{"id":25848,"date":"2026-08-02T05:18:24","date_gmt":"2026-08-01T20:18:24","guid":{"rendered":"https:\/\/genai-ai.co.jp\/ai-kanri\/?p=25848"},"modified":"2026-08-08T15:24:50","modified_gmt":"2026-08-08T06:24:50","slug":"cc-bigdecimal-money-risk","status":"publish","type":"post","link":"https:\/\/genai-ai.co.jp\/ai-kanri\/blog\/cc-bigdecimal-money-risk\/","title":{"rendered":"\u30102026\u5e748\u6708\u6700\u65b0\u3011\u306a\u305c\u8acb\u6c42\u91d1\u984d\u306b1\u5186\u306e\u30ba\u30ec\u304c\u51fa\u308b\u306e\u304b\uff1f\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u300c\u8a08\u7b97\u8aa4\u5dee\u300d\u3068BigDecimal\u306e\u8a71"},"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\/08\/thumb-cc-bigdecimal-money-risk-5.jpg\" alt=\"\u30102026\u5e748\u6708\u6700\u65b0\u3011\u306a\u305c\u8acb\u6c42\u91d1\u984d\u306b1\u5186\u306e\u30ba\u30ec\u304c\u51fa\u308b\u306e\u304b\uff1f\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u300c\u8a08\u7b97\u8aa4\u5dee\u300d\u3068BigDecimal\u306e\u8a71\" style=\"width:100%;height:auto;border-radius:12px;display:block;\">\n<\/div>\n\n\n\n\n\n\n\n<p class=\"wp-block-paragraph\">\u300c\u30b7\u30b9\u30c6\u30e0\u304c\u51fa\u3057\u305f\u8acb\u6c42\u91d1\u984d\u3068\u3001\u96fb\u5353\u3067\u8a08\u7b97\u3057\u305f\u91d1\u984d\u304c1\u5186\u3060\u3051\u5408\u308f\u306a\u3044\u300d\u2014\u2014\u7d4c\u7406\u62c5\u5f53\u3084\u304a\u5ba2\u69d8\u304b\u3089\u3053\u3093\u306a\u6307\u6458\u3092\u53d7\u3051\u3066\u3001\u539f\u56e0\u304c\u5206\u304b\u3089\u305a\u56f0\u3063\u305f\u7d4c\u9a13\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u591a\u304f\u306e\u5834\u5408\u3001\u3053\u308c\u306f<strong>\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30d0\u30b0\u3067\u306f\u306a\u304f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304c\u6570\u5024\u3092\u6271\u3046\u4ed5\u7d44\u307f\u305d\u306e\u3082\u306e\u306b\u7531\u6765\u3059\u308b\u300c\u8a08\u7b97\u8aa4\u5dee\u300d<\/strong>\u304c\u539f\u56e0\u3067\u3059\u3002\u7279\u306bJava\u3067\u958b\u767a\u3055\u308c\u305f\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u3053\u306e\u554f\u984c\u3078\u306e\u5bfe\u51e6\u6cd5\u3068\u3057\u3066<code>BigDecimal<\/code>\u3068\u3044\u3046\u30af\u30e9\u30b9\u304c\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u306a\u305c\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u8a08\u7b97\u306b\u8aa4\u5dee\u304c\u751f\u307e\u308c\u308b\u306e\u304b\u3068\u3044\u3046\u539f\u7406\u3092\u3001<strong>\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u7d4c\u55b6\u8005\u30fb\u7ba1\u7406\u8077\u306e\u65b9\u3067\u3082\u7406\u89e3\u3067\u304d\u308b\u8a00\u8449<\/strong>\u3067\u89e3\u8aac\u3057\u307e\u3059\u3002\u5f8c\u534a\u3067\u306f\u3001\u5f0a\u793e\uff08\u682a\u5f0f\u4f1a\u793eGENAI\uff09\u304cAI\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u300cClaude Code\u300d\u3092\u4f7f\u3063\u3066\u3001\u3053\u3046\u3057\u305f\u8a08\u7b97\u30ed\u30b8\u30c3\u30af\u306e\u30ea\u30b9\u30af\u3092\u3069\u3046\u6d17\u3044\u51fa\u3057\u3066\u3044\u308b\u304b\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\">\u300c1\u5186\u306e\u30ba\u30ec\u304f\u3089\u3044\u5225\u306b\u3044\u3044\u306e\u3067\u306f\u300d\u3068\u601d\u3046\u65b9\u3082\u3044\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u91d1\u878d\u30fb\u4f1a\u8a08\u30b7\u30b9\u30c6\u30e0\u3067\u306f1\u5186\u306e\u30ba\u30ec\u304c\u76e3\u67fb\u3067\u6307\u6458\u3055\u308c\u305f\u308a\u3001\u304a\u5ba2\u69d8\u304b\u3089\u306e\u4fe1\u983c\u3092\u640d\u306a\u3063\u305f\u308a\u3059\u308b\u91cd\u5927\u306a\u554f\u984c\u306b\u306a\u308a\u5f97\u307e\u3059\u3002\u539f\u7406\u3092\u77e5\u3063\u3066\u304a\u304f\u3068\u3001\u767a\u6ce8\u6642\u306b\u7684\u78ba\u306a\u8cea\u554f\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\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\">\u4eca\u65e5\u306f\u300c\u306a\u305c\u8aa4\u5dee\u304c\u8d77\u304d\u308b\u306e\u304b\u300d\u3068\u3044\u3046\u539f\u7406\u304b\u3089\u3001\u300c\u767a\u6ce8\u6642\u306b\u4f55\u3092\u78ba\u8a8d\u3059\u308c\u3070\u3044\u3044\u304b\u300d\u3068\u3044\u3046\u5b9f\u52d9\u307e\u3067\u3001\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u76ee\u7dda\u3067\u4e00\u6c17\u306b\u6574\u7406\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3092\u6700\u5f8c\u307e\u3067\u8aad\u3080\u3068\u3001\u6b21\u306e6\u3064\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>\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u8a08\u7b97\u3067<strong>\u300c1\u5186\u306e\u30ba\u30ec\u300d\u304c\u8d77\u304d\u308b\u6839\u672c\u7684\u306a\u539f\u56e0<\/strong><\/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>BigDecimal<\/strong>\u304c\u4f55\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u306a\u306e\u304b<\/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>\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u767a\u6ce8\u3059\u308b\u969b\u306b<strong>\u78ba\u8a8d\u3059\u3079\u304d\u5177\u4f53\u7684\u306a\u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c8<\/strong><\/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>\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u3067\u5b9f\u969b\u306b\u8d77\u304d\u304c\u3061\u306a<strong>\u8a08\u7b97\u30df\u30b9\u306e\u5178\u578b\u30d1\u30bf\u30fc\u30f3<\/strong><\/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>\u5f0a\u793eGENAI\u304c<strong>\u30b3\u30fc\u30c9\u306e\u54c1\u8cea\u30ea\u30b9\u30af\u3092AI\u3067\u3069\u3046\u6d17\u3044\u51fa\u3057\u3066\u3044\u308b\u304b<\/strong>\u306e\u5b9f\u30c7\u30fc\u30bf<\/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>\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u3067\u3082\u8a08\u7b97\u30ea\u30b9\u30af\u3092AI\u3067\u30c1\u30a7\u30c3\u30af\u3067\u304d\u308b<\/strong>\u3088\u3046\u306b\u306a\u308b\u5177\u4f53\u7684\u306a\u624b\u9806<\/span><\/div>\n\n<\/div>\n\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&utm_medium=body_cta&utm_content=cc-bigdecimal-money-risk&blog_slug=cc-bigdecimal-money-risk\" 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&utm_medium=body_cta&utm_campaign=cc-bigdecimal-money-risk&utm_content=body_cta-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\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;\">WHY IT MATTERS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u300c\u8acb\u6c42\u91d1\u984d\u304c1\u5186\u5408\u308f\u306a\u3044\u300d\u306f\u7d4c\u55b6\u30ea\u30b9\u30af\u3067\u3042\u308b\u7406\u7531<\/span>\n  <span