\u524d\u306e\u6761\u4ef6\u304cfalse\u306a\u3089\u5f8c\u308d\u3092\u8a55\u4fa1\u3057\u306a\u304f\u3066\u3044\u3044\u300d\u5834\u9762\u3067\u306f\u300c&&\u300d\u3092\u4f7f\u3044\u3001null\u30c1\u30a7\u30c3\u30af\u3092\u5148\u306b\u7f6e\u304f\u306e\u304c\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3067\u3059\u3002\u300c||\u300d\u3082\u540c\u69d8\u306b\u300c\u4e00\u65b9\u304c\u78ba\u5b9a\u3057\u305f\u3089\u6b8b\u308a\u3092\u8a55\u4fa1\u3059\u308b\u5fc5\u8981\u304c\u306a\u3044\u300d\u6761\u4ef6\u3092\u5148\u306b\u7f6e\u304d\u307e\u3057\u3087\u3046\u3002\u5358\u9805\u6f14\u7b97\u5b50\u300c!\u300d\u306f\u6761\u4ef6\u3092\u53cd\u8ee2\u3059\u308b\u3068\u304d\u306b\u4f7f\u3044\u307e\u3059\u304c\u3001\u300c!isNotEmpty()\u300d\u306e\u3088\u3046\u306a\u4e8c\u91cd\u5426\u5b9a\u306f\u53ef\u8aad\u6027\u3092\u4e0b\u3052\u308b\u305f\u3081\u3001\u300cisEmpty()\u300d\u306e\u3088\u3046\u306b\u80af\u5b9a\u5f62\u306e\u30e1\u30bd\u30c3\u30c9\u540d\u306b\u76f4\u3059\u306e\u304c\u63a8\u5968\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"g-flow-row\" style=\"margin:24px 0;\">\n  <div class=\"g-flow-item\">&amp;&amp; \u5de6\u8fba\u3092\u8a55\u4fa1<\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\">\u5de6\u8fba=false?<br>\u2192\u5373false<\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\">\u53f3\u8fba\u3092\u8a55\u4fa1<\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\">\u7d50\u679c\u3092\u8fd4\u3059<\/div>\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u77ed\u7d61\u8a55\u4fa1\u306f\u5358\u306a\u308b\u6700\u9069\u5316\u3067\u306f\u306a\u304f\u3001null\u5b89\u5168\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u305f\u3081\u306e\u5fc5\u9808\u77e5\u8b58\u3067\u3059\u3002\u300cif (obj != null && obj.method())\u300d\u3068\u3044\u3046\u66f8\u304d\u65b9\u306fJava\u306e\u5b9a\u756a\u30d1\u30bf\u30fc\u30f3\u3067\u3001\u3053\u308c\u3092\u77e5\u3089\u306a\u3044\u3068NullPointerException\u3092\u983b\u767a\u3055\u305b\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-java-operators&#038;blog_slug=cc-java-operators\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-java-operators&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-07\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">07<\/span>\n  <span class=\"section-label\" style=\"display:block;\">TERNARY OPERATOR<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u4e09\u9805\u6f14\u7b97\u5b50\u2015\u2015if-else\u306e\u77ed\u7e2e\u5f62\u3068\u8aad\u307f\u3084\u3059\u3055\u306e\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5<\/span>\n  <span class=\"section-desc\">\u4e00\u884c\u3067\u6761\u4ef6\u5206\u5c90\u3092\u66f8\u3051\u308b\u4fbf\u5229\u306a\u6f14\u7b97\u5b50\u306e\u6b63\u3057\u3044\u4f7f\u3044\u65b9<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e09\u9805\u6f14\u7b97\u5b50\uff08\u6761\u4ef6\u6f14\u7b97\u5b50\uff09\u306f\u3001<code>\u6761\u4ef6\u5f0f ? \u5024A : \u5024B<\/code>\u3068\u3044\u3046\u69cb\u6587\u3067\u3001\u6761\u4ef6\u304ctrue\u306a\u3089\u5024A\u3092\u3001false\u306a\u3089\u5024B\u3092\u8fd4\u3059\u6f14\u7b97\u5b50\u3067\u3059\u3002<code>if-else<\/code>\u6587\u3092\u30b7\u30f3\u30d7\u30eb\u306b\u4e00\u884c\u3067\u66f8\u3051\u308b\u5834\u9762\u3067\u6d3b\u8e8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/\/ if-else \u306e\u66f8\u304d\u65b9<\/span>\n<span style=\"color:#cba6f7;\">int<\/span> score = 75;\nString grade;\n<span style=\"color:#89b4fa;\">if<\/span> (score >= 60) {\n    grade = <span style=\"color:#a6e3a1;\">\"\u5408\u683c\"<\/span>;\n} <span style=\"color:#89b4fa;\">else<\/span> {\n    grade = <span style=\"color:#a6e3a1;\">\"\u4e0d\u5408\u683c\"<\/span>;\n}\n\n<span style=\"color:#6c7086;\">\/\/ \u4e09\u9805\u6f14\u7b97\u5b50\u3067\u540c\u3058\u51e6\u7406\u3092\u4e00\u884c\u3067<\/span>\nString grade2 = (score >= 60) ? <span style=\"color:#a6e3a1;\">\"\u5408\u683c\"<\/span> : <span style=\"color:#a6e3a1;\">\"\u4e0d\u5408\u683c\"<\/span>;\n\n<span style=\"color:#6c7086;\">\/\/ null \u30c1\u30a7\u30c3\u30af\u306b\u4fbf\u5229\uff08Java 8\u4ee5\u964d\u306fOptional\u63a8\u5968\u3060\u304c\uff09<\/span>\nString display = (name != <span style=\"color:#89b4fa;\">null<\/span>) ? name : <span style=\"color:#a6e3a1;\">\"\u533f\u540d\"<\/span>;\n\n<span style=\"color:#6c7086;\">\/\/ \u30cd\u30b9\u30c8\u3057\u305f\u4e09\u9805\u6f14\u7b97\u5b50\uff08\u53ef\u8aad\u6027\u304c\u4e0b\u304c\u308b\u305f\u3081\u975e\u63a8\u5968\uff09<\/span>\nString level = (score >= 90) ? <span style=\"color:#a6e3a1;\">\"\u512a\u79c0\"<\/span> : (score >= 60) ? <span style=\"color:#a6e3a1;\">\"\u5408\u683c\"<\/span> : <span style=\"color:#a6e3a1;\">\"\u4e0d\u5408\u683c\"<\/span>;\n<\/div>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:20px;\">&#9888;&#65039;<\/span>\n    <strong style=\"color:#dc2626;font-size:16px;\">\u4e09\u9805\u6f14\u7b97\u5b50\u306e\u30cd\u30b9\u30c8\u306f\u7981\u6b62<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u4e09\u9805\u6f14\u7b97\u5b50\u3092\u5165\u308c\u5b50\u306b\u3059\u308b\u3053\u3068\uff08\u30cd\u30b9\u30c8\uff09\u306f\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3092\u8457\u3057\u304f\u4e0b\u3052\u307e\u3059\u30023\u6bb5\u968e\u4ee5\u4e0a\u306e\u6761\u4ef6\u5206\u5c90\u306f\u7d20\u76f4\u306bif-else\u3092\u4f7f\u3044\u307e\u3057\u3087\u3046\u3002\u300c\u6761\u4ef6\u304c\u5358\u7d14\u30672\u629e\u306e\u3068\u304d\u300d\u306e\u307f\u4e09\u9805\u6f14\u7b97\u5b50\u3092\u4f7f\u3046\u306e\u304c\u3001\u30c1\u30fc\u30e0\u958b\u767a\u3067\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u4e09\u9805\u6f14\u7b97\u5b50\uff08Ternary Operator\uff09<\/strong>\uff1aJava\u3067\u552f\u4e00\u306e\u300c\u4e09\u9805\u6f14\u7b97\u5b50\u300d\u3002\u300ccondition ? valueIfTrue : valueIfFalse\u300d\u3068\u3044\u3046\u66f8\u5f0f\u3067\u3001condition\u304ctrue\u306a\u3089valueIfTrue\u304c\u3001false\u306a\u3089valueIfFalse\u304c\u8fd4\u3055\u308c\u307e\u3059\u3002\u5909\u6570\u306e\u521d\u671f\u5316\u3084\u5f15\u6570\u306e\u6e21\u3057\u65b9\u3092\u77ed\u304f\u66f8\u3051\u308b\u5834\u9762\u3067\u6709\u7528\u3067\u3059\u3002\u305f\u3060\u3057\u30cd\u30b9\u30c8\u3057\u3066\u591a\u7528\u3059\u308b\u3068\u53ef\u8aad\u6027\u304c\u5927\u5e45\u306b\u4e0b\u304c\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u4e09\u9805\u6f14\u7b97\u5b50\u306f\u30b7\u30f3\u30d7\u30eb\u306a2\u629e\u306e\u6761\u4ef6\u5206\u5c90\u3067\u306e\u307f\u4f7f\u3044\u307e\u3057\u3087\u3046\u3002\u300c\u6700\u59272\u6bb5\u968e\u30fb1\u884c\u3067\u53ce\u307e\u308b\u300d\u3092\u57fa\u6e96\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u30cd\u30b9\u30c8\u3057\u305f\u4e09\u9805\u6f14\u7b97\u5b50\u306e\u30b3\u30fc\u30c9\u3092\u30ec\u30d3\u30e5\u30fc\u3059\u308b\u3068\u304d\u3001\u79c1\u306f\u5fc5\u305aif-else\u306b\u66f8\u304d\u76f4\u3059\u6307\u6458\u3092\u5165\u308c\u307e\u3059\u3002\u77ed\u304f\u66f8\u3051\u308b\u3053\u3068\u3068\u3001\u8aad\u307f\u3084\u3059\u3044\u3053\u3068\u306f\u5225\u7269\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-java-operators&#038;blog_slug=cc-java-operators\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-java-operators&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-08\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">08<\/span>\n  <span class=\"section-label\" style=\"display:block;\">BITWISE & SHIFT OPERATORS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u3068\u30b7\u30d5\u30c8\u6f14\u7b97\u5b50\u2015\u2015\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u5b9f\u8df5<\/span>\n  <span class=\"section-desc\">\u4e0a\u7d1a\u8005\u5411\u3051\u306e\u6f14\u7b97\u5b50\u3002\u4f4e\u30ec\u30d9\u30eb\u64cd\u4f5c\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u3067\u6d3b\u8e8d<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u306f\u3001\u6570\u5024\u30922\u9032\u6570\u306e\u30d3\u30c3\u30c8\u5217\u3068\u3057\u3066\u6271\u3044\u3001\u30d3\u30c3\u30c8\u5358\u4f4d\u306e\u6f14\u7b97\u3092\u884c\u3046\u6f14\u7b97\u5b50\u3067\u3059\u3002\u901a\u5e38\u306eJava\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u306f\u4f7f\u7528\u983b\u5ea6\u304c\u4f4e\u3081\u3067\u3059\u304c\u3001\u30d5\u30e9\u30b0\u7ba1\u7406\u30fb\u6697\u53f7\u5316\u30fb\u7d44\u307f\u8fbc\u307f\u30b7\u30b9\u30c6\u30e0\u30fb\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306a\u3069\u306e\u5834\u9762\u3067\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u6f14\u7b97\u5b50<\/th><th>\u540d\u79f0<\/th><th>\u4f8b\uff08a=12=0b1100, b=10=0b1010\uff09<\/th><th>\u7d50\u679c\uff082\u9032\u6570\uff09<\/th><th>10\u9032\u6570<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>&amp;<\/td><td>\u30d3\u30c3\u30c8AND<\/td><td>a &amp; b<\/td><td>0b1000<\/td><td>8<\/td><\/tr>\n<tr><td>|<\/td><td>\u30d3\u30c3\u30c8OR<\/td><td>a | b<\/td><td>0b1110<\/td><td>14<\/td><\/tr>\n<tr><td>^<\/td><td>\u30d3\u30c3\u30c8XOR<\/td><td>a ^ b<\/td><td>0b0110<\/td><td>6<\/td><\/tr>\n<tr><td>~<\/td><td>\u30d3\u30c3\u30c8\u53cd\u8ee2\uff08NOT\uff09<\/td><td>~a<\/td><td>0b...10011\uff08\u7b26\u53f7\u4ed8\u304d\uff09<\/td><td>-13<\/td><\/tr>\n<tr><td>&lt;&lt;<\/td><td>\u5de6\u30b7\u30d5\u30c8<\/td><td>a &lt;&lt; 2<\/td><td>0b110000<\/td><td>48\uff08\u00d74\u500d\uff09<\/td><\/tr>\n<tr><td>&gt;&gt;<\/td><td>\u53f3\u30b7\u30d5\u30c8\uff08\u7b97\u8853\uff09<\/td><td>a &gt;&gt; 2<\/td><td>0b0011<\/td><td>3\uff08\u00f74\u500d\uff09<\/td><\/tr>\n<tr><td>&gt;&gt;&gt;<\/td><td>\u53f3\u30b7\u30d5\u30c8\uff08\u8ad6\u7406\uff09<\/td><td>a &gt;&gt;&gt; 2<\/td><td>0b0011<\/td><td>3\uff08\u7b26\u53f7\u306a\u3057\uff09<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u5de6\u30b7\u30d5\u30c8\uff08<<\uff09\u30682\u306e\u4e57\u6570\u306e\u95a2\u4fc2<\/strong>\uff1a\u300cx << n\u300d\u306fx\u3092n\u56de\u5de6\u30b7\u30d5\u30c8\u3059\u308b\u64cd\u4f5c\u3067\u3001\u300cx \u00d7 2^n\u300d\u3068\u540c\u3058\u7d50\u679c\u306b\u306a\u308a\u307e\u3059\u3002\u300c1 << 10\u300d\u306f1024\uff082\u306e10\u4e57\uff09\u3067\u3059\u3002\u639b\u3051\u7b97\u3088\u308a\u9ad8\u901f\u306b\u52d5\u4f5c\u3059\u308b\u305f\u3081\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u306a\u30b3\u30fc\u30c9\u3067\u306f2\u306e\u4e57\u6570\u3067\u306e\u4e57\u7b97\u3092\u30b7\u30d5\u30c8\u306b\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u73fe\u4ee3\u306eJIT\u30b3\u30f3\u30d1\u30a4\u30e9\u306f\u591a\u304f\u306e\u5834\u5408\u81ea\u52d5\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u3001\u53ef\u8aad\u6027\u91cd\u8996\u3067\u666e\u901a\u306b\u300c*\u300d\u3092\u4f7f\u3046\u65b9\u304c\u7121\u96e3\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#89b4fa;\">public class<\/span> <span style=\"color:#f9e2af;\">BitwiseDemo<\/span> {\n    <span style=\"color:#89b4fa;\">public static void<\/span> main(String[] args) {\n        <span style=\"color:#6c7086;\">\/\/ \u30d5\u30e9\u30b0\u7ba1\u7406\uff08\u6a29\u9650\u8a2d\u5b9a\u306a\u3069\uff09<\/span>\n        <span style=\"color:#cba6f7;\">final int<\/span> READ  = 0b001;  <span style=\"color:#6c7086;\">\/\/ 1<\/span>\n        <span style=\"color:#cba6f7;\">final int<\/span> WRITE = 0b010;  <span style=\"color:#6c7086;\">\/\/ 2<\/span>\n        <span style=\"color:#cba6f7;\">final int<\/span> EXEC  = 0b100;  <span style=\"color:#6c7086;\">\/\/ 4<\/span>\n\n        <span style=\"color:#cba6f7;\">int<\/span> permission = READ | WRITE;  <span style=\"color:#6c7086;\">\/\/ \u8aad\u307f\u53d6\u308a\uff0b\u66f8\u304d\u8fbc\u307f = 0b011 = 3<\/span>\n        System.out.println(permission);  <span style=\"color:#6c7086;\">\/\/ 3<\/span>\n\n        <span style=\"color:#6c7086;\">\/\/ \u7279\u5b9a\u306e\u30d5\u30e9\u30b0\u304c\u7acb\u3063\u3066\u3044\u308b\u304b\u78ba\u8a8d<\/span>\n        <span style=\"color:#cba6f7;\">boolean<\/span> canRead  = (permission &amp; READ)  != 0;  <span style=\"color:#6c7086;\">\/\/ true<\/span>\n        <span style=\"color:#cba6f7;\">boolean<\/span> canExec  = (permission &amp; EXEC)  != 0;  <span style=\"color:#6c7086;\">\/\/ false<\/span>\n        System.out.println(\"canRead=\" + canRead + \", canExec=\" + canExec);\n\n        <span style=\"color:#6c7086;\">\/\/ \u30b7\u30d5\u30c8\u6f14\u7b97: 2\u306e\u4e57\u6570\u3067\u306e\u4e57\u7b97\u30fb\u9664\u7b97<\/span>\n        <span style=\"color:#cba6f7;\">int<\/span> x = 5;\n        System.out.println(x &lt;&lt; 3);  <span style=\"color:#6c7086;\">\/\/ 40\uff085 \u00d7 2^3 = 5 \u00d7 8\uff09<\/span>\n        System.out.println(x &gt;&gt; 1);  <span style=\"color:#6c7086;\">\/\/ 2\uff085 \u00f7 2 = 2 \u5207\u308a\u6368\u3066\uff09<\/span>\n\n        <span style=\"color:#6c7086;\">\/\/ XOR\u3067\u5024\u3092\u4ea4\u63db\uff08\u4e2d\u9593\u5909\u6570\u4e0d\u8981\u306e\u53e4\u5178\u7684\u30c6\u30af\u30cb\u30c3\u30af\uff09<\/span>\n        <span style=\"color:#cba6f7;\">int<\/span> a = 10, b = 20;\n        a ^= b; b ^= a; a ^= b;\n        System.out.println(\"a=\" + a + \", b=\" + b);  <span style=\"color:#6c7086;\">\/\/ a=20, b=10<\/span>\n    }\n}\n<\/div>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:18px;\">&#128161;<\/span>\n    <strong style=\"color:#16a34a;font-size:15px;\">\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u306e\u5b9f\u52d9\u3067\u306e\u4f7f\u3044\u3069\u3053\u308d<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u304c\u5b9f\u52d9\u3067\u767b\u5834\u3059\u308b\u306e\u306f\u4e3b\u306b\u2460\u6a29\u9650\u30d5\u30e9\u30b0\u7ba1\u7406\uff08Linux\u7684\u306arwx\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\uff09\u2461\u30cf\u30c3\u30b7\u30e5\u8a08\u7b97\u5185\u90e8\u2462\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u30d3\u30c3\u30c8\u89e3\u6790\u2463\u5927\u91cf\u30c7\u30fc\u30bf\u306e\u9ad8\u901f\u51e6\u7406\u306e4\u5834\u9762\u3067\u3059\u3002\u901a\u5e38\u306eWeb\u30a2\u30d7\u30ea\u958b\u767a\u3067\u306f\u983b\u7e41\u306b\u306f\u4f7f\u3044\u307e\u305b\u3093\u3002\u4ed5\u7d44\u307f\u3092\u77e5\u3063\u3066\u304a\u3051\u3070\u3001\u65e2\u5b58\u30b3\u30fc\u30c9\u3092\u8aad\u3080\u969b\u306b\u56f0\u3089\u306a\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u5f0a\u793e\u3067\u306fJava\u7cfb\u306e\u30d0\u30c3\u30af\u30a8\u30f3\u30c9API\u306e\u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc\u3092\u3059\u308b\u3068\u304d\u3001\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u304c\u4f7f\u308f\u308c\u3066\u3044\u308b\u30b3\u30fc\u30c9\u3092\u898b\u304b\u3051\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u7406\u89e3\u3067\u304d\u306a\u3044\u3068\u300c\u4f55\u3092\u3084\u3063\u3066\u3044\u308b\u304b\u5206\u304b\u3089\u306a\u3044\u300d\u30b3\u30fc\u30c9\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u306e\u3067\u3001\u57fa\u672c\u7684\u306a\u8aad\u307f\u65b9\u306f\u62bc\u3055\u3048\u3066\u304a\u304d\u305f\u3044\u3068\u3053\u308d\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-java-operators&#038;blog_slug=cc-java-operators\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-java-operators&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-09\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">09<\/span>\n  <span class=\"section-label\" style=\"display:block;\">INSTANCEOF OPERATOR<\/span>\n  <span class=\"section-title\" style=\"display:block;\">instanceof\u6f14\u7b97\u5b50\u2015\u2015\u578b\u30c1\u30a7\u30c3\u30af\u3068\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u3067\u306e\u6d3b\u7528<\/span>\n  <span class=\"section-desc\">\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u5fc5\u9808\u306e\u578b\u5b89\u5168\u30c1\u30a7\u30c3\u30af<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><code>instanceof<\/code>\u6f14\u7b97\u5b50\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u6307\u5b9a\u3057\u305f\u30af\u30e9\u30b9\u3084\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u6f14\u7b97\u5b50\u3067\u3059\u3002\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\uff08\u7279\u306b\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\uff09\u3067\u4e0d\u53ef\u6b20\u306a\u30c4\u30fc\u30eb\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>instanceof\u6f14\u7b97\u5b50<\/strong>\uff1a\u300c\u30aa\u30d6\u30b8\u30a7\u30af\u30c8 instanceof \u30af\u30e9\u30b9\u540d\u300d\u3068\u3044\u3046\u66f8\u5f0f\u3067\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u6307\u5b9a\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\uff08\u307e\u305f\u306f\u305d\u306e\u30b5\u30d6\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\uff09\u3067\u3042\u308c\u3070true\u3001\u305d\u3046\u3067\u306a\u3051\u308c\u3070false\u3092\u8fd4\u3057\u307e\u3059\u3002null\u306b\u5bfe\u3057\u3066\u4f7f\u3063\u305f\u5834\u5408\u306f\u5e38\u306bfalse\u306b\u306a\u308a\u307e\u3059\u3002Java 16\u4ee5\u964d\u3067\u306f\u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u30f3\u30b0\u69cb\u6587\uff08instanceof String s\uff09\u3092\u4f7f\u3063\u3066\u30ad\u30e3\u30b9\u30c8\u3068\u78ba\u8a8d\u3092\u540c\u6642\u306b\u884c\u3048\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#89b4fa;\">public class<\/span> <span style=\"color:#f9e2af;\">InstanceofDemo<\/span> {\n    <span style=\"color:#89b4fa;\">public static void<\/span> describe(Object obj) {\n        <span style=\"color:#6c7086;\">\/\/ \u5f93\u6765\u306e instanceof + \u30ad\u30e3\u30b9\u30c8<\/span>\n        <span style=\"color:#89b4fa;\">if<\/span> (obj <span style=\"color:#89b4fa;\">instanceof<\/span> String) {\n            String s = (String) obj;  <span style=\"color:#6c7086;\">\/\/ \u578b\u78ba\u8a8d\u5f8c\u306b\u30ad\u30e3\u30b9\u30c8<\/span>\n            System.out.println(<span style=\"color:#a6e3a1;\">\"\u6587\u5b57\u5217: \u9577\u3055=\"<\/span> + s.length());\n        } <span style=\"color:#89b4fa;\">else if<\/span> (obj <span style=\"color:#89b4fa;\">instanceof<\/span> Integer) {\n            System.out.println(<span style=\"color:#a6e3a1;\">\"\u6574\u6570: \u5024=\"<\/span> + obj);\n        } <span style=\"color:#89b4fa;\">else<\/span> {\n            System.out.println(<span style=\"color:#a6e3a1;\">\"\u305d\u306e\u4ed6\u306e\u578b: \"<\/span> + obj.getClass().getSimpleName());\n        }\n    }\n\n    <span style=\"color:#6c7086;\">\/\/ Java 16\u4ee5\u964d\uff1a\u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u30f3\u30b0\uff08\u63a8\u5968\uff09<\/span>\n    <span style=\"color:#89b4fa;\">public static void<\/span> describeModern(Object obj) {\n        <span style=\"color:#89b4fa;\">if<\/span> (obj <span style=\"color:#89b4fa;\">instanceof<\/span> String s) {\n            <span style=\"color:#6c7086;\">\/\/ \u30ad\u30e3\u30b9\u30c8\u4e0d\u8981\u3067\u305d\u306e\u307e\u307es\u3068\u3057\u3066\u4f7f\u3048\u308b<\/span>\n            System.out.println(<span style=\"color:#a6e3a1;\">\"\u6587\u5b57\u5217: \u9577\u3055=\"<\/span> + s.length());\n        } <span style=\"color:#89b4fa;\">else if<\/span> (obj <span style=\"color:#89b4fa;\">instanceof<\/span> Integer i) {\n            System.out.println(<span style=\"color:#a6e3a1;\">\"\u6574\u6570: \u5024=\"<\/span> + i);\n        }\n    }\n\n    <span style=\"color:#89b4fa;\">public static void<\/span> main(String[] args) {\n        describe(<span style=\"color:#a6e3a1;\">\"Hello Java\"<\/span>);\n        describe(42);\n        describe(3.14);\n        <span style=\"color:#6c7086;\">\/\/ null \u306b\u5bfe\u3057\u3066 instanceof \u306f\u5e38\u306b false<\/span>\n        System.out.println(<span style=\"color:#89b4fa;\">null instanceof<\/span> String);  <span style=\"color:#6c7086;\">\/\/ false\uff08\u4f8b\u5916\u306a\u3057\uff09<\/span>\n    }\n}\n<\/div>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:18px;\">&#128161;<\/span>\n    <strong style=\"color:#16a34a;font-size:15px;\">instanceof \u306e\u591a\u7528\u306f\u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">instanceof\u3092\u591a\u7528\u3057\u305fif-else\u9023\u9396\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u8a2d\u8a08\u306e\u300c\u958b\u653e\/\u9589\u9396\u539f\u5247\uff08OCP\uff09\u300d\u306b\u9055\u53cd\u3059\u308b\u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3\u306b\u306a\u308a\u304c\u3061\u3067\u3059\u3002\u578b\u306b\u5fdc\u3058\u305f\u51e6\u7406\u306f\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\uff08\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\uff09\u3067\u8868\u73fe\u3067\u304d\u308b\u5834\u5408\u304c\u591a\u304f\u3001instanceof\u9023\u9396\u3088\u308a\u3082\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002\u65e2\u5b58\u30af\u30e9\u30b9\u306e\u578b\u3092\u5916\u90e8\u304b\u3089\u5224\u5225\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u3084\u3001Java 21\u306e\u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u30f3\u30b0\uff08switch\u5f0f\uff09\u3067\u306f\u6709\u52b9\u306a\u4f7f\u3044\u65b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">instanceof\u306fJava\u5165\u9580\u66f8\u3067\u306f\u3042\u307e\u308a\u53d6\u308a\u4e0a\u3052\u3089\u308c\u307e\u305b\u3093\u304c\u3001\u5b9f\u969b\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u30b3\u30fc\u30c9\u3084\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u306f\u983b\u51fa\u3057\u307e\u3059\u3002Spring\u306eBeanDefinition\u51e6\u7406\u3084Jackson\u306eJSON\u5909\u63db\u306a\u3069\u3001\u578b\u306b\u57fa\u3065\u3044\u305f\u5206\u5c90\u51e6\u7406\u3067\u4e0d\u53ef\u6b20\u3067\u3059\u3002Java 16\u4ee5\u964d\u306e\u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u30f3\u30b0\u69cb\u6587\u306f\u975e\u5e38\u306b\u4fbf\u5229\u306a\u306e\u3067\u3001\u305c\u3072\u6d3b\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-java-operators&#038;blog_slug=cc-java-operators\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-java-operators&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-10\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">10<\/span>\n  <span class=\"section-label\" style=\"display:block;\">OPERATOR PRECEDENCE<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u6f14\u7b97\u5b50\u306e\u512a\u5148\u9806\u4f4d\u2015\u2015\u62ec\u5f27\u3067\u660e\u793a\u3059\u308b\u91cd\u8981\u6027<\/span>\n  <span class=\"section-desc\">\u512a\u5148\u9806\u4f4d\u306e\u8aa4\u89e3\u304c\u30d0\u30b0\u306e\u539f\u56e0\u306b\u306a\u308b\u3002\u62ec\u5f27\u3092\u4f7f\u3063\u305f\u5b89\u5168\u306a\u66f8\u304d\u65b9\u3092\u7fd2\u5f97<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6f14\u7b97\u5b50\u306b\u306f\u300c\u512a\u5148\u9806\u4f4d\u300d\u304c\u3042\u308a\u3001\u4e00\u3064\u306e\u5f0f\u306b\u8907\u6570\u306e\u6f14\u7b97\u5b50\u304c\u542b\u307e\u308c\u308b\u5834\u5408\u3001\u512a\u5148\u9806\u4f4d\u306e\u9ad8\u3044\u6f14\u7b97\u5b50\u304b\u3089\u9806\u306b\u8a55\u4fa1\u3055\u308c\u307e\u3059\u3002\u6570\u5b66\u3068\u540c\u69d8\u306b\u300c\u639b\u3051\u7b97\u306f\u8db3\u3057\u7b97\u3088\u308a\u5148\u306b\u8a08\u7b97\u3059\u308b\u300d\u306e\u3068\u540c\u3058\u8003\u3048\u65b9\u3067\u3059\u304c\u3001Java\u3067\u306f\u6f14\u7b97\u5b50\u304c\u591a\u7a2e\u591a\u69d8\u306a\u305f\u3081\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u512a\u5148\u9806\u4f4d\uff08\u9ad8\u2192\u4f4e\uff09<\/th><th>\u6f14\u7b97\u5b50\u306e\u7a2e\u985e<\/th><th>\u6f14\u7b97\u5b50\u306e\u4f8b<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>1\u4f4d\uff08\u6700\u9ad8\uff09<\/td><td>\u5f8c\u7f6e\u6f14\u7b97\u5b50<\/td><td>x++, x--, \u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057()<\/td><\/tr>\n<tr><td>2\u4f4d<\/td><td>\u524d\u7f6e\u5358\u9805\u6f14\u7b97\u5b50<\/td><td>++x, --x, !, ~, -\uff08\u5358\u9805\uff09<\/td><\/tr>\n<tr><td>3\u4f4d<\/td><td>\u30ad\u30e3\u30b9\u30c8<\/td><td>(int) x<\/td><\/tr>\n<tr><td>4\u4f4d<\/td><td>\u4e57\u9664\u30fb\u4f59\u308a<\/td><td>*, \/, %<\/td><\/tr>\n<tr><td>5\u4f4d<\/td><td>\u52a0\u6e1b\u7b97<\/td><td>+, -<\/td><\/tr>\n<tr><td>6\u4f4d<\/td><td>\u30b7\u30d5\u30c8<\/td><td>&lt;&lt;, &gt;&gt;, &gt;&gt;&gt;<\/td><\/tr>\n<tr><td>7\u4f4d<\/td><td>\u6bd4\u8f03\u30fbinstanceof<\/td><td>&lt;, &gt;, &lt;=, &gt;=, instanceof<\/td><\/tr>\n<tr><td>8\u4f4d<\/td><td>\u7b49\u5024\u6bd4\u8f03<\/td><td>==, !=<\/td><\/tr>\n<tr><td>9\u4f4d<\/td><td>\u30d3\u30c3\u30c8AND<\/td><td>&amp;<\/td><\/tr>\n<tr><td>10\u4f4d<\/td><td>\u30d3\u30c3\u30c8XOR<\/td><td>^<\/td><\/tr>\n<tr><td>11\u4f4d<\/td><td>\u30d3\u30c3\u30c8OR<\/td><td>|<\/td><\/tr>\n<tr><td>12\u4f4d<\/td><td>\u8ad6\u7406AND<\/td><td>&amp;&amp;<\/td><\/tr>\n<tr><td>13\u4f4d<\/td><td>\u8ad6\u7406OR<\/td><td>||<\/td><\/tr>\n<tr><td>14\u4f4d<\/td><td>\u4e09\u9805\u6f14\u7b97\u5b50<\/td><td>? :<\/td><\/tr>\n<tr><td>15\u4f4d\uff08\u6700\u4f4e\uff09<\/td><td>\u4ee3\u5165\u6f14\u7b97\u5b50<\/td><td>=, +=, -= \u306a\u3069<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/\/ \u512a\u5148\u9806\u4f4d\u306b\u3088\u308b\u610f\u56f3\u3057\u306a\u3044\u52d5\u4f5c\u306e\u4f8b<\/span>\n<span style=\"color:#cba6f7;\">int<\/span> result1 = 2 + 3 * 4;    <span style=\"color:#6c7086;\">\/\/ 14\uff08*\u304c\u5148: 3*4=12, 12+2=14\uff09<\/span>\n<span style=\"color:#cba6f7;\">int<\/span> result2 = (2 + 3) * 4;  <span style=\"color:#6c7086;\">\/\/ 20\uff08\u62ec\u5f27\u3067\u610f\u56f3\u3092\u660e\u793a\uff09<\/span>\n\n<span style=\"color:#6c7086;\">\/\/ \u6bd4\u8f03\u3068\u8ad6\u7406\u306e\u512a\u5148\u9806\u4f4d<\/span>\n<span style=\"color:#cba6f7;\">boolean<\/span> b1 = 1 + 2 == 3 &amp;&amp; 4 * 5 == 20;  <span style=\"color:#6c7086;\">\/\/ true<\/span>\n<span style=\"color:#6c7086;\">\/\/ \u8a55\u4fa1\u9806: (1+2)==3 \u306f true \u2192 (4*5)==20 \u306f true \u2192 true &amp;&amp; true \u2192 