class=\"section-desc\">\u5c0f\u3055\u306a\u8aa4\u5dee\u304c\u3001\u4fe1\u983c\u30fb\u76e3\u67fb\u30fb\u6cd5\u4ee4\u5bfe\u5fdc\u306b\u6ce2\u53ca\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c\u305f\u304b\u304c1\u5186\u300d\u3068\u8efd\u8996\u3055\u308c\u304c\u3061\u3067\u3059\u304c\u3001\u91d1\u984d\u8a08\u7b97\u306e\u30ba\u30ec\u306f\u60f3\u50cf\u4ee5\u4e0a\u306b\u6df1\u523b\u306a\u554f\u984c\u306b\u767a\u5c55\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u306b\u6b21\u306e\u3088\u3046\u306a\u5834\u9762\u3067\u306f\u3001\u7d4c\u55b6\u306b\u76f4\u7d50\u3059\u308b\u30ea\u30b9\u30af\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>\u7d4c\u7406\u76e3\u67fb\u3067\u300c\u8a08\u7b97\u6839\u62e0\u304c\u8aac\u660e\u3067\u304d\u306a\u3044\u5dee\u7570\u300d\u3068\u3057\u3066\u6307\u6458\u3055\u308c\u308b<\/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>\u5927\u91cf\u306e\u53d6\u5f15\u3092\u6271\u3046\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u30011\u4ef6\u3042\u305f\u308a1\u5186\u306e\u30ba\u30ec\u3067\u3082\u7a4d\u307f\u91cd\u306a\u308b\u3068\u7121\u8996\u3067\u304d\u306a\u3044\u91d1\u984d\u306b\u306a\u308b<\/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>\u8acb\u6c42\u66f8\u30fb\u9818\u53ce\u66f8\u306a\u3069\u306e\u6cd5\u5b9a\u66f8\u985e\u306b\u8aa4\u5dee\u306e\u3042\u308b\u91d1\u984d\u3092\u5370\u5b57\u3057\u3066\u3057\u307e\u3046<\/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>\u304a\u5ba2\u69d8\u304b\u3089\u300c\u91d1\u984d\u304c\u5408\u308f\u306a\u3044\u300d\u3068\u554f\u3044\u5408\u308f\u305b\u304c\u5165\u308a\u3001\u5bfe\u5fdc\u30b3\u30b9\u30c8\u3068\u4fe1\u983c\u4f4e\u4e0b\u304c\u767a\u751f\u3059\u308b<\/span><\/div>\n\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u591a\u304f\u306f\u3001<strong>\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304c\u6570\u5024\u3092\u3069\u3046\u6271\u3063\u3066\u3044\u308b\u304b<\/strong>\u3068\u3044\u3046\u3001\u958b\u767a\u8005\u4ee5\u5916\u306b\u306f\u3042\u307e\u308a\u77e5\u3089\u308c\u3066\u3044\u306a\u3044\u4ed5\u7d44\u307f\u306b\u8d77\u56e0\u3057\u307e\u3059\u3002\u6b21\u7ae0\u304b\u3089\u3001\u305d\u306e\u539f\u7406\u3092\u7d10\u89e3\u3044\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\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;\">\u7d4c\u55b6\u8005\u304c\u62bc\u3055\u3048\u308b\u3079\u304d\u512a\u5148\u5ea6<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u91d1\u984d\u3092\u6271\u3046\u30b7\u30b9\u30c6\u30e0\uff08\u8acb\u6c42\u30fb\u4f1a\u8a08\u30fb\u5728\u5eab\u8a55\u4fa1\u984d\u306a\u3069\uff09\u3092\u65b0\u898f\u958b\u767a\u30fb\u6539\u4fee\u3059\u308b\u969b\u306f\u3001<strong>\u300c\u91d1\u984d\u8a08\u7b97\u306bBigDecimal\u76f8\u5f53\u306e\u4ed5\u7d44\u307f\u3092\u4f7f\u3063\u3066\u3044\u308b\u304b\u300d\u3092\u767a\u6ce8\u6642\u306b\u78ba\u8a8d\u3059\u308b<\/strong>\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002\u3053\u306e\u4e00\u8a00\u3092\u4f1d\u3048\u3089\u308c\u308b\u304b\u3069\u3046\u304b\u3067\u3001\u5f8c\u3005\u306e\u624b\u623b\u308a\u30ea\u30b9\u30af\u304c\u5927\u304d\u304f\u5909\u308f\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\">\u5f0a\u793e\u304c\u904e\u53bb\u306b\u76f8\u8ac7\u3092\u53d7\u3051\u305f\u6848\u4ef6\u3067\u3082\u3001\u65e2\u5b58\u30b7\u30b9\u30c6\u30e0\u306e\u91d1\u984d\u8a08\u7b97\u306b\u6d6e\u52d5\u5c0f\u6570\u70b9\u3092\u305d\u306e\u307e\u307e\u4f7f\u3063\u3066\u3044\u3066\u3001\u6708\u6b21\u6c7a\u7b97\u306e\u305f\u3073\u306b\u6570\u5186\u301c\u6570\u5341\u5186\u306e\u30ba\u30ec\u3092\u624b\u4f5c\u696d\u3067\u8abf\u6574\u3057\u3066\u3044\u305f\u3001\u3068\u3044\u3046\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u539f\u56e0\u3092\u7279\u5b9a\u3059\u308b\u3060\u3051\u3067\u6570\u6642\u9593\u304b\u304b\u3063\u3066\u3044\u305f\u305d\u3046\u3067\u3059\u3002<\/div>\n<\/div>\n\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&utm_medium=body_cta&utm_content=cc-bigdecimal-money-risk&blog_slug=cc-bigdecimal-money-risk\" 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&utm_medium=body_cta&utm_campaign=cc-bigdecimal-money-risk&utm_content=body_cta-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\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;\">ROOT CAUSE<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u6d6e\u52d5\u5c0f\u6570\u70b9\u3068\u306f\u4f55\u304b\u2014\u2014\u8aa4\u5dee\u304c\u751f\u307e\u308c\u308b\u6839\u672c\u539f\u56e0<\/span>\n  <span class=\"section-desc\">\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306f\u300c0.1\u300d\u3092\u6b63\u78ba\u306b\u8868\u73fe\u3067\u304d\u306a\u3044<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u591a\u304f\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u306f\u3001\u5c0f\u6570\u3092\u6271\u3046\u969b\u306b<strong>\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\uff08floating point\uff09<\/strong>\u3068\u3044\u3046\u5f62\u5f0f\u304c\u6a19\u6e96\u3067\u4f7f\u308f\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u975e\u5e38\u306b\u5e83\u3044\u7bc4\u56f2\u306e\u6570\u5024\u3092\u52b9\u7387\u3088\u304f\u6271\u3048\u308b\u4fbf\u5229\u306a\u4ed5\u7d44\u307f\u3067\u3059\u304c\u3001\u5b9f\u306f\u5927\u304d\u306a\u5f31\u70b9\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>\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570<\/strong>\uff1a\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u5185\u90e8\u3067\u5c0f\u6570\u3092\u300c2\u9032\u6570\u300d\u306e\u6307\u6570\u8868\u73fe\u3068\u3057\u3066\u6271\u3046\u6570\u5024\u5f62\u5f0f\u3002\u5e83\u3044\u7bc4\u56f2\u306e\u6570\u5024\u3092\u5c11\u306a\u3044\u30e1\u30e2\u30ea\u3067\u6271\u3048\u308b\u5229\u70b9\u304c\u3042\u308b\u4e00\u65b9\u3001<strong>10\u9032\u6570\u306e\u5c0f\u6570\uff080.1\u30010.3\u306a\u3069\uff09\u30922\u9032\u6570\u3067\u306f\u6b63\u78ba\u306b\u8868\u73fe\u3067\u304d\u306a\u3044<\/strong>\u3068\u3044\u3046\u7279\u6027\u304c\u3042\u308a\u307e\u3059\u3002Java\u306edouble\u3084float\u306f\u3053\u306e\u5f62\u5f0f\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eba\u9593\u304c\u666e\u6bb5\u4f7f\u304610\u9032\u6570\uff080\u301c9\u306e10\u7a2e\u985e\u306e\u6570\u5b57\uff09\u3067\u306f0.1\u3068\u3044\u3046\u6570\u306f\u304d\u308c\u3044\u306b\u8868\u73fe\u3067\u304d\u307e\u3059\u304c\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304c\u5185\u90e8\u3067\u4f7f\u30462\u9032\u6570\uff080\u30681\u3060\u3051\uff09\u3067\u306f\u30010.1\u3092\u6b63\u78ba\u306a\u5024\u3068\u3057\u3066\u8868\u73fe\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u3053\u308c\u306f\u3001\u79c1\u305f\u3061\u304c\u300c1\/3\u300d\u309210\u9032\u6570\u306e\u5c0f\u6570\u3067\u6b63\u78ba\u306b\u66f8\u304d\u8868\u305b\u306a\u3044\uff080.333\u2026\u3068\u7121\u9650\u306b\u7d9a\u304f\uff09\u306e\u3068\u4f3c\u305f\u73fe\u8c61\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u7d50\u679c\u3001\u4f8b\u3048\u3070\u300c0.1 + 0.2\u300d\u3092\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u8a08\u7b97\u3059\u308b\u3068\u3001\u6570\u5b66\u7684\u306b\u306f0.3\u306b\u306a\u308b\u306f\u305a\u304c\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u5185\u90e8\u3067\u306f<strong>0.30000000000000004\u306e\u3088\u3046\u306a\u3001\u3054\u304f\u308f\u305a\u304b\u306b\u30ba\u30ec\u305f\u5024<\/strong>\u3068\u3057\u3066\u6271\u308f\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4eba\u9593\u306e\u76ee\u306b\u306f\u307b\u307c\u898b\u3048\u306a\u3044\u8aa4\u5dee\u3067\u3059\u304c\u3001\u91d1\u984d\u8a08\u7b97\u306e\u3088\u3046\u306b<strong>\u300c1\u5186\u5358\u4f4d\u306e\u6b63\u78ba\u6027\u300d\u304c\u6c42\u3081\u3089\u308c\u308b\u5834\u9762\u3067\u306f\u81f4\u547d\u7684\u306a\u554f\u984c<\/strong>\u306b\u306a\u308a\u307e\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;\">\u91d1\u984d\u3092\u6271\u3046\u30d7\u30ed\u30b0\u30e9\u30e0\u3067double\/float\u3092\u4f7f\u3046\u306e\u306f\u907f\u3051\u308b<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">Java\u306b\u9650\u3089\u305a\u591a\u304f\u306e\u8a00\u8a9e\u3067\u3001<strong>\u91d1\u984d\u8a08\u7b97\u306b\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\uff08double\/float\uff09\u3092\u76f4\u63a5\u4f7f\u3046\u306e\u306f\u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3<\/strong>\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u898b\u7a4d\u3082\u308a\u30fb\u8acb\u6c42\u30fb\u4f1a\u8a08\u306a\u3069\u300c1\u5186\u5358\u4f4d\u306e\u6b63\u78ba\u6027\u300d\u304c\u6c42\u3081\u3089\u308c\u308b\u51e6\u7406\u3067\u306f\u3001\u5f8c\u8ff0\u3059\u308bBigDecimal\u306e\u3088\u3046\u306a\u300c\u8aa4\u5dee\u306e\u51fa\u306a\u3044\u300d\u4ed5\u7d44\u307f\u3092\u4f7f\u3046\u306e\u304c\u5b9a\u77f3\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\">\u300c\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306f\u8a08\u7b97\u304c\u5f97\u610f\u306a\u306f\u305a\u300d\u3068\u3044\u3046\u30a4\u30e1\u30fc\u30b8\u3068\u771f\u9006\u306e\u8a71\u306b\u805e\u3053\u3048\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u3053\u308c\u306f\u5b9f\u88c5\u306e\u30d0\u30b0\u3067\u306f\u306a\u304f\u3001\u6d6e\u52d5\u5c0f\u6570\u70b9\u3068\u3044\u3046\u4ed5\u7d44\u307f\u305d\u306e\u3082\u306e\u306e\u6027\u8cea\u3067\u3059\u3002\u3060\u304b\u3089\u3053\u305d\u3001\u5bfe\u7b56\u65b9\u6cd5\u304c\u78ba\u7acb\u3055\u308c\u3066\u3044\u308b\u3093\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">2-1. \u306a\u305c\u3053\u306e\u4ed5\u7d44\u307f\u304c\u4eca\u3082\u4f7f\u308f\u308c\u3066\u3044\u308b\u306e\u304b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c\u8aa4\u5dee\u304c\u51fa\u308b\u306a\u3089\u3001\u305d\u3093\u306a\u4ed5\u7d44\u307f\u306f\u4f7f\u308f\u306a\u3051\u308c\u3070\u3044\u3044\u306e\u3067\u306f\u300d\u3068\u601d\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u306b\u306f\u3001<strong>\u79d1\u5b66\u6280\u8853\u8a08\u7b97\u3084\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u51e6\u7406\u306a\u3069\u3001\u591a\u5c11\u306e\u8aa4\u5dee\u3088\u308a\u51e6\u7406\u901f\u5ea6\u3084\u6271\u3048\u308b\u6570\u5024\u306e\u7bc4\u56f2\u306e\u5e83\u3055\u304c\u91cd\u8996\u3055\u308c\u308b\u5834\u9762<\/strong>\u3067\u5727\u5012\u7684\u306a\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002\u30b2\u30fc\u30e0\u306e\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u8a08\u7b97\u3084\u3001\u6a5f\u68b0\u5b66\u7fd2\u306e\u5185\u90e8\u51e6\u7406\u306a\u3069\u3001\u79c1\u305f\u3061\u304c\u65e5\u5e38\u3067\u6069\u6075\u3092\u53d7\u3051\u3066\u3044\u308b\u591a\u304f\u306e\u6280\u8853\u304c\u3053\u306e\u4ed5\u7d44\u307f\u306e\u4e0a\u306b\u6210\u308a\u7acb\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3064\u307e\u308a\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u81ea\u4f53\u304c\u300c\u60aa\u3044\u4ed5\u7d44\u307f\u300d\u306a\u306e\u3067\u306f\u306a\u304f\u3001<strong>\u300c\u91d1\u984d\u8a08\u7b97\u3068\u3044\u3046\u3001\u6b63\u78ba\u6027\u304c\u6700\u512a\u5148\u3055\u308c\u308b\u5834\u9762\u306b\u4e0d\u5411\u304d\u306a\u4ed5\u7d44\u307f\u300d<\/strong>\u3060\u3068\u3044\u3046\u7406\u89e3\u304c\u6b63\u78ba\u3067\u3059\u3002\u9069\u6750\u9069\u6240\u306e\u8003\u3048\u65b9\u3067\u3001\u91d1\u984d\u8a08\u7b97\u306b\u306fBigDecimal\u306e\u3088\u3046\u306a\u5225\u306e\u4ed5\u7d44\u307f\u3092\u4f7f\u3046\u3001\u3068\u3044\u3046\u4f7f\u3044\u5206\u3051\u304c\u696d\u754cstandard\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2-2. \u300c\u8aa4\u5dee\u304c\u898b\u3048\u306a\u3044\u300d\u3053\u3068\u306e\u6016\u3055<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6d6e\u52d5\u5c0f\u6570\u70b9\u306e\u8aa4\u5dee\u304c\u5384\u4ecb\u306a\u306e\u306f\u3001<strong>\u753b\u9762\u8868\u793a\u4e0a\u306f\u6b63\u3057\u3044\u6570\u5b57\u306b\u898b\u3048\u3066\u3057\u307e\u3046<\/strong>\u3053\u3068\u304c\u591a\u3044\u70b9\u3067\u3059\u3002\u591a\u304f\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u8868\u793a\u6642\u306b\u4e38\u3081\u51e6\u7406\uff08\u4f8b: \u5c0f\u6570\u70b9\u4ee5\u4e0b2\u6841\u307e\u3067\u306e\u8868\u793a\uff09\u3092\u304b\u3051\u3066\u3044\u308b\u305f\u3081\u3001\u5185\u90e8\u7684\u306b\u308f\u305a\u304b\u306a\u8aa4\u5dee\u3092\u62b1\u3048\u3066\u3044\u3066\u3082\u3001\u753b\u9762\u4e0a\u306f\u300c100.00\u300d\u3068\u304d\u308c\u3044\u306b\u898b\u3048\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8aa4\u5dee\u304c\u8868\u9762\u5316\u3059\u308b\u306e\u306f\u3001<strong>\u8907\u6570\u306e\u91d1\u984d\u3092\u5408\u7b97\u30fb\u6bd4\u8f03\u30fb\u7a81\u5408\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0<\/strong>\u3067\u3059\u3002\u500b\u3005\u306e\u91d1\u984d\u306f\u6b63\u3057\u304f\u898b\u3048\u3066\u3082\u3001\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u7a4d\u307f\u4e0a\u3052\u305f\u3068\u304d\u306b\u300c\u5408\u8a08\u304c1\u5186\u5408\u308f\u306a\u3044\u300d\u3068\u3044\u3046\u5f62\u3067\u9855\u5728\u5316\u3057\u307e\u3059\u3002\u3053\u308c\u304c\u3001\u539f\u56e0\u306e\u7279\u5b9a\u306b\u6642\u9593\u304c\u304b\u304b\u308a\u3084\u3059\u3044\u7406\u7531\u3067\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\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&utm_medium=body_cta&utm_content=cc-bigdecimal-money-risk&blog_slug=cc-bigdecimal-money-risk\" 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&utm_medium=body_cta&utm_campaign=cc-bigdecimal-money-risk&utm_content=body_cta-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\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;\">THE SOLUTION<\/span>\n  <span class=\"section-title\" style=\"display:block;\">BigDecimal\u3068\u306f\u4f55\u304b\u2014\u2014\u300c\u6b63\u78ba\u306a\u8a08\u7b97\u300d\u3092\u4fdd\u8a3c\u3059\u308b\u4ed5\u7d44\u307f<\/span>\n  <span class=\"section-desc\">Java\u3067\u91d1\u984d\u8a08\u7b97\u3092\u3059\u308b\u969b\u306e\u6a19\u6e96\u7684\u306a\u5bfe\u7b56<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u524d\u7ae0\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u3001Java\u8a00\u8a9e\u3067\u306f<code>BigDecimal<\/code>\u3068\u3044\u3046\u30af\u30e9\u30b9\uff08\u6a5f\u80fd\u306e\u307e\u3068\u307e\u308a\uff09\u304c\u6a19\u6e96\u3067\u7528\u610f\u3055\u308c\u3066\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>BigDecimal<\/strong>\uff1aJava\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\uff08java.math\u30d1\u30c3\u30b1\u30fc\u30b8\uff09\u304c\u63d0\u4f9b\u3059\u308b\u3001<strong>\u4efb\u610f\u306e\u6841\u6570\u306e10\u9032\u6570\u3092\u8aa4\u5dee\u306a\u304f\u6b63\u78ba\u306b\u6271\u3046\u305f\u3081\u306e\u30af\u30e9\u30b9<\/strong>\u3002\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u306e\u3088\u3046\u306b2\u9032\u6570\u306b\u5909\u63db\u305b\u305a\u300110\u9032\u6570\u306e\u307e\u307e\u5185\u90e8\u3067\u4fdd\u6301\u3059\u308b\u305f\u3081\u30010.1\u30840.2\u3068\u3044\u3063\u305f\u5c0f\u6570\u3082\u6b63\u78ba\u306b\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002\u91d1\u984d\u30fb\u4f1a\u8a08\u8a08\u7b97\u306e\u4e8b\u5b9f\u4e0a\u306e\u6a19\u6e96\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">BigDecimal\u306f\u3001\u6570\u5024\u3092<strong>\u6574\u6570\uff08BigInteger\uff09\u3068\u30b9\u30b1\u30fc\u30eb\uff08\u6841\u6570\uff09\u306e\u7d44\u307f\u5408\u308f\u305b<\/strong>\u3068\u3057\u3066\u5185\u90e8\u7684\u306b\u4fdd\u6301\u3059\u308b\u4ed5\u7d44\u307f\u3092\u53d6\u308b\u3053\u3068\u3067\u300110\u9032\u6570\u306e\u5c0f\u6570\u30922\u9032\u6570\u306b\u5909\u63db\u3059\u308b\u969b\u306b\u751f\u3058\u308b\u8aa4\u5dee\u305d\u306e\u3082\u306e\u3092\u56de\u907f\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u91d1\u984d\u306e\u3088\u3046\u306a\u300c1\u5186\u5358\u4f4d\u3067\u6b63\u78ba\u3067\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u300d\u6570\u5024\u306e\u8a08\u7b97\u306b\u9069\u3057\u3066\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>\u4e0d\u5909\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff08\u30a4\u30df\u30e5\u30fc\u30bf\u30d6\u30eb\uff09<\/strong>\uff1a\u4e00\u5ea6\u4f5c\u6210\u3059\u308b\u3068\u5185\u90e8\u306e\u5024\u304c\u5909\u5316\u3057\u306a\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u3053\u3068\u3002BigDecimal\u306f\u4e0d\u5909\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u8a2d\u8a08\u3055\u308c\u3066\u304a\u308a\u3001<code>add<\/code>\uff08\u8db3\u3057\u7b97\uff09\u306a\u3069\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3093\u3067\u3082\u5143\u306e\u5024\u306f\u5909\u308f\u3089\u305a\u3001<strong>\u8a08\u7b97\u7d50\u679c\u3092\u6301\u3063\u305f\u65b0\u3057\u3044BigDecimal\u304c\u8fd4\u3055\u308c\u308b<\/strong>\u3068\u3044\u3046\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\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;\">double\u304b\u3089BigDecimal\u3078\u306e\u5909\u63db\u306b\u6ce8\u610f<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">BigDecimal\u3092\u4f7f\u3046\u969b\u3001<code>new BigDecimal(0.1)<\/code>\u306e\u3088\u3046\u306bdouble\u578b\u306e\u5024\u304b\u3089\u76f4\u63a5\u751f\u6210\u3059\u308b\u3068\u3001<strong>\u5143\u306edouble\u304c\u6301\u3063\u3066\u3044\u305f\u8aa4\u5dee\u3092\u305d\u306e\u307e\u307e\u5f15\u304d\u7d99\u3044\u3067\u3057\u307e\u3046<\/strong>\u3068\u3044\u3046\u843d\u3068\u3057\u7a74\u304c\u3042\u308a\u307e\u3059\u3002\u6b63\u78ba\u306a\u5024\u3092\u4fdd\u8a3c\u3059\u308b\u306b\u306f<code>new BigDecimal(\"0.1\")<\/code>\u306e\u3088\u3046\u306b\u3001\u6587\u5b57\u5217\u304b\u3089\u751f\u6210\u3059\u308b\u306e\u304c\u5b9a\u77f3\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\">\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u767a\u6ce8\u3059\u308b\u969b\u3001\u300c\u91d1\u984d\u8a08\u7b97\u306fBigDecimal\u3067\u3001double\u304b\u3089\u3067\u306f\u306a\u304f\u6587\u5b57\u5217\u304b\u3089\u751f\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u300d\u3068\u4e00\u8a00\u6dfb\u3048\u3089\u308c\u308b\u3060\u3051\u3067\u3001\u5f8c\u5de5\u7a0b\u3067\u306e\u624b\u623b\u308a\u3092\u304b\u306a\u308a\u9632\u3052\u307e\u3059\u3002\u5c02\u9580\u7528\u8a9e\u3092\u4e38\u6697\u8a18\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u3053\u306e\u4e00\u6587\u3060\u3051\u306f\u899a\u3048\u3066\u304a\u304f\u4fa1\u5024\u304c\u3042\u308a\u307e\u3059\u3002<\/div>\n<\/div>\n\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&utm_medium=body_cta&utm_content=cc-bigdecimal-money-risk&blog_slug=cc-bigdecimal-money-risk\" 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&utm_medium=body_cta&utm_campaign=cc-bigdecimal-money-risk&utm_content=body_cta-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\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;\">BASIC USAGE<\/span>\n  <span class=\"section-title\" style=\"display:block;\">BigDecimal\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\uff08\u5b9f\u4f8b\u3064\u304d\uff09<\/span>\n  <span class=\"section-desc\">\u30a8\u30f3\u30b8\u30cb\u30a2\u3068\u306e\u4f1a\u8a71\u3067\u4f7f\u3048\u308b\u6700\u4f4e\u9650\u306e\u77e5\u8b58<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c02\u9580\u7684\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u3068\u306e\u4f1a\u8a71\u3067\u300c\u4f55\u304c\u8d77\u304d\u3066\u3044\u308b\u304b\u300d\u3092\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u4ee3\u8868\u7684\u306a\u4f7f\u3044\u65b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4-1. \u57fa\u672c\u7684\u306a\u56db\u5247\u6f14\u7b97<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">BigDecimal\u540c\u58eb\u306e\u8db3\u3057\u7b97\u30fb\u5f15\u304d\u7b97\u30fb\u639b\u3051\u7b97\u30fb\u5272\u308a\u7b97\u306f\u3001\u305d\u308c\u305e\u308c<code>add<\/code>\u30fb<code>subtract<\/code>\u30fb<code>multiply<\/code>\u30fb<code>divide<\/code>\u3068\u3044\u3046\u30e1\u30bd\u30c3\u30c9\uff08\u51e6\u7406\u306e\u547c\u3073\u51fa\u3057\uff09\u3067\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u3084\u308a\u305f\u3044\u3053\u3068<\/th><th>\u30e1\u30bd\u30c3\u30c9<\/th><th>\u4f8b<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u8db3\u3057\u7b97<\/td><td>add<\/td><td><code>a.add(b)<\/code><\/td><\/tr>\n<tr><td>\u5f15\u304d\u7b97<\/td><td>subtract<\/td><td><code>a.subtract(b)<\/code><\/td><\/tr>\n<tr><td>\u639b\u3051\u7b97<\/td><td>multiply<\/td><td><code>a.multiply(b)<\/code><\/td><\/tr>\n<tr><td>\u5272\u308a\u7b97<\/td><td>divide<\/td><td><code>a.divide(b, scale, roundingMode)<\/code><\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\">\u5272\u308a\u7b97\u3060\u3051\u306f\u5c11\u3057\u7279\u6b8a\u3067\u3001\u5272\u308a\u5207\u308c\u306a\u3044\u6570\uff08\u4f8b: 