true<\/span>\n\n<span style=\"color:#6c7086;\">\/\/ \u30d3\u30c3\u30c8\u6f14\u7b97\u3068\u6bd4\u8f03\u306e\u6df7\u5728\uff08\u30d0\u30b0\u306e\u6e29\u5e8a\uff09<\/span>\n<span style=\"color:#cba6f7;\">int<\/span> x = 5;\n<span style=\"color:#cba6f7;\">boolean<\/span> b2 = x &amp; 1 == 0;   <span style=\"color:#6c7086;\">\/\/ \u610f\u56f3: (x&amp;1)==0 \u3060\u304c\uff01<\/span>\n<span style=\"color:#6c7086;\">\/\/ \u5b9f\u969b: x&amp;(1==0) = x&amp;false \u2192 \u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\uff08\u578b\u4e0d\u4e00\u81f4\uff09<\/span>\n\n<span style=\"color:#6c7086;\">\/\/ \u62ec\u5f27\u3067\u660e\u793a\u3057\u3066\u5b89\u5168\u306b\u66f8\u304f<\/span>\n<span style=\"color:#cba6f7;\">boolean<\/span> b3 = (x &amp; 1) == 0;  <span style=\"color:#6c7086;\">\/\/ OK: \u5076\u6570\u30c1\u30a7\u30c3\u30af<\/span>\n<\/div>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:20px;\">&#9888;&#65039;<\/span>\n    <strong style=\"color:#dc2626;font-size:16px;\">\u512a\u5148\u9806\u4f4d\u306f\u6697\u8a18\u3088\u308a\u300c\u62ec\u5f27\u3067\u660e\u793a\u300d<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">Java\u306e\u3059\u3079\u3066\u306eoperatorPrecedence\u3092\u6697\u8a18\u3057\u3088\u3046\u3068\u3059\u308b\u306e\u306f\u975e\u52b9\u7387\u3067\u3001\u305f\u3068\u3048\u6697\u8a18\u3057\u3066\u3082\u4ed6\u306e\u4eba\u304c\u8aad\u307f\u306b\u304f\u3044\u30b3\u30fc\u30c9\u306b\u306a\u308a\u307e\u3059\u3002\u300c\u8a55\u4fa1\u9806\u306b\u81ea\u4fe1\u304c\u306a\u3044\u5834\u5408\u306f\u62ec\u5f27\u3092\u4f7f\u3046\u300d\u3068\u3044\u3046\u30b7\u30f3\u30d7\u30eb\u306a\u30eb\u30fc\u30eb\u3092\u5fb9\u5e95\u3057\u307e\u3057\u3087\u3046\u3002\u62ec\u5f27\u3092\u4f7f\u3063\u3066\u3082\u52d5\u4f5c\u306f\u5909\u308f\u308a\u307e\u305b\u3093\uff08\u5197\u9577\u306a\u62ec\u5f27\u306fOK\uff09\u304c\u3001\u30b3\u30fc\u30c9\u306e\u610f\u56f3\u304c\u660e\u78ba\u306b\u306a\u308a\u30c1\u30fc\u30e0\u306e\u4fdd\u5b88\u6027\u304c\u4e0a\u304c\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u300c(condition & flag) == 0\u300d\u3068\u66f8\u304f\u304b\u300ccondition & flag == 0\u300d\u3068\u66f8\u304f\u304b\u3067\u7d50\u679c\u304c\u5909\u308f\u308b\u3002\u3053\u3046\u3044\u3046\u6f14\u7b97\u5b50\u512a\u5148\u9806\u4f4d\u306e\u30d0\u30b0\u306f\u5b9f\u969b\u306b\u8d77\u304d\u308b\u3068\u539f\u56e0\u7a76\u660e\u306b\u304b\u306a\u308a\u306e\u6642\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u3002\u300c\u8ff7\u3063\u305f\u3089\u62ec\u5f27\u300d\u306f\u30c1\u30fc\u30e0\u958b\u767a\u3067\u306e\u30b4\u30fc\u30eb\u30c7\u30f3\u30eb\u30fc\u30eb\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u7279\u306b\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\uff08&, |, ^\uff09\u306f\u6bd4\u8f03\u6f14\u7b97\u5b50\uff08==, !=\uff09\u3088\u308a\u512a\u5148\u9806\u4f4d\u304c\u4f4e\u3044\u3001\u3068\u3044\u3046\u70b9\u306f\u591a\u304f\u306e\u4eba\u304c\u8aa4\u89e3\u3057\u307e\u3059\u3002\u300cx & 0xFF == 255\u300d\u306f\u300cx & (0xFF == 255)\u300d\u3068\u3057\u3066\u8a55\u4fa1\u3055\u308c\u307e\u3059\u3002\u30d3\u30c3\u30c8\u6f14\u7b97\u3092\u542b\u3080\u5f0f\u3067\u306f\u5fc5\u305a\u62ec\u5f27\u3092\u4f7f\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-java-operators&#038;blog_slug=cc-java-operators\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-java-operators&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-11\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">11<\/span>\n  <span class=\"section-label\" style=\"display:block;\">GENAI JAVA CASES<\/span>\n  <span class=\"section-title\" style=\"display:block;\">GENAI\u5b9f\u904b\u7528\u3067\u306eJava\u6d3b\u7528\u4e8b\u4f8b<\/span>\n  <span class=\"section-desc\">API\u9023\u643a\u30fb\u30d0\u30c3\u30c1\u51e6\u7406\u30fb\u30c7\u30fc\u30bf\u5909\u63db\u3067\u6f14\u7b97\u5b50\u304c\u3069\u3046\u4f7f\u308f\u308c\u3066\u3044\u308b\u304b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u682a\u5f0f\u4f1a\u793eGENAI\u3067\u306f\u3001Java\u3092\u4f7f\u3063\u305f\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u3084\u9023\u643aAPI\u3092\u8907\u6570\u904b\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u5b9f\u969b\u306e\u30b3\u30fc\u30c9\u3067\u6f14\u7b97\u5b50\u304c\u3069\u306e\u3088\u3046\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u304b\u3001\u5178\u578b\u7684\u306a\u30d1\u30bf\u30fc\u30f3\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">11-1. API\u30ec\u30b9\u30dd\u30f3\u30b9\u51e6\u7406\u3067\u306e\u6bd4\u8f03\u30fb\u8ad6\u7406\u6f14\u7b97\u5b50<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5916\u90e8API\u304b\u3089\u53d6\u5f97\u3057\u305f\u30c7\u30fc\u30bf\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u6bd4\u8f03\u6f14\u7b97\u5b50\u3068\u8ad6\u7406\u6f14\u7b97\u5b50\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u983b\u7e41\u306b\u767b\u5834\u3057\u307e\u3059\u3002\u7279\u306b<strong>\u77ed\u7d61\u8a55\u4fa1\u3092\u6d3b\u304b\u3057\u305fnull\u30ac\u30fc\u30c9<\/strong>\u306f\u5b9f\u52d9\u3067\u306e\u5fc5\u9808\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/\/ API\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\uff08\u5b9f\u52d9\u30d1\u30bf\u30fc\u30f3\uff09<\/span>\n<span style=\"color:#89b4fa;\">public boolean<\/span> isValidResponse(ApiResponse response) {\n    <span style=\"color:#6c7086;\">\/\/ null\u30c1\u30a7\u30c3\u30af\u3092\u5148\u306b\u7f6e\u3044\u3066\u77ed\u7d61\u8a55\u4fa1\u3067NPE\u3092\u9632\u3050<\/span>\n    <span style=\"color:#89b4fa;\">return<\/span> response != <span style=\"color:#89b4fa;\">null<\/span>\n        &amp;&amp; response.getStatusCode() == 200\n        &amp;&amp; response.getData() != <span style=\"color:#89b4fa;\">null<\/span>\n        &amp;&amp; !response.getData().isEmpty();\n}\n\n<span style=\"color:#6c7086;\">\/\/ \u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u306e\u6761\u4ef6\u5206\u5c90<\/span>\n<span style=\"color:#89b4fa;\">public<\/span> String getCustomerTier(Customer customer) {\n    <span style=\"color:#cba6f7;\">long<\/span> totalPurchase = customer.getTotalPurchaseAmount();\n    <span style=\"color:#89b4fa;\">return<\/span> totalPurchase >= 1_000_000L ? <span style=\"color:#a6e3a1;\">\"\u30d7\u30e9\u30c1\u30ca\"<\/span>\n         : totalPurchase >= 500_000L ? <span style=\"color:#a6e3a1;\">\"\u30b4\u30fc\u30eb\u30c9\"<\/span>\n         : totalPurchase >= 100_000L ? <span style=\"color:#a6e3a1;\">\"\u30b7\u30eb\u30d0\u30fc\"<\/span>\n         : <span style=\"color:#a6e3a1;\">\"\u30b9\u30bf\u30f3\u30c0\u30fc\u30c9\"<\/span>;\n}\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">11-2. \u30d0\u30c3\u30c1\u51e6\u7406\u3067\u306e\u7b97\u8853\u30fb\u5270\u4f59\u6f14\u7b97\u5b50<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5927\u91cf\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u30d0\u30c3\u30c1\u3067\u306f\u3001\u7b97\u8853\u6f14\u7b97\u5b50\u3068\u5270\u4f59\u6f14\u7b97\u5b50\u3067\u30c1\u30e3\u30f3\u30af\u5206\u5272\u30fb\u9032\u6357\u7ba1\u7406\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/\/ 10,000\u4ef6\u306e\u30c7\u30fc\u30bf\u3092100\u4ef6\u305a\u3064\u30c1\u30e3\u30f3\u30af\u51e6\u7406<\/span>\nList&lt;Customer&gt; customers = fetchAllCustomers();\n<span style=\"color:#cba6f7;\">int<\/span> chunkSize = 100;\n<span style=\"color:#cba6f7;\">int<\/span> total = customers.size();\n\n<span style=\"color:#89b4fa;\">for<\/span> (<span style=\"color:#cba6f7;\">int<\/span> i = 0; i &lt; total; i += chunkSize) {\n    <span style=\"color:#cba6f7;\">int<\/span> end = Math.min(i + chunkSize, total);  <span style=\"color:#6c7086;\">\/\/ \u672b\u5c3e\u30c1\u30e3\u30f3\u30af\u306e\u5883\u754c<\/span>\n    List&lt;Customer&gt; chunk = customers.subList(i, end);\n    processChunk(chunk);\n\n    <span style=\"color:#6c7086;\">\/\/ 1,000\u4ef6\u3054\u3068\u306b\u30ed\u30b0\u51fa\u529b\uff08\u5270\u4f59\u6f14\u7b97\u5b50\uff09<\/span>\n    <span style=\"color:#89b4fa;\">if<\/span> (i % 1000 == 0 &amp;&amp; i &gt; 0) {\n        log.info(<span style=\"color:#a6e3a1;\">\"{}\/{} \u4ef6\u51e6\u7406\u5b8c\u4e86\"<\/span>, i, total);\n    }\n}\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">11-3. \u6a29\u9650\u7ba1\u7406\u3067\u306e\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e6\u30fc\u30b6\u30fc\u6a29\u9650\u306e\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u3092\u4f7f\u3063\u3066\u8907\u6570\u306e\u6a29\u9650\u3092\u4e00\u3064\u306eint\u5024\u3067\u30b3\u30f3\u30d1\u30af\u30c8\u306b\u7ba1\u7406\u3059\u308b\u30d1\u30bf\u30fc\u30f3\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/\/ \u6a29\u9650\u30d3\u30c3\u30c8\u30d5\u30e9\u30b0\u306e\u5b9a\u7fa9<\/span>\n<span style=\"color:#89b4fa;\">public class<\/span> <span style=\"color:#f9e2af;\">Permission<\/span> {\n    <span style=\"color:#89b4fa;\">public static final int<\/span> NONE  = 0b00000;  <span style=\"color:#6c7086;\">\/\/ 0<\/span>\n    <span style=\"color:#89b4fa;\">public static final int<\/span> READ  = 0b00001;  <span style=\"color:#6c7086;\">\/\/ 1<\/span>\n    <span style=\"color:#89b4fa;\">public static final int<\/span> WRITE = 0b00010;  <span style=\"color:#6c7086;\">\/\/ 2<\/span>\n    <span style=\"color:#89b4fa;\">public static final int<\/span> DELETE= 0b00100;  <span style=\"color:#6c7086;\">\/\/ 4<\/span>\n    <span style=\"color:#89b4fa;\">public static final int<\/span> ADMIN = 0b01000;  <span style=\"color:#6c7086;\">\/\/ 8<\/span>\n\n    <span style=\"color:#89b4fa;\">public static boolean<\/span> has(<span style=\"color:#cba6f7;\">int<\/span> userPerm, <span style=\"color:#cba6f7;\">int<\/span> required) {\n        <span style=\"color:#89b4fa;\">return<\/span> (userPerm &amp; required) != 0;\n    }\n}\n\n<span style=\"color:#6c7086;\">\/\/ \u4f7f\u7528\u4f8b<\/span>\n<span style=\"color:#cba6f7;\">int<\/span> userPerm = Permission.READ | Permission.WRITE;  <span style=\"color:#6c7086;\">\/\/ 3<\/span>\nSystem.out.println(Permission.has(userPerm, Permission.READ));    <span style=\"color:#6c7086;\">\/\/ true<\/span>\nSystem.out.println(Permission.has(userPerm, Permission.DELETE));  <span style=\"color:#6c7086;\">\/\/ false<\/span>\n<\/div>\n\n\n\n<div class=\"g-flow-row\" style=\"margin:24px 0;\">\n  <div class=\"g-flow-item\">\u6a29\u9650\u30d3\u30c3\u30c8\u5b9a\u7fa9<br>\uff08\u5b9a\u6570\uff09<\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\">OR\u6f14\u7b97\u3067<br>\u6a29\u9650\u3092\u7d50\u5408<\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\">AND\u6f14\u7b97\u3067<br>\u6a29\u9650\u3092\u78ba\u8a8d<\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\">\u30b5\u30fc\u30d3\u30b9\u5c64\u3067<br>\u5236\u5fa1<\/div>\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u5f0a\u793e\u306e\u9867\u5ba2\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u3053\u306e\u30d3\u30c3\u30c8\u30d5\u30e9\u30b0\u306b\u3088\u308b\u6a29\u9650\u7ba1\u7406\u30d1\u30bf\u30fc\u30f3\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u4ee3\u7406\u5e97\u30fb\u62c5\u5f53\u8005\u30fb\u7ba1\u7406\u8005\u306e\u6a29\u9650\u30921\u3064\u306eint\u3067\u7ba1\u7406\u3067\u304d\u308b\u305f\u3081\u3001DB\u306e\u30ab\u30e9\u30e0\u6570\u304c\u6e1b\u308a\u30af\u30a8\u30ea\u3082\u30b7\u30f3\u30d7\u30eb\u306b\u306a\u308a\u307e\u3059\u3002\u73fe\u4ee3\u3067\u306f\u300cEnumSet\u300d\u3092\u4f7f\u3046\u65b9\u304cJava\u7684\u3067\u3059\u304c\u3001\u5916\u90e8\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u9023\u643a\u3067\u306fint\u30d5\u30e9\u30b0\u304c\u4fbf\u5229\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-java-operators&#038;blog_slug=cc-java-operators\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-java-operators&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-12\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">12<\/span>\n  <span class=\"section-label\" style=\"display:block;\">CLAUDE CODE \u00d7 JAVA<\/span>\n  <span class=\"section-title\" style=\"display:block;\">Claude Code\u306bJava\u30b3\u30fc\u30c9\u3092\u66f8\u304b\u305b\u308b\u65b9\u6cd5<\/span>\n  <span class=\"section-desc\">AI\u3092\u6d3b\u7528\u3057\u3066Java\u306e\u6f14\u7b97\u5b50\u30b3\u30fc\u30c9\u3092\u7d20\u65e9\u304f\u751f\u6210\u30fb\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u30fb\u5b66\u7fd2\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u307e\u3067Java\u306e\u6f14\u7b97\u5b50\u3092\u4f53\u7cfb\u7684\u306b\u89e3\u8aac\u3057\u3066\u304d\u307e\u3057\u305f\u304c\u3001\u300c\u899a\u3048\u305f\u30fb\u5206\u304b\u3063\u305f\u300d\u3068\u300c\u5b9f\u969b\u306b\u66f8\u3051\u308b\u30fb\u4f7f\u3048\u308b\u300d\u306e\u9593\u306b\u306f\u8ddd\u96e2\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u8ddd\u96e2\u3092\u77ed\u7e2e\u3059\u308b\u6700\u3082\u52b9\u7387\u7684\u306a\u624b\u6bb5\u304c\u3001<strong>Claude Code<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Claude Code\u306f\u30a2\u30f3\u30bd\u30ed\u30d4\u30c3\u30af\uff08Anthropic\uff09\u304c\u958b\u767a\u3057\u305fAI\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u3067\u3001\u30bf\u30fc\u30df\u30ca\u30eb\u304b\u3089\u81ea\u7136\u8a00\u8a9e\u3067Java\u30b3\u30fc\u30c9\u306e\u751f\u6210\u30fb\u89e3\u8aac\u30fb\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u30fb\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u4f5c\u6210\u307e\u3067\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002\u6f14\u7b97\u5b50\u306e\u4f7f\u3044\u65b9\u3092\u5b66\u7fd2\u3057\u306a\u304c\u3089\u30b3\u30fc\u30c9\u306b\u843d\u3068\u3057\u8fbc\u3080\u4f5c\u696d\u304c\u3001\u5f93\u6765\u306e1\/5\u7a0b\u5ea6\u306e\u6642\u9593\u3067\u5b8c\u4e86\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">12-1. Claude Code\u3067\u6f14\u7b97\u5b50\u30b3\u30fc\u30c9\u3092\u751f\u6210\u3059\u308b\u30d7\u30ed\u30f3\u30d7\u30c8\u4f8b<\/h3>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\"># \u6f14\u7b97\u5b50\u306e\u5b66\u7fd2\u30b5\u30f3\u30d7\u30eb\u3092\u751f\u6210<\/span>\nclaude -p \"Java\u306e\u524d\u7f6e\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u3068\u5f8c\u7f6e\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u306e\u9055\u3044\u3092\u3001\n\u5177\u4f53\u7684\u306a\u6570\u5024\u3067\u52d5\u4f5c\u304c\u5206\u304b\u308b\u6700\u5c0f\u9650\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u793a\u3057\u3066\u304f\u3060\u3055\u3044\u3002\n\u30b3\u30e1\u30f3\u30c8\u3067\u5404\u30b9\u30c6\u30c3\u30d7\u306e\u5909\u6570\u306e\u5024\u3092\u66f8\u3044\u3066\u304f\u3060\u3055\u3044\u3002\"\n\n<span style=\"color:#6c7086;\"># \u65e2\u5b58\u30b3\u30fc\u30c9\u306e\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0<\/span>\nclaude -p \"\u4ee5\u4e0b\u306eJava\u30b3\u30fc\u30c9\u3067\u8907\u6570\u306eif-else\u3092\u4f7f\u3063\u305f\u6761\u4ef6\u5206\u5c90\u3092\n\u4e09\u9805\u6f14\u7b97\u5b50\u306b\u66f8\u304d\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u3002\u305f\u3060\u3057\u53ef\u8aad\u6027\u3092\u4fdd\u3066\u308b\u5834\u5408\u306e\u307f:\n[\u30b3\u30fc\u30c9\u3092\u3053\u3053\u306b\u8cbc\u308a\u4ed8\u3051]\"\n\n<span style=\"color:#6c7086;\"># \u6f14\u7b97\u5b50\u512a\u5148\u9806\u4f4d\u306e\u30d0\u30b0\u8abf\u67fb<\/span>\nclaude -p \"\u4ee5\u4e0b\u306eJava\u30b3\u30fc\u30c9\u3067\u610f\u56f3\u3057\u305f\u52d5\u4f5c\u306b\u306a\u3089\u306a\u3044\u539f\u56e0\u3092\n\u6f14\u7b97\u5b50\u306e\u512a\u5148\u9806\u4f4d\u306e\u89b3\u70b9\u304b\u3089\u8aac\u660e\u3057\u3001\u4fee\u6b63\u30b3\u30fc\u30c9\u3092\u793a\u3057\u3066\u304f\u3060\u3055\u3044:\nboolean result = x &amp; 0xFF == 0; \/\/ x\u306f\u6574\u6570\"\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">12-2. Claude Code\u3067\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u3092\u81ea\u52d5\u751f\u6210\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6f14\u7b97\u5b50\u3092\u4f7f\u3063\u305f\u30ed\u30b8\u30c3\u30af\u306e\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u3092\u624b\u66f8\u304d\u3059\u308b\u306e\u306f\u6642\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u3002Claude Code\u306b\u4efb\u305b\u308b\u3053\u3068\u3067\u3001<strong>JUnit5\u306e\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u3092\u6570\u79d2\u3067\u751f\u6210<\/strong>\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\"># \u6f14\u7b97\u5b50\u30ed\u30b8\u30c3\u30af\u306e\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u751f\u6210<\/span>\nclaude -p \"\u4ee5\u4e0b\u306eJava\u30e1\u30bd\u30c3\u30c9\u306b\u5bfe\u3059\u308bJUnit5\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u3092\u4f5c\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u3002\n\u6f14\u7b97\u5b50\u306e\u5883\u754c\u5024\uff080, \u8ca0\u6570, \u6700\u5927\u5024\u4ed8\u8fd1\uff09\u3092\u542b\u3080\u7db2\u7f85\u7684\u306a\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u306b\u3057\u3066\u304f\u3060\u3055\u3044:\n\npublic int clamp(int value, int min, int max) {\n    return Math.max(min, Math.min(value, max));\n}\"\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">12-3. GENAI\u793e\u54e1\u304cClaude