10 \u00f7 3\uff09\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001<strong>\u300c\u4f55\u6841\u307e\u3067\u8a08\u7b97\u3059\u308b\u304b\uff08\u30b9\u30b1\u30fc\u30eb\uff09\u300d\u3068\u300c\u7aef\u6570\u3092\u3069\u3046\u51e6\u7406\u3059\u308b\u304b\uff08\u4e38\u3081\u30e2\u30fc\u30c9\uff09\u300d<\/strong>\u3092\u4e00\u7dd2\u306b\u6307\u5b9a\u3059\u308b\u5fc5\u8981\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>\u30b9\u30b1\u30fc\u30eb\uff08scale\uff09<\/strong>\uff1aBigDecimal\u304c\u4fdd\u6301\u3059\u308b<strong>\u5c0f\u6570\u70b9\u4ee5\u4e0b\u306e\u6841\u6570<\/strong>\u306e\u3053\u3068\u3002\u4f8b\u3048\u3070\u300c12.30\u300d\u306f\u30b9\u30b1\u30fc\u30eb2\u3001\u300c12.3\u300d\u306f\u30b9\u30b1\u30fc\u30eb1\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059\u3002\u91d1\u984d\u8a08\u7b97\u3067\u306f\u300c\u5186\u306f0\u6841\u300d\u300c\u30c9\u30eb\u306f2\u6841\u300d\u306e\u3088\u3046\u306b\u3001\u901a\u8ca8\u3054\u3068\u306b\u30b9\u30b1\u30fc\u30eb\u3092\u63c3\u3048\u308b\u30eb\u30fc\u30eb\u3092\u6c7a\u3081\u3066\u304a\u304f\u3053\u3068\u304c\u91cd\u8981\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>\u4e38\u3081\u30e2\u30fc\u30c9\uff08RoundingMode\uff09<\/strong>\uff1a\u5272\u308a\u7b97\u306a\u3069\u3067\u5272\u308a\u5207\u308c\u306a\u3044\u6570\u5024\u304c\u51fa\u305f\u969b\u3001<strong>\u7aef\u6570\u3092\u3069\u3046\u51e6\u7406\u3059\u308b\u304b<\/strong>\u3092\u6c7a\u3081\u308b\u30eb\u30fc\u30eb\u3002\u56db\u6368\u4e94\u5165\uff08HALF_UP\uff09\u3001\u5207\u308a\u4e0a\u3052\uff08UP\uff09\u3001\u5207\u308a\u6368\u3066\uff08DOWN\uff09\u306a\u3069\u8907\u6570\u306e\u7a2e\u985e\u304c\u3042\u308a\u3001Java\u3067\u306f\u6307\u5b9a\u3092\u7701\u7565\u3059\u308b\u3068\u4f8b\u5916\uff08\u30a8\u30e9\u30fc\uff09\u304c\u767a\u751f\u3059\u308b\u5834\u5408\u304c\u3042\u308b\u305f\u3081\u3001\u660e\u793a\u7684\u306a\u6307\u5b9a\u304c\u5fc5\u9808\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">4-2. \u6841\u6570\u306e\u6307\u5b9a\u3068\u56db\u6368\u4e94\u5165<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u91d1\u984d\u8a08\u7b97\u3067\u306f\u300c\u5c0f\u6570\u70b9\u4ee5\u4e0b2\u6841\u3067\u56db\u6368\u4e94\u5165\u3059\u308b\u300d\u3068\u3044\u3063\u305f\u51e6\u7406\u304c\u983b\u7e41\u306b\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002BigDecimal\u3067\u306f<code>setScale<\/code>\u3068\u3044\u3046\u30e1\u30bd\u30c3\u30c9\u3067\u3001\u6841\u6570\u3068\u4e38\u3081\u65b9\uff08\u56db\u6368\u4e94\u5165\u30fb\u5207\u308a\u4e0a\u3052\u30fb\u5207\u308a\u6368\u3066\u306a\u3069\uff09\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u4e38\u3081\u30e2\u30fc\u30c9<\/th><th>\u610f\u5473<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>HALF_UP<\/td><td>\u4e00\u822c\u7684\u306a\u56db\u6368\u4e94\u5165\uff085\u306f\u5207\u308a\u4e0a\u3052\uff09<\/td><\/tr>\n<tr><td>UP<\/td><td>\u5e38\u306b\u7d76\u5bfe\u5024\u3092\u5927\u304d\u3044\u65b9\u5411\u306b\u5207\u308a\u4e0a\u3052<\/td><\/tr>\n<tr><td>DOWN<\/td><td>\u5e38\u306b\u7d76\u5bfe\u5024\u3092\u5c0f\u3055\u3044\u65b9\u5411\u306b\u5207\u308a\u6368\u3066<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<h3 class=\"wp-block-heading\">4-3. \u6570\u5024\u306e\u6bd4\u8f03\u306f\u8981\u6ce8\u610f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">BigDecimal\u540c\u58eb\u306e\u5024\u3092\u6bd4\u8f03\u3059\u308b\u969b\u3001Java\u306e\u4e00\u822c\u7684\u306a\u7b49\u4fa1\u6bd4\u8f03\u3067\u3042\u308b<code>equals<\/code>\u3067\u306f\u306a\u304f<code>compareTo<\/code>\u3092\u4f7f\u3046\u306e\u304c\u5b9a\u77f3\u3067\u3059\u3002\u7406\u7531\u306f\u3001<code>equals<\/code>\u304c\u6570\u5024\u3060\u3051\u3067\u306a\u304f\u300c\u6841\u6570\uff08\u30b9\u30b1\u30fc\u30eb\uff09\u300d\u307e\u3067\u542b\u3081\u3066\u6bd4\u8f03\u3059\u308b\u305f\u3081\u3001\u6570\u5b66\u7684\u306b\u306f\u540c\u3058\u5024\uff08\u4f8b: 2.0\u30682.00\uff09\u3067\u3082\u7570\u306a\u308b\u5024\u3068\u3057\u3066\u5224\u5b9a\u3055\u308c\u3066\u3057\u307e\u3046\u3053\u3068\u304c\u3042\u308b\u305f\u3081\u3067\u3059\u3002<code>compareTo<\/code>\u3092\u4f7f\u3048\u3070\u3001\u6841\u6570\u306e\u9055\u3044\u3092\u7121\u8996\u3057\u3066\u7d14\u7c8b\u306b\u6570\u5024\u306e\u5927\u5c0f\u30fb\u4e00\u81f4\u3060\u3051\u3092\u6bd4\u8f03\u3067\u304d\u307e\u3059\u3002<\/p>\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;\">\u30a8\u30f3\u30b8\u30cb\u30a2\u3068\u306e\u4f1a\u8a71\u3067\u4f7f\u3048\u308b\u30c1\u30a7\u30c3\u30af\u8cea\u554f<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u300c\u91d1\u984d\u306e\u6bd4\u8f03\u306b\u306fcompareTo\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u304b\uff1fequals\u3060\u3068\u6841\u6570\u306e\u9055\u3044\u3067\u8aa4\u5224\u5b9a\u3059\u308b\u3053\u3068\u304c\u3042\u308b\u306e\u3067\u300d\u3068\u8cea\u554f\u3067\u304d\u308c\u3070\u3001\u5b9f\u88c5\u30ec\u30d9\u30eb\u306e\u7406\u89e3\u304c\u3042\u308b\u3068\u4f1d\u308f\u308a\u3001\u54c1\u8cea\u3078\u306e\u610f\u8b58\u3082\u5171\u6709\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\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&utm_medium=body_cta&utm_content=cc-bigdecimal-money-risk&blog_slug=cc-bigdecimal-money-risk\" 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&utm_medium=body_cta&utm_campaign=cc-bigdecimal-money-risk&utm_content=body_cta-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\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;\">COMMON MISTAKES<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u3067\u3088\u304f\u3042\u308b\u8a08\u7b97\u30df\u30b9\u306e\u30d1\u30bf\u30fc\u30f3<\/span>\n  <span class=\"section-desc\">\u767a\u6ce8\u8005\u3068\u3057\u3066\u77e5\u3063\u3066\u304a\u304d\u305f\u3044\u300c\u4e8b\u6545\u306e\u5178\u578b\u4f8b\u300d<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f0a\u793e\u304c\u3053\u308c\u307e\u3067\u95a2\u308f\u3063\u3066\u304d\u305f\u30b7\u30b9\u30c6\u30e0\u6539\u4fee\u6848\u4ef6\u306e\u4e2d\u304b\u3089\u3001\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u3067\u5b9f\u969b\u306b\u898b\u3089\u308c\u305f\u8a08\u7b97\u307e\u308f\u308a\u306e\u5178\u578b\u7684\u306a\u554f\u984c\u30d1\u30bf\u30fc\u30f3\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u30d1\u30bf\u30fc\u30f3<\/th><th>\u5185\u5bb9<\/th><th>\u8d77\u304d\u3084\u3059\u3044\u5834\u9762<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u6d6e\u52d5\u5c0f\u6570\u70b9\u3092\u305d\u306e\u307e\u307e\u4f7f\u7528<\/td><td>double\/float\u3067\u91d1\u984d\u3092\u76f4\u63a5\u8a08\u7b97\u3057\u3001\u5fae\u5c0f\u306a\u8aa4\u5dee\u304c\u767a\u751f<\/td><td>\u898b\u7a4d\u30fb\u8acb\u6c42\u30fb\u5728\u5eab\u8a55\u4fa1\u984d\u306e\u8a08\u7b97<\/td><\/tr>\n<tr><td>double\u304b\u3089BigDecimal\u3078\u306e\u8aa4\u5909\u63db<\/td><td>new BigDecimal(double\u5024)\u3067\u751f\u6210\u3057\u8aa4\u5dee\u3092\u5f15\u304d\u7d99\u3050<\/td><td>\u65e2\u5b58\u30b7\u30b9\u30c6\u30e0\u306e\u90e8\u5206\u6539\u4fee\u6642<\/td><\/tr>\n<tr><td>\u4e38\u3081\u51e6\u7406\u306e\u6307\u5b9a\u6f0f\u308c<\/td><td>\u5272\u308a\u7b97\u51e6\u7406\u3067\u6841\u6570\u30fb\u4e38\u3081\u30e2\u30fc\u30c9\u3092\u6307\u5b9a\u305b\u305a\u30a8\u30e9\u30fc\u3084\u60f3\u5b9a\u5916\u306e\u6319\u52d5\u306b\u306a\u308b<\/td><td>\u6d88\u8cbb\u7a0e\u8a08\u7b97\u3001\u6309\u5206\u8a08\u7b97<\/td><\/tr>\n<tr><td>equals\u306b\u3088\u308b\u8aa4\u5224\u5b9a<\/td><td>\u6841\u6570\u9055\u3044\u306e\u540c\u5024\u3092compareTo\u3067\u306a\u304fequals\u3067\u6bd4\u8f03\u3057\u4e0d\u4e00\u81f4\u3068\u5224\u5b9a<\/td><td>\u5728\u5eab\u6570\u91cf\u30fb\u6b8b\u9ad8\u306e\u7a81\u5408\u51e6\u7406<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\">\u5171\u901a\u3057\u3066\u3044\u308b\u306e\u306f\u3001<strong>\u300c\u52d5\u304f\u306b\u306f\u52d5\u304f\u304c\u3001\u7279\u5b9a\u306e\u6761\u4ef6\u4e0b\u3067\u3060\u3051\u8aa4\u5dee\u304c\u8868\u9762\u5316\u3059\u308b\u300d<\/strong>\u3068\u3044\u3046\u70b9\u3067\u3059\u3002\u901a\u5e38\u306e\u30c6\u30b9\u30c8\u3067\u306f\u6c17\u3065\u304b\u308c\u305a\u3001\u672c\u756a\u904b\u7528\u5f8c\u3001\u7279\u5b9a\u306e\u91d1\u984d\u30d1\u30bf\u30fc\u30f3\u3067\u306e\u307f\u554f\u984c\u304c\u767a\u899a\u3059\u308b\u30b1\u30fc\u30b9\u304c\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\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;\">\u300c\u30c6\u30b9\u30c8\u3067\u554f\u984c\u306a\u304b\u3063\u305f\u300d\u306f\u5b89\u5fc3\u6750\u6599\u306b\u306a\u3089\u306a\u3044<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u6d6e\u52d5\u5c0f\u6570\u70b9\u306e\u8aa4\u5dee\u306f\u3001\u7279\u5b9a\u306e\u6570\u5024\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u306e\u307f\u9855\u5728\u5316\u3059\u308b\u3053\u3068\u304c\u591a\u304f\u3001\u9650\u3089\u308c\u305f\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u3067\u306f\u898b\u9003\u3055\u308c\u304c\u3061\u3067\u3059\u3002\u91d1\u984d\u3092\u6271\u3046\u6a5f\u80fd\u306b\u3064\u3044\u3066\u306f\u3001<strong>\u8a2d\u8a08\u6bb5\u968e\u3067BigDecimal\u306e\u4f7f\u7528\u3092\u524d\u63d0\u306b\u3059\u308b<\/strong>\u65b9\u304c\u3001\u5f8c\u304b\u3089\u306e\u30c6\u30b9\u30c8\u3067\u8aa4\u5dee\u3092\u6d17\u3044\u51fa\u3059\u3088\u308a\u78ba\u5b9f\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\">\u300c\u30d0\u30b0\u304c\u51fa\u305f\u3089\u76f4\u305b\u3070\u3044\u3044\u300d\u3068\u3044\u3046\u8003\u3048\u65b9\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u91d1\u984d\u8a08\u7b97\u306e\u30d0\u30b0\u306f\u767a\u899a\u304c\u9045\u308c\u3084\u3059\u304f\u3001\u767a\u899a\u3057\u305f\u6642\u306b\u306f\u3059\u3067\u306b\u8907\u6570\u306e\u8acb\u6c42\u66f8\u3084\u304a\u5ba2\u69d8\u5bfe\u5fdc\u306b\u5f71\u97ff\u304c\u51fa\u3066\u3044\u305f\u3001\u3068\u3044\u3046\u30b1\u30fc\u30b9\u3092\u898b\u3066\u304d\u307e\u3057\u305f\u3002\u8a2d\u8a08\u6bb5\u968e\u3067\u9632\u3050\u65b9\u304c\u5727\u5012\u7684\u306b\u30b3\u30b9\u30c8\u304c\u4f4e\u3044\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">5-1. \u300c\u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0\u300d\u307b\u3069\u30ea\u30b9\u30af\u304c\u6f5c\u307f\u3084\u3059\u3044<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7279\u306b\u6ce8\u610f\u3057\u305f\u3044\u306e\u304c\u3001<strong>\u9577\u5e74\u904b\u7528\u3055\u308c\u3066\u304d\u305f\u65e2\u5b58\u30b7\u30b9\u30c6\u30e0\uff08\u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0\uff09\u306e\u6539\u4fee\u6848\u4ef6<\/strong>\u3067\u3059\u3002\u958b\u767a\u5f53\u521d\u306e\u6280\u8853\u9078\u5b9a\u304c\u53e4\u304f\u3001\u6d6e\u52d5\u5c0f\u6570\u70b9\u3067\u91d1\u984d\u3092\u6271\u3046\u8a2d\u8a08\u306e\u307e\u307e\u5897\u6539\u7bc9\u304c\u7e70\u308a\u8fd4\u3055\u308c\u3066\u3044\u308b\u30b1\u30fc\u30b9\u304c\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u62c5\u5f53\u8005\u304c\u5165\u308c\u66ff\u308f\u308b\u4e2d\u3067\u300c\u306a\u305c\u3053\u306e\u5b9f\u88c5\u306a\u306e\u304b\u300d\u3068\u3044\u3046\u7d4c\u7def\u304c\u5931\u308f\u308c\u3001\u8ab0\u3082\u624b\u3092\u4ed8\u3051\u3089\u308c\u306a\u3044\u307e\u307e\u904b\u7528\u3055\u308c\u7d9a\u3051\u308b\u3053\u3068\u3082\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>\u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0<\/strong>\uff1a\u53e4\u3044\u6280\u8853\u30fb\u8a2d\u8a08\u601d\u60f3\u3067\u69cb\u7bc9\u3055\u308c\u3001\u9577\u671f\u9593\u904b\u7528\u3055\u308c\u7d9a\u3051\u3066\u3044\u308b\u30b7\u30b9\u30c6\u30e0\u306e\u3053\u3068\u3002\u4ed5\u69d8\u66f8\u304c\u5931\u308f\u308c\u3066\u3044\u305f\u308a\u3001\u958b\u767a\u5f53\u6642\u306e\u62c5\u5f53\u8005\u304c\u9000\u8077\u3057\u3066\u3044\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u591a\u304f\u3001\u6539\u4fee\u6642\u306b\u30ea\u30b9\u30af\u304c\u898b\u3048\u306b\u304f\u3044\u3068\u3044\u3046\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3046\u3057\u305f\u30b7\u30b9\u30c6\u30e0\u3092\u6539\u4fee\u3059\u308b\u969b\u306f\u3001<strong>\u300c\u52d5\u3044\u3066\u3044\u308b\u304b\u3089\u89e6\u3089\u306a\u3044\u300d\u3067\u306f\u306a\u304f\u300c\u52d5\u3044\u3066\u3044\u308b\u3046\u3061\u306b\u30ea\u30b9\u30af\u3092\u53ef\u8996\u5316\u3059\u308b\u300d<\/strong>\u3068\u3044\u3046\u767a\u60f3\u306e\u8ee2\u63db\u304c\u91cd\u8981\u3067\u3059\u3002\u6b21\u7ae0\u3067\u7d39\u4ecb\u3059\u308bAI\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u306e\u6d3b\u7528\u306f\u3001\u307e\u3055\u306b\u3053\u306e\u300c\u52d5\u3044\u3066\u3044\u308b\u30b7\u30b9\u30c6\u30e0\u306e\u30ea\u30b9\u30af\u3092\u3001\u58ca\u3055\u305a\u306b\u53ef\u8996\u5316\u3059\u308b\u300d\u7528\u9014\u306b\u5411\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n\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&utm_medium=body_cta&utm_content=cc-bigdecimal-money-risk&blog_slug=cc-bigdecimal-money-risk\" 