Code\u3067\u5b9f\u8df5\u3059\u308bJava\u958b\u767a\u30ef\u30fc\u30af\u30d5\u30ed\u30fc<\/h3>\n\n\n\n<div class=\"g-flow-row\" style=\"margin:24px 0;\">\n  <div class=\"g-flow-item\">\u8981\u4ef6\u30fb\u4ed5\u69d8\u3092<br>\u81ea\u7136\u8a00\u8a9e\u3067\u5165\u529b<\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\">Claude Code\u304c<br>\u30b3\u30fc\u30c9\u3092\u751f\u6210<\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\">\u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc<br>\uff0b\u30c6\u30b9\u30c8\u5b9f\u884c<\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\">\u4fee\u6b63\u6307\u793a\u3092<br>\u8ffd\u52a0\u5165\u529b<\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\">\u672c\u756a\u30c7\u30d7\u30ed\u30a4<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f0a\u793e\u3067\u306f\u4ee5\u4e0b\u306e\u30d5\u30ed\u30fc\u3067Java\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e\u958b\u767a\u901f\u5ea6\u3092\u5411\u4e0a\u3055\u305b\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fafafa;border-radius:8px;padding:16px 20px;margin:16px 0;border-left:4px solid #dc2626;\">\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u8981\u4ef6\u5b9a\u7fa9\uff1a<\/strong>\u300c\u9867\u5ba2\u30e9\u30f3\u30af\u3092\u8cfc\u5165\u91d1\u984d\u3067\u5224\u5b9a\u3057\u3001\u4e09\u9805\u6f14\u7b97\u5b50\u3092\u4f7f\u3063\u3066\u5206\u985e\u3059\u308b\u95a2\u6570\u3092\u66f8\u3044\u3066\u300d\u3068\u6307\u793a<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u30b3\u30fc\u30c9\u751f\u6210\uff1a<\/strong>Claude Code\u304c\u6f14\u7b97\u5b50\u3092\u6b63\u3057\u304f\u4f7f\u3063\u305fJava\u30b3\u30fc\u30c9\u3092\u5373\u5ea7\u306b\u51fa\u529b<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u6f14\u7b97\u5b50\u306e\u8aac\u660e\uff1a<\/strong>\u300c\u3053\u306e\u30b3\u30fc\u30c9\u3067\u4f7f\u308f\u308c\u3066\u3044\u308b\u6f14\u7b97\u5b50\u3092\u521d\u5fc3\u8005\u5411\u3051\u306b\u8aac\u660e\u3057\u3066\u300d\u3067\u5b66\u7fd2\u3082\u540c\u6642\u9032\u884c<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\uff1a<\/strong>\u300c\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u3092\u4f7f\u3063\u3066\u30d5\u30e9\u30b0\u7ba1\u7406\u306e\u30b3\u30fc\u30c9\u3092\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u3057\u3066\u300d\u3068\u6307\u793a<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u30c6\u30b9\u30c8\u751f\u6210\uff1a<\/strong>\u300c\u3053\u306e\u6f14\u7b97\u5b50\u30ed\u30b8\u30c3\u30af\u306eJUnit5\u30c6\u30b9\u30c8\u3092\u4f5c\u3063\u3066\u3001\u5883\u754c\u5024\u3082\u542b\u3081\u3066\u300d\u3067\u54c1\u8cea\u4fdd\u8a3c<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u30d0\u30b0\u8abf\u67fb\uff1a<\/strong>\u300c\u3053\u306e\u6f14\u7b97\u5b50\u5f0f\u304c\u671f\u5f85\u901a\u308a\u306b\u52d5\u304b\u306a\u3044\u7406\u7531\u3092\u8abf\u3079\u3066\u300d\u3067\u30c7\u30d0\u30c3\u30b0\u652f\u63f4<\/span><\/div>\n\n<\/div>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\">\n    <span style=\"font-size:18px;\">&#128161;<\/span>\n    <strong style=\"color:#16a34a;font-size:15px;\">Claude Code\u3067\u6f14\u7b97\u5b50\u3092\u5b66\u3076\u6700\u901f\u30eb\u30fc\u30c8<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">Claude Code\u306b\u300cJava\u306e\u524d\u7f6e\u30fb\u5f8c\u7f6e\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u306e\u9055\u3044\u3092\u5b9f\u884c\u53ef\u80fd\u306a\u30b5\u30f3\u30d7\u30eb\u3067\u793a\u3057\u3066\u300d\u3068\u805e\u304f\u3068\u3001\u30b3\u30fc\u30c9\u3068\u8aac\u660e\u3092\u540c\u6642\u306b\u53d7\u3051\u53d6\u308c\u307e\u3059\u3002\u300c\u81ea\u5206\u3067\u624b\u3092\u52d5\u304b\u3059 \u2192 \u5206\u304b\u3089\u306a\u3044\u90e8\u5206\u3092Claude Code\u306b\u8cea\u554f \u2192 \u7406\u89e3\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306e\u30b3\u30fc\u30c9\u3092\u751f\u6210\u3055\u305b\u308b\u300d\u3068\u3044\u3046\u30b5\u30a4\u30af\u30eb\u304c\u6700\u3082\u7fd2\u5f97\u304c\u901f\u3044\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u5f0a\u793e\u306eJava\u7d4c\u9a13\u306e\u6d45\u3044\u30e1\u30f3\u30d0\u30fc\u304c\u3001Claude Code\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u6f14\u7b97\u5b50\u306e\u512a\u5148\u9806\u4f4d\u30d0\u30b0\u3092\u81ea\u529b\u3067\u30c7\u30d0\u30c3\u30b0\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u307e\u3067\u306e\u6642\u9593\u304c\u3001\u5f93\u6765\u6bd4\u3067\u7d0470%\u77ed\u7e2e\u3055\u308c\u307e\u3057\u305f\u3002\u300c\u30c4\u30fc\u30eb\u306b\u983c\u308b\u300d\u306e\u3067\u306f\u306a\u304f\u300c\u30c4\u30fc\u30eb\u3067\u5b66\u7fd2\u3092\u52a0\u901f\u3055\u305b\u308b\u300d\u3068\u3044\u3046\u4f7f\u3044\u65b9\u304c\u91cd\u8981\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">Claude Code\u3067\u751f\u6210\u3057\u305fJava\u30b3\u30fc\u30c9\u306f\u5fc5\u305a\u30ec\u30d3\u30e5\u30fc\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u6f14\u7b97\u5b50\u306e\u7d30\u304b\u3044\u52d5\u4f5c\uff08\u7279\u306b\u77ed\u7d61\u8a55\u4fa1\u3084\u30d3\u30c3\u30c8\u6f14\u7b97\uff09\u3067AI\u304c\u610f\u56f3\u3068\u7570\u306a\u308b\u30b3\u30fc\u30c9\u3092\u751f\u6210\u3059\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u300c\u751f\u6210\u3057\u305f\u30b3\u30fc\u30c9\u306e\u6f14\u7b97\u5b50\u306e\u52d5\u4f5c\u3092\u78ba\u8a8d\u3059\u308b\u30c6\u30b9\u30c8\u3092\u66f8\u3044\u3066\u300d\u3068\u8ffd\u52a0\u6307\u793a\u3059\u308b\u3053\u3068\u3067\u3001\u54c1\u8cea\u3092\u62c5\u4fdd\u3067\u304d\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Java\u306e\u6f14\u7b97\u5b50\u306f\u3059\u3079\u3066\u306e\u696d\u52d9\u30ed\u30b8\u30c3\u30af\u306e\u57fa\u790e\u3067\u3059\u3002Claude Code\u3092\u6d3b\u7528\u3057\u3066\u6f14\u7b97\u5b50\u306e\u7406\u89e3\u3092\u6df1\u3081\u306a\u304c\u3089\u3001\u5b9f\u52d9\u3067\u52d5\u304fJava\u30b3\u30fc\u30c9\u3092\u6700\u77ed\u3067\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u3087\u3046\u3002AI\u9b3c\u7ba1\u7406\u3067\u306f\u3001Claude Code\u3092\u4f7f\u3063\u305f\u696d\u52d9\u81ea\u52d5\u5316\u30fbJava\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u958b\u767a\u652f\u63f4\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);border-radius:16px;padding:36px 32px;margin:48px 0 16px;color:#fff;\">\n  <p style=\"font-size:13px;font-weight:700;color:#dc2626;letter-spacing:2px;margin:0 0 12px;\">NEXT STEP<\/p>\n  <p style=\"font-size:22px;font-weight:800;line-height:1.5;margin:0 0 20px;\">\u3053\u306e\u8a18\u4e8b\u306e\u5185\u5bb9\u3092\u3001\u3042\u306a\u305f\u306e\u30d3\u30b8\u30cd\u30b9\u3067<br>\u5b9f\u8df5\u3057\u3066\u307f\u307e\u305b\u3093\u304b\uff1f<\/p>\n  <div style=\"background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);border-radius:12px;padding:24px;max-width:560px;margin:0 auto;\">\n    <p style=\"font-size:13px;color:#dc2626;font-weight:700;margin:0 0 8px;\">AI\u6d3b\u7528\u3092\u81ea\u793e\u3067\u56de\u305b\u308b\u3088\u3046\u306b\u306a\u308a\u305f\u3044\u65b9\u3078<\/p>\n    <p style=\"font-size:20px;font-weight:800;margin:0 0 12px;\">AI\u9b3c\u7ba1\u7406<\/p>\n    <p style=\"font-size:14px;color:rgba(255,255,255,0.75);margin:0 0 20px;line-height:1.7;\">Claude Code\u30fbCowork\u5c0e\u5165\u652f\u63f4\u304b\u3089\u696d\u52d9\u8a2d\u8a08\u30fb\u793e\u5185\u6d78\u900f\u307e\u3067\u5b9f\u8df5\u30d9\u30fc\u30b9\u3067\u4f34\u8d70\u3002\u300c\u81ea\u793e\u3067\u56de\u305b\u308b\u7d44\u7e54\u300d\u309290\u65e5\u3067\u4f5c\u308b\u7d4c\u55b6\u8005\u5411\u3051\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3002<\/p>\n    <div style=\"text-align:center;\">\n      <a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&utm_medium=article&utm_campaign=cc-java-operators&utm_content=next-step-cta\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-block;background:#dc2626;color:#fff;font-weight:700;font-size:15px;padding:14px 32px;border-radius:30px;text-decoration:none;\">AI\u9b3c\u7ba1\u7406\u3092\u8a73\u3057\u304f\u898b\u308b \u2192<\/a>\n    <\/div>\n  <\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Q. Java\u306e\u300c==\u300d\u3067\u6587\u5b57\u5217\u3092\u6bd4\u8f03\u3059\u308b\u3068\u306a\u305cfalse\u306b\u306a\u308b\u306e\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. Java\u3067\u306f\u300c==\u300d\u6f14\u7b97\u5b50\u304c\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u578b\uff08String\u306a\u3069\u306fObject\uff09\u306e\u5834\u5408\u3001\u5024\u306e\u5185\u5bb9\u3067\u306f\u306a\u304f\u300c\u53c2\u7167\uff08\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9\uff09\u300d\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002\u540c\u3058\u6587\u5b57\u5217\u3067\u3082\u300cnew