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&utm_medium=body_cta&utm_campaign=cc-bigdecimal-money-risk&utm_content=body_cta-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\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;\">VENDOR CHECKLIST<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u767a\u6ce8\u6642\u306b\u30c1\u30a7\u30c3\u30af\u3059\u3079\u304d\u30dd\u30a4\u30f3\u30c8 \u65e9\u898b\u8868<\/span>\n  <span class=\"section-desc\">\u5c02\u9580\u77e5\u8b58\u304c\u306a\u304f\u3066\u3082\u805e\u3051\u308b\u8cea\u554f\u30ea\u30b9\u30c8<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u3092\u5916\u6ce8\u3059\u308b\u969b\u3001\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u62c5\u5f53\u8005\u3067\u3082\u6295\u3052\u304b\u3051\u3089\u308c\u308b\u8cea\u554f\u3092\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u78ba\u8a8d\u3057\u305f\u3044\u3053\u3068<\/th><th>\u805e\u304d\u65b9\u306e\u4f8b<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u91d1\u984d\u8a08\u7b97\u306e\u5b9f\u88c5\u65b9\u5f0f<\/td><td>\u300c\u91d1\u984d\u8a08\u7b97\u306b\u306fBigDecimal\u306a\u3069\u8aa4\u5dee\u306e\u51fa\u306a\u3044\u4ed5\u7d44\u307f\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u304b\uff1f\u300d<\/td><\/tr>\n<tr><td>\u4e38\u3081\u51e6\u7406\u306e\u7d71\u4e00<\/td><td>\u300c\u6d88\u8cbb\u7a0e\u30fb\u7aef\u6570\u8a08\u7b97\u306e\u4e38\u3081\u30eb\u30fc\u30eb\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u3067\u7d71\u4e00\u3055\u308c\u3066\u3044\u307e\u3059\u304b\uff1f\u300d<\/td><\/tr>\n<tr><td>\u65e2\u5b58\u30c7\u30fc\u30bf\u3068\u306e\u6574\u5408\u6027<\/td><td>\u300c\u65e2\u5b58\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u79fb\u884c\u3059\u308b\u91d1\u984d\u30c7\u30fc\u30bf\u306e\u6841\u6570\u3084\u4e38\u3081\u65b9\u91dd\u306f\u63c3\u3063\u3066\u3044\u307e\u3059\u304b\uff1f\u300d<\/td><\/tr>\n<tr><td>\u30c6\u30b9\u30c8\u306e\u7bc4\u56f2<\/td><td>\u300c\u91d1\u984d\u8a08\u7b97\u306b\u3064\u3044\u3066\u306f\u3001\u5883\u754c\u5024\uff080.5\u5186\u5358\u4f4d\u7b49\uff09\u3092\u542b\u3081\u305f\u30c6\u30b9\u30c8\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u304b\uff1f\u300d<\/td><\/tr>\n<\/tbody>\n<\/table>\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>\u898b\u7a4d\u66f8\u30fb\u8acb\u6c42\u66f8\u306a\u3069\u300c\u91d1\u984d\u3092\u5370\u5b57\u3059\u308b\u5e33\u7968\u300d\u3092\u6301\u3064\u30b7\u30b9\u30c6\u30e0\u306f\u7279\u306b\u6ce8\u610f\u6df1\u304f\u78ba\u8a8d\u3059\u308b<\/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>\u65e2\u5b58\u30b7\u30b9\u30c6\u30e0\u306e\u30ea\u30d7\u30ec\u30a4\u30b9\u3067\u306f\u300c\u65e7\u30b7\u30b9\u30c6\u30e0\u306e\u4e38\u3081\u30eb\u30fc\u30eb\u300d\u3092\u5f15\u304d\u7d99\u3050\u304b\u5909\u66f4\u3059\u308b\u304b\u3092\u4e8b\u524d\u5408\u610f\u3059\u308b<\/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>\u6d77\u5916\u901a\u8ca8\u3092\u6271\u3046\u5834\u5408\u306f\u3001\u901a\u8ca8\u3054\u3068\u306e\u5c0f\u6570\u70b9\u4ee5\u4e0b\u6841\u6570\uff08\u4f8b: \u5186\u306f0\u6841\u3001\u30c9\u30eb\u306f2\u6841\uff09\u306e\u6271\u3044\u3082\u78ba\u8a8d\u3059\u308b<\/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>\u5951\u7d04\u66f8\u30fb\u898b\u7a4d\u66f8\u30ec\u30d9\u30eb\u3067\u300c\u8a08\u7b97\u7cbe\u5ea6\u306e\u62c5\u4fdd\u300d\u3092\u660e\u8a18\u3067\u304d\u308b\u3068\u3001\u5f8c\u304b\u3089\u306e\u30c8\u30e9\u30d6\u30eb\u3092\u907f\u3051\u3084\u3059\u3044<\/span><\/div>\n\n<\/div>\n\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&utm_medium=body_cta&utm_content=cc-bigdecimal-money-risk&blog_slug=cc-bigdecimal-money-risk\" 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&utm_medium=body_cta&utm_campaign=cc-bigdecimal-money-risk&utm_content=body_cta-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\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;\">GENAI CASE STUDY<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u3010\u72ec\u81ea\u30c7\u30fc\u30bf\u3011GENAI\u793e\u5185\u306e\u30b3\u30fc\u30c9\u54c1\u8cea\u30c1\u30a7\u30c3\u30af\u3001AI\u306b\u3069\u3053\u307e\u3067\u4efb\u305b\u3066\u3044\u308b\u304b<\/span>\n  <span class=\"section-desc\">\u8a08\u7b97\u30ed\u30b8\u30c3\u30af\u306e\u30ea\u30b9\u30af\u3092\u4eba\u9593\u3088\u308a\u65e9\u304f\u898b\u3064\u3051\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u304b\u3089\u306f\u3001\u5f0a\u793e\uff08\u682a\u5f0f\u4f1a\u793eGENAI\uff09\u306e\u5b9f\u904b\u7528\u30c7\u30fc\u30bf\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002\u5f0a\u793e\u3067\u306fClaude Max 20x\u30d7\u30e9\u30f3\uff08\u6708\u984d$200\u30fb\u7d0430,000\u5186\uff09\u3092\u5951\u7d04\u3057\u3001\u7d4c\u55b6\u30fb\u55b6\u696d\u30fb\u5e83\u544a\u30fb\u958b\u767a\u30fb\u7d4c\u7406\u30fb\u79d8\u66f8\u696d\u52d9\u307e\u3067\u5168\u793e\u7684\u306bAI\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u300cClaude Code\u300d\u3092\u6d3b\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u9805\u76ee<\/th><th>\u5185\u5bb9<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u5951\u7d04\u30d7\u30e9\u30f3<\/td><td>Claude Max 20x\uff08\u6708$200 \/ \u7d0430,000\u5186\uff09<\/td><\/tr>\n<tr><td>\u5229\u7528\u958b\u59cb<\/td><td>2025\u5e74\u5f8c\u534a\u301c<\/td><\/tr>\n<tr><td>\u30b3\u30fc\u30c9\u54c1\u8cea\u95a2\u9023\u306e\u7528\u9014<\/td><td>\u91d1\u984d\u8a08\u7b97\u30ed\u30b8\u30c3\u30af\u306e\u30ec\u30d3\u30e5\u30fc\u3001\u4e38\u3081\u51e6\u7406\u306e\u7d71\u4e00\u30c1\u30a7\u30c3\u30af\u3001\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u306e\u6d17\u3044\u51fa\u3057<\/td><\/tr>\n<tr><td>\u62c5\u5f53\u4f53\u5236<\/td><td>\u5c02\u4efbQA\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u65b0\u898f\u306b\u96c7\u308f\u305a\u3001\u65e2\u5b58\u30e1\u30f3\u30d0\u30fc\uff0bClaude Code\u3067\u30ec\u30d3\u30e5\u30fc\u4f53\u5236\u3092\u69cb\u7bc9<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u8a18\u4e8b\u3067\u6271\u3063\u305f<strong>\u300c\u6d6e\u52d5\u5c0f\u6570\u70b9\u3092\u305d\u306e\u307e\u307e\u91d1\u984d\u8a08\u7b97\u306b\u4f7f\u3063\u3066\u3044\u306a\u3044\u304b\u300d\u3068\u3044\u3046\u30c1\u30a7\u30c3\u30af\u306f\u3001\u5b9f\u306fAI\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u304c\u5f97\u610f\u3068\u3059\u308b\u9818\u57df<\/strong>\u3067\u3059\u3002\u30b3\u30fc\u30c9\u5168\u4f53\u3092\u6a2a\u65ad\u7684\u306b\u8aad\u307f\u8fbc\u307f\u3001\u300cdouble\u3084float\u3092\u91d1\u984d\u3089\u3057\u304d\u5909\u6570\u306b\u4f7f\u3063\u3066\u3044\u308b\u7b87\u6240\u300d\u3092\u30d1\u30bf\u30fc\u30f3\u3068\u3057\u3066\u691c\u51fa\u3059\u308b\u4f5c\u696d\u306f\u3001\u4eba\u9593\u304c\u76ee\u8996\u30671\u884c\u305a\u3064\u8ffd\u3046\u3088\u308a\u3001AI\u304c\u9ad8\u901f\u306b\u30b9\u30ad\u30e3\u30f3\u3059\u308b\u65b9\u304c\u5411\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"g-flow-row\" style=\"margin:24px 