String(\"abc\")\u300d\u3067\u4f5c\u6210\u3057\u305f\u5834\u5408\u306f\u5225\u3005\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u751f\u6210\u3055\u308c\u308b\u305f\u3081\u3001\u53c2\u7167\u5148\u304c\u7570\u306a\u308a\u300c==\u300d\u3067\u306ffalse\u306b\u306a\u308a\u307e\u3059\u3002\u6587\u5b57\u5217\u306e\u5185\u5bb9\u3092\u6bd4\u8f03\u3059\u308b\u306b\u306f\u5fc5\u305a\u300c.equals()\u300d\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u300c\"abc\".equals(str)\u300d\u3068\u3044\u3046\u66f8\u304d\u65b9\uff08\u5b9a\u6570\u30ea\u30c6\u30e9\u30eb\u3092\u5148\u306b\u7f6e\u304f\uff09\u306f\u3001str\u304cnull\u3067\u3082NullPointerException\u304c\u767a\u751f\u3057\u306a\u3044\u305f\u3081\u5b89\u5168\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. \u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u6f14\u7b97\u5b50\u306e\u524d\u7f6e\uff08++x\uff09\u3068\u5f8c\u7f6e\uff08x++\uff09\u306f\u3069\u3061\u3089\u3092\u4f7f\u3048\u3070\u3088\u3044\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. for\u30eb\u30fc\u30d7\u306e\u30ab\u30a6\u30f3\u30bf\u5909\u6570\u5358\u72ec\u3067\u306e\u4f7f\u7528\uff08\u300ci++\u300d\u307e\u305f\u306f\u300c++i\u300d\u306e\u307f\u306e\u6587\uff09\u3067\u306f\u3001\u3069\u3061\u3089\u3067\u3082\u540c\u3058\u52d5\u4f5c\u3067\u3059\u3002\u3057\u304b\u3057\u300cy = ++x\u300d\uff08\u524d\u7f6e\uff09\u3068\u300cy = x++\u300d\uff08\u5f8c\u7f6e\uff09\u3067\u306f\u5f0f\u306e\u8a55\u4fa1\u30bf\u30a4\u30df\u30f3\u30b0\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u524d\u7f6e\u306f\u300c\u5148\u306bx\u3092\u5897\u3084\u3057\u3066\u304b\u3089y\u306b\u4ee3\u5165\u300d\u3001\u5f8c\u7f6e\u306f\u300cy\u306b\u73fe\u5728\u306ex\u3092\u4ee3\u5165\u3057\u3066\u304b\u3089x\u3092\u5897\u3084\u3059\u300d\u3067\u3059\u3002\u4ee3\u5165\u3084\u4ed6\u306e\u6f14\u7b97\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u5834\u5408\u306f\u524d\u7f6e\u30fb\u5f8c\u7f6e\u306e\u9055\u3044\u306b\u6ce8\u610f\u3057\u3001\u8907\u96d1\u306a\u5f0f\u3067\u306e\u4f7f\u7528\u306f\u907f\u3051\u3066\u5225\u3005\u306e\u884c\u306b\u5206\u3051\u308b\u306e\u304c\u5b89\u5168\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. \u300c&&\u300d\u3068\u300c&\u300d\u306e\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u300c&&\u300d\uff08\u8ad6\u7406AND\uff09\u306f\u300c\u77ed\u7d61\u8a55\u4fa1\uff08\u30b7\u30e7\u30fc\u30c8\u30b5\u30fc\u30ad\u30c3\u30c8\u8a55\u4fa1\uff09\u300d\u3092\u884c\u3044\u307e\u3059\u3002\u5de6\u8fba\u304cfalse\u306e\u5834\u5408\u3001\u53f3\u8fba\u306f\u8a55\u4fa1\u3055\u308c\u307e\u305b\u3093\u3002\u300c&\u300d\uff08\u30d3\u30c3\u30c8AND\uff09\u306f\u5e38\u306b\u4e21\u8fba\u3092\u8a55\u4fa1\u3057\u3066\u304b\u3089AND\u6f14\u7b97\u3057\u307e\u3059\u3002\u5b9f\u52d9\u3067\u306f\u300c&&\u300d\u3092\u4f7f\u3046\u306e\u304c\u4e00\u822c\u7684\u3067\u3001\u7279\u306bnull\u30c1\u30a7\u30c3\u30af\u3092\u5de6\u8fba\u306b\u7f6e\u304f\u3053\u3068\u3067NullPointerException\u3092\u9632\u6b62\u3067\u304d\u307e\u3059\u3002\u300c&\u300d\u306f\u30d3\u30c3\u30c8\u6f14\u7b97\uff08\u6a29\u9650\u30d5\u30e9\u30b0\u306a\u3069\uff09\u3084\u3001\u526f\u4f5c\u7528\u306e\u3042\u308b\u5f0f\u3092\u4e21\u8fba\u5fc5\u305a\u8a55\u4fa1\u3057\u305f\u3044\u7279\u6b8a\u306a\u30b1\u30fc\u30b9\u3067\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. \u4e09\u9805\u6f14\u7b97\u5b50\uff08? :\uff09\u306f\u3069\u306e\u3088\u3046\u306a\u5834\u9762\u3067\u4f7f\u3046\u3079\u304d\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u4e09\u9805\u6f14\u7b97\u5b50\u306f\u300c\u30b7\u30f3\u30d7\u30eb\u306a2\u629e\u306e\u6761\u4ef6\u30671\u884c\u306b\u53ce\u307e\u308b\u5834\u5408\u300d\u306b\u9650\u5b9a\u3057\u3066\u4f7f\u3046\u306e\u304c\u63a8\u5968\u3067\u3059\u3002\u5177\u4f53\u4f8b\uff1a\u300cString label = (count > 0) ? count + \"\u4ef6\" : \"\u306a\u3057\";\u300d\u306e\u3088\u3046\u306a\u5909\u6570\u306e\u521d\u671f\u5316\u30023\u6bb5\u968e\u4ee5\u4e0a\u306e\u6761\u4ef6\u5206\u5c90\u3084\u30cd\u30b9\u30c8\uff08\u4e09\u9805\u6f14\u7b97\u5b50\u306e\u4e2d\u306b\u3055\u3089\u306b\u4e09\u9805\u6f14\u7b97\u5b50\uff09\u306f\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3092\u5927\u304d\u304f\u4e0b\u3052\u308b\u305f\u3081\u3001\u7d20\u76f4\u306bif-else\u6587\u3092\u4f7f\u3044\u307e\u3057\u3087\u3046\u3002\u30c1\u30fc\u30e0\u958b\u767a\u3067\u306f\u300c1\u884c\u30fb2\u629e\u30fb\u526f\u4f5c\u7528\u306a\u3057\u300d\u3092\u4e09\u9805\u6f14\u7b97\u5b50\u306e\u9069\u7528\u57fa\u6e96\u306b\u3059\u308b\u306e\u304c\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. instanceof\u6f14\u7b97\u5b50\u306e\u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u30f3\u30b0\u3068\u306f\u3069\u3046\u3044\u3046\u6a5f\u80fd\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. Java 16\u304b\u3089\u6b63\u5f0f\u5c0e\u5165\u3055\u308c\u305f\u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u30f3\u30b0\u306f\u3001\u300cif (obj instanceof String s)\u300d\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3067\u3001\u578b\u78ba\u8a8d\u3068\u30ad\u30e3\u30b9\u30c8\u3092\u540c\u6642\u306b\u884c\u3048\u308b\u6a5f\u80fd\u3067\u3059\u3002\u5f93\u6765\u306f\u300cif (obj instanceof String) { String s = (String) obj; ... }\u300d\u30682\u30b9\u30c6\u30c3\u30d7\u5fc5\u8981\u3067\u3057\u305f\u304c\u3001\u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u30f3\u30b0\u3067\u306f\u30b9\u30b3\u30fc\u30d7\u5185\u3067\u5909\u6570s\u304cString\u578b\u3068\u3057\u3066\u76f4\u63a5\u4f7f\u3048\u307e\u3059\u3002\u30b3\u30fc\u30c9\u304c\u7c21\u6f54\u306b\u306a\u308a\u30ad\u30e3\u30b9\u30c8\u6f0f\u308c\u306e\u30d0\u30b0\u3082\u9632\u3052\u307e\u3059\u3002Java 17\u4ee5\u964d\u306eLTS\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u4f7f\u3063\u3066\u3044\u308b\u5834\u5408\u306f\u7a4d\u6975\u7684\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. \u6f14\u7b97\u5b50\u306e\u512a\u5148\u9806\u4f4d\u3092\u5168\u90e8\u6697\u8a18\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u5168\u90e8\u3092\u6697\u8a18\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u91cd\u8981\u306a\u30eb\u30fc\u30eb\u306f\u300c\u7b97\u8853 > \u6bd4\u8f03 > \u8ad6\u7406 > \u4ee3\u5165\u300d\u306e\u5927\u307e\u304b\u306a\u9806\u5e8f\u3068\u3001\u300c\u8ff7\u3063\u305f\u3089\u62ec\u5f27\u3092\u4f7f\u3046\u300d\u3068\u3044\u3046\u5b9f\u8df5\u7684\u30eb\u30fc\u30eb\u3067\u3059\u3002\u7279\u306b\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\uff08&, |, ^\uff09\u306f\u6bd4\u8f03\u6f14\u7b97\u5b50\uff08==, !=\uff09\u3088\u308a\u512a\u5148\u9806\u4f4d\u304c\u4f4e\u3044\u70b9\u3092\u77e5\u3089\u306a\u3044\u3068\u30d0\u30b0\u306b\u306a\u308a\u307e\u3059\u3002\u5b9f\u52d9\u3067\u306f\u300c\u30b3\u30fc\u30c9\u3092\u8aad\u3080\u4eba\u304c\u4e00\u76ee\u3067\u8a55\u4fa1\u9806\u3092\u7406\u89e3\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u300d\u3092\u57fa\u6e96\u306b\u62ec\u5f27\u3092\u8ffd\u52a0\u3059\u308b\u7fd2\u6163\u3092\u3064\u3051\u307e\u3057\u3087\u3046\u3002\u62ec\u5f27\u306f\u4f59\u5206\u306b\u4ed8\u3051\u3066\u3082\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u306f\u5f71\u97ff\u3057\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. Java\u306e\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u306f\u3044\u3064\u4f7f\u3044\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u306e\u4e3b\u306a\u4f7f\u7528\u5834\u9762\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002\u2460\u6a29\u9650\u30d5\u30e9\u30b0\u7ba1\u7406\uff08\u8907\u6570\u306e\u6a29\u9650\u3092int1\u3064\u3067\u8868\u73fe\u3001READ=1, WRITE=2, ADMIN=4\u306a\u3069\uff09\u2461\u30cf\u30c3\u30b7\u30e5\u5024\u8a08\u7b97\uff08hashCode\u5b9f\u88c5\u3067XOR\u3092\u4f7f\u3046\u30d1\u30bf\u30fc\u30f3\uff09\u2462\u30d7\u30ed\u30c8\u30b3\u30eb\u89e3\u6790\uff08\u30d0\u30a4\u30ca\u30ea\u30c7\u30fc\u30bf\u306e\u30d3\u30c3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u62bd\u51fa\uff09\u2463\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\uff082\u306e\u4e57\u6570\u3067\u306e\u4e57\u9664\u7b97\u3092\u30b7\u30d5\u30c8\u3067\u4ee3\u66ff\uff09\u3002\u901a\u5e38\u306eWeb\u30a2\u30d7\u30ea\u958b\u767a\u3067\u306f\u4f7f\u7528\u983b\u5ea6\u306f\u4f4e\u3081\u3067\u3059\u304c\u3001\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e\u30bd\u30fc\u30b9\u3084\u4f4e\u30ec\u30d9\u30eb\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30b3\u30fc\u30c9\u3092\u8aad\u3080\u969b\u306b\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002EnumSet\u3092\u4f7f\u3046\u3068\u30d3\u30c3\u30c8\u6f14\u7b97\u3092\u3088\u308a\u5b89\u5168\u306b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u7684\u306b\u6271\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Java\u306e\u300c==\u300d\u3067\u6587\u5b57\u5217\u3092\u6bd4\u8f03\u3059\u308b\u3068\u306a\u305cfalse\u306b\u306a\u308b\u306e\u3067\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Java\u3067\u306f\u300c==\u300d\u6f14\u7b97\u5b50\u304c\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u578b\uff08String\u306a\u3069\u306fObject\uff09\u306e\u5834\u5408\u3001\u5024\u306e\u5185\u5bb9\u3067\u306f\u306a\u304f\u300c\u53c2\u7167\uff08\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9\uff09\u300d\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002\u540c\u3058\u6587\u5b57\u5217\u3067\u3082\u300cnew String(\\\"abc\\\")\u300d\u3067\u4f5c\u6210\u3057\u305f\u5834\u5408\u306f\u5225\u3005\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u751f\u6210\u3055\u308c\u308b\u305f\u3081\u3001\u53c2\u7167\u5148\u304c\u7570\u306a\u308a\u300c==\u300d\u3067\u306ffalse\u306b\u306a\u308a\u307e\u3059\u3002\u6587\u5b57\u5217\u306e\u5185\u5bb9\u3092\u6bd4\u8f03\u3059\u308b\u306b\u306f\u5fc5\u305a\u300c.equals()\u300d\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u300c\\\"abc\\\".equals(str)\u300d\u3068\u3044\u3046\u66f8\u304d\u65b9\uff08\u5b9a\u6570\u30ea\u30c6\u30e9\u30eb\u3092\u5148\u306b\u7f6e\u304f\uff09\u306f\u3001str\u304cnull\u3067\u3082NullPointerException\u304c\u767a\u751f\u3057\u306a\u3044\u305f\u3081\u5b89\u5168\u3067\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u6f14\u7b97\u5b50\u306e\u524d\u7f6e\uff08++x\uff09\u3068\u5f8c\u7f6e\uff08x++\uff09\u306f\u3069\u3061\u3089\u3092\u4f7f\u3048\u3070\u3088\u3044\u3067\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"for\u30eb\u30fc\u30d7\u306e\u30ab\u30a6\u30f3\u30bf\u5909\u6570\u5358\u72ec\u3067\u306e\u4f7f\u7528\uff08\u300ci++\u300d\u307e\u305f\u306f\u300c++i\u300d\u306e\u307f\u306e\u6587\uff09\u3067\u306f\u3001\u3069\u3061\u3089\u3067\u3082\u540c\u3058\u52d5\u4f5c\u3067\u3059\u3002\u3057\u304b\u3057\u300cy = ++x\u300d\uff08\u524d\u7f6e\uff09\u3068\u300cy = x++\u300d\uff08\u5f8c\u7f6e\uff09\u3067\u306f\u5f0f\u306e\u8a55\u4fa1\u30bf\u30a4\u30df\u30f3\u30b0\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u524d\u7f6e\u306f\u300c\u5148\u306bx\u3092\u5897\u3084\u3057\u3066\u304b\u3089y\u306b\u4ee3\u5165\u300d\u3001\u5f8c\u7f6e\u306f\u300cy\u306b\u73fe\u5728\u306ex\u3092\u4ee3\u5165\u3057\u3066\u304b\u3089x\u3092\u5897\u3084\u3059\u300d\u3067\u3059\u3002\u4ee3\u5165\u3084\u4ed6\u306e\u6f14\u7b97\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u5834\u5408\u306f\u524d\u7f6e\u30fb\u5f8c\u7f6e\u306e\u9055\u3044\u306b\u6ce8\u610f\u3057\u3001\u8907\u96d1\u306a\u5f0f\u3067\u306e\u4f7f\u7528\u306f\u907f\u3051\u3066\u5225\u3005\u306e\u884c\u306b\u5206\u3051\u308b\u306e\u304c\u5b89\u5168\u3067\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"\u300c&&\u300d\u3068\u300c&\u300d\u306e\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u300c&&\u300d\uff08\u8ad6\u7406AND\uff09\u306f\u300c\u77ed\u7d61\u8a55\u4fa1\uff08\u30b7\u30e7\u30fc\u30c8\u30b5\u30fc\u30ad\u30c3\u30c8\u8a55\u4fa1\uff09\u300d\u3092\u884c\u3044\u307e\u3059\u3002\u5de6\u8fba\u304cfalse\u306e\u5834\u5408\u3001\u53f3\u8fba\u306f\u8a55\u4fa1\u3055\u308c\u307e\u305b\u3093\u3002\u300c&\u300d\uff08\u30d3\u30c3\u30c8AND\uff09\u306f\u5e38\u306b\u4e21\u8fba\u3092\u8a55\u4fa1\u3057\u3066\u304b\u3089AND\u6f14\u7b97\u3057\u307e\u3059\u3002\u5b9f\u52d9\u3067\u306f\u300c&&\u300d\u3092\u4f7f\u3046\u306e\u304c\u4e00\u822c\u7684\u3067\u3001\u7279\u306bnull\u30c1\u30a7\u30c3\u30af\u3092\u5de6\u8fba\u306b\u7f6e\u304f\u3053\u3068\u3067NullPointerException\u3092\u9632\u6b62\u3067\u304d\u307e\u3059\u3002\u300c&\u300d\u306f\u30d3\u30c3\u30c8\u6f14\u7b97\uff08\u6a29\u9650\u30d5\u30e9\u30b0\u306a\u3069\uff09\u3084\u3001\u526f\u4f5c\u7528\u306e\u3042\u308b\u5f0f\u3092\u4e21\u8fba\u5fc5\u305a\u8a55\u4fa1\u3057\u305f\u3044\u7279\u6b8a\u306a\u30b1\u30fc\u30b9\u3067\u4f7f\u7528\u3057\u307e\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"\u4e09\u9805\u6f14\u7b97\u5b50\uff08? :\uff09\u306f\u3069\u306e\u3088\u3046\u306a\u5834\u9762\u3067\u4f7f\u3046\u3079\u304d\u3067\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u4e09\u9805\u6f14\u7b97\u5b50\u306f\u300c\u30b7\u30f3\u30d7\u30eb\u306a2\u629e\u306e\u6761\u4ef6\u30671\u884c\u306b\u53ce\u307e\u308b\u5834\u5408\u300d\u306b\u9650\u5b9a\u3057\u3066\u4f7f\u3046\u306e\u304c\u63a8\u5968\u3067\u3059\u3002\u5177\u4f53\u4f8b\uff1a\u300cString label = (count > 0) ? count + \\\"\u4ef6\\\" : \\\"\u306a\u3057\\\";\u300d\u306e\u3088\u3046\u306a\u5909\u6570\u306e\u521d\u671f\u5316\u30023\u6bb5\u968e\u4ee5\u4e0a\u306e\u6761\u4ef6\u5206\u5c90\u3084\u30cd\u30b9\u30c8\uff08\u4e09\u9805\u6f14\u7b97\u5b50\u306e\u4e2d\u306b\u3055\u3089\u306b\u4e09\u9805\u6f14\u7b97\u5b50\uff09\u306f\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3092\u5927\u304d\u304f\u4e0b\u3052\u308b\u305f\u3081\u3001\u7d20\u76f4\u306bif-else\u6587\u3092\u4f7f\u3044\u307e\u3057\u3087\u3046\u3002\u30c1\u30fc\u30e0\u958b\u767a\u3067\u306f\u300c1\u884c\u30fb2\u629e\u30fb\u526f\u4f5c\u7528\u306a\u3057\u300d\u3092\u4e09\u9805\u6f14\u7b97\u5b50\u306e\u9069\u7528\u57fa\u6e96\u306b\u3059\u308b\u306e\u304c\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3067\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"instanceof\u6f14\u7b97\u5b50\u306e\u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u30f3\u30b0\u3068\u306f\u3069\u3046\u3044\u3046\u6a5f\u80fd\u3067\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Java 16\u304b\u3089\u6b63\u5f0f\u5c0e\u5165\u3055\u308c\u305f\u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u30f3\u30b0\u306f\u3001\u300cif (obj instanceof String s)\u300d\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3067\u3001\u578b\u78ba\u8a8d\u3068\u30ad\u30e3\u30b9\u30c8\u3092\u540c\u6642\u306b\u884c\u3048\u308b\u6a5f\u80fd\u3067\u3059\u3002\u5f93\u6765\u306f\u300cif (obj instanceof String) { String s = (String) obj; ... }\u300d\u30682\u30b9\u30c6\u30c3\u30d7\u5fc5\u8981\u3067\u3057\u305f\u304c\u3001\u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u30f3\u30b0\u3067\u306f\u30b9\u30b3\u30fc\u30d7\u5185\u3067\u5909\u6570s\u304cString\u578b\u3068\u3057\u3066\u76f4\u63a5\u4f7f\u3048\u307e\u3059\u3002\u30b3\u30fc\u30c9\u304c\u7c21\u6f54\u306b\u306a\u308a\u30ad\u30e3\u30b9\u30c8\u6f0f\u308c\u306e\u30d0\u30b0\u3082\u9632\u3052\u307e\u3059\u3002Java 17\u4ee5\u964d\u306eLTS\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u4f7f\u3063\u3066\u3044\u308b\u5834\u5408\u306f\u7a4d\u6975\u7684\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"\u6f14\u7b97\u5b50\u306e\u512a\u5148\u9806\u4f4d\u3092\u5168\u90e8\u6697\u8a18\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u5168\u90e8\u3092\u6697\u8a18\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u91cd\u8981\u306a\u30eb\u30fc\u30eb\u306f\u300c\u7b97\u8853 > \u6bd4\u8f03 > \u8ad6\u7406 > \u4ee3\u5165\u300d\u306e\u5927\u307e\u304b\u306a\u9806\u5e8f\u3068\u3001\u300c\u8ff7\u3063\u305f\u3089\u62ec\u5f27\u3092\u4f7f\u3046\u300d\u3068\u3044\u3046\u5b9f\u8df5\u7684\u30eb\u30fc\u30eb\u3067\u3059\u3002\u7279\u306b\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\uff08&, |, ^\uff09\u306f\u6bd4\u8f03\u6f14\u7b97\u5b50\uff08==, !=\uff09\u3088\u308a\u512a\u5148\u9806\u4f4d\u304c\u4f4e\u3044\u70b9\u3092\u77e5\u3089\u306a\u3044\u3068\u30d0\u30b0\u306b\u306a\u308a\u307e\u3059\u3002\u5b9f\u52d9\u3067\u306f\u300c\u30b3\u30fc\u30c9\u3092\u8aad\u3080\u4eba\u304c\u4e00\u76ee\u3067\u8a55\u4fa1\u9806\u3092\u7406\u89e3\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u300d\u3092\u57fa\u6e96\u306b\u62ec\u5f27\u3092\u8ffd\u52a0\u3059\u308b\u7fd2\u6163\u3092\u3064\u3051\u307e\u3057\u3087\u3046\u3002\u62ec\u5f27\u306f\u4f59\u5206\u306b\u4ed8\u3051\u3066\u3082\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u306f\u5f71\u97ff\u3057\u307e\u305b\u3093\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Java\u306e\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u306f\u3044\u3064\u4f7f\u3044\u307e\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": 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