0;\">\n  <div class=\"g-flow-item\"><strong>Step 1<\/strong><br><span style=\"font-size:12px;\">\u300c\u91d1\u984d\u8a08\u7b97\u306e<br>\u30ea\u30b9\u30af\u3092<br>\u6d17\u3044\u51fa\u3057\u3066\u300d<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>Step 2<\/strong><br><span style=\"font-size:12px;\">Claude Code\u304c<br>\u8a72\u5f53\u30b3\u30fc\u30c9\u3092<br>\u6a2a\u65ad\u30b9\u30ad\u30e3\u30f3<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>Step 3<\/strong><br><span style=\"font-size:12px;\">\u7591\u308f\u3057\u3044\u7b87\u6240\u3092<br>\u4e00\u89a7\u5316<br>\u3057\u3066\u5831\u544a<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>Step 4<\/strong><br><span style=\"font-size:12px;\">\u4eba\u9593\u304c<br>\u512a\u5148\u5ea6\u3092\u3064\u3051\u3066<br>\u9806\u6b21\u5bfe\u5fdc<\/span><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u4f53\u5236\u306b\u3088\u308a\u3001<strong>\u300c\u52d5\u3044\u3066\u3044\u308b\u304c\u5c06\u6765\u554f\u984c\u306b\u306a\u308a\u3046\u308b\u7b87\u6240\u300d\u3092\u3001\u554f\u984c\u304c\u8868\u9762\u5316\u3059\u308b\u524d\u306b\u6d17\u3044\u51fa\u3059<\/strong>\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3082\u3061\u308d\u3093\u6700\u7d42\u7684\u306a\u4fee\u6b63\u306e\u8981\u5426\u5224\u65ad\u306f\u4eba\u9593\u304c\u884c\u3044\u307e\u3059\u304c\u3001\u300c\u3069\u3053\u306b\u30ea\u30b9\u30af\u304c\u3042\u308b\u304b\u300d\u3092\u63a2\u3059\u521d\u671f\u5de5\u7a0b\u3092AI\u304c\u62c5\u3046\u3053\u3068\u3067\u3001\u30ec\u30d3\u30e5\u30fc\u306b\u304b\u304b\u308b\u6642\u9593\u3092\u5927\u5e45\u306b\u5727\u7e2e\u3067\u304d\u3066\u3044\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\">\u4ee5\u524d\u306f\u300c\u5927\u304d\u306a\u4e0d\u5177\u5408\u304c\u51fa\u3066\u304b\u3089\u76f4\u3059\u300d\u3068\u3044\u3046\u5f8c\u624b\u306e\u5bfe\u5fdc\u304c\u591a\u304b\u3063\u305f\u306e\u3067\u3059\u304c\u3001Claude Code\u3092\u4f7f\u3044\u59cb\u3081\u3066\u304b\u3089\u306f\u300c\u8868\u9762\u5316\u3059\u308b\u524d\u306b\u30ea\u30b9\u30af\u3092\u6d17\u3044\u51fa\u3059\u300d\u3068\u3044\u3046\u5148\u624b\u306e\u54c1\u8cea\u7ba1\u7406\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u7d4c\u55b6\u8005\u3068\u3057\u3066\u3082\u5b89\u5fc3\u6750\u6599\u306b\u306a\u3063\u3066\u3044\u307e\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\">\u5f0a\u793e\u304c\u958b\u767a\u3092\u8acb\u3051\u8ca0\u3046\u6848\u4ef6\u3067\u3082\u3001\u7d0d\u54c1\u524d\u306e\u6700\u7d42\u30c1\u30a7\u30c3\u30af\u5de5\u7a0b\u306bClaude Code\u306b\u3088\u308b\u6a2a\u65ad\u30ec\u30d3\u30e5\u30fc\u3092\u7d44\u307f\u8fbc\u3093\u3067\u3044\u307e\u3059\u3002\u4eba\u9593\u306e\u30ec\u30d3\u30e5\u30fc\u3067\u306f\u898b\u843d\u3068\u3057\u304c\u3061\u306a\u300c\u91d1\u984d\u8a08\u7b97\u307e\u308f\u308a\u306e\u304a\u4f5c\u6cd5\u300d\u3092\u6a5f\u68b0\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3067\u304d\u308b\u306e\u306f\u5927\u304d\u306a\u5b89\u5fc3\u6750\u6599\u3067\u3059\u3002<\/div>\n<\/div>\n\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&utm_medium=body_cta&utm_content=cc-bigdecimal-money-risk&blog_slug=cc-bigdecimal-money-risk\" 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&utm_medium=body_cta&utm_campaign=cc-bigdecimal-money-risk&utm_content=body_cta-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\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;\">FOR NON-ENGINEERS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u3010\u72ec\u81ea\u3011\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u3067\u3082\u8a08\u7b97\u30ea\u30b9\u30af\u3092AI\u3067\u30c1\u30a7\u30c3\u30af\u3059\u308b3\u30b9\u30c6\u30c3\u30d7<\/span>\n  <span class=\"section-desc\">\u30b3\u30fc\u30c9\u304c\u8aad\u3081\u306a\u304f\u3066\u3082\u54c1\u8cea\u78ba\u8a8d\u306b\u53c2\u52a0\u3067\u304d\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c\u30b3\u30fc\u30c9\u306a\u3093\u3066\u8aad\u3081\u306a\u3044\u3057\u3001\u54c1\u8cea\u30c1\u30a7\u30c3\u30af\u306b\u306f\u95a2\u308f\u308c\u306a\u3044\u300d\u3068\u601d\u308f\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u3001AI\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u3092\u9593\u306b\u631f\u3080\u3053\u3068\u3067\u3001\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u3067\u3082\u54c1\u8cea\u78ba\u8a8d\u306e\u30d7\u30ed\u30bb\u30b9\u306b\u53c2\u52a0\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">8-1. \u30b9\u30c6\u30c3\u30d71\uff1a\u6c17\u306b\u306a\u308b\u7b87\u6240\u3092\u8a00\u8449\u3067\u4f1d\u3048\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c\u8acb\u6c42\u91d1\u984d\u306e\u8a08\u7b97\u30ed\u30b8\u30c3\u30af\u306b\u554f\u984c\u304c\u306a\u3044\u304b\u78ba\u8a8d\u3057\u305f\u3044\u300d\u300c\u6d88\u8cbb\u7a0e\u306e\u7aef\u6570\u51e6\u7406\u304c\u7d71\u4e00\u3055\u308c\u3066\u3044\u308b\u304b\u5fc3\u914d\u300d\u3068\u3044\u3063\u305f\u3001\u696d\u52d9\u4e0a\u306e\u61f8\u5ff5\u70b9\u3092\u8a00\u8449\u3067\u4f1d\u3048\u308b\u3068\u3053\u308d\u304b\u3089\u59cb\u3081\u307e\u3059\u3002\u5c02\u9580\u7528\u8a9e\u3092\u77e5\u3063\u3066\u3044\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">8-2. \u30b9\u30c6\u30c3\u30d72\uff1aClaude Code\u306b\u30b3\u30fc\u30c9\u3092\u6a2a\u65ad\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3082\u3089\u3046<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Claude Code\u306e\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u7248\u3092\u4f7f\u3048\u3070\u3001\u30bf\u30fc\u30df\u30ca\u30eb\uff08\u9ed2\u3044\u753b\u9762\uff09\u3092\u958b\u304b\u305a\u306b\u3001\u30c1\u30e3\u30c3\u30c8\u5f62\u5f0f\u3067\u300c\u91d1\u984d\u8a08\u7b97\u306e\u30ea\u30b9\u30af\u3092\u6d17\u3044\u51fa\u3057\u3066\u300d\u3068\u6307\u793a\u3067\u304d\u307e\u3059\u3002AI\u304c\u30b3\u30fc\u30c9\u5168\u4f53\u3092\u89e3\u6790\u3057\u3001\u30ea\u30b9\u30af\u306e\u3042\u308a\u305d\u3046\u306a\u7b87\u6240\u3092\u65e5\u672c\u8a9e\u3067\u5831\u544a\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">8-3. \u30b9\u30c6\u30c3\u30d73\uff1a\u5831\u544a\u5185\u5bb9\u3092\u3082\u3068\u306b\u512a\u5148\u9806\u4f4d\u3092\u3064\u3051\u3066\u4f9d\u983c\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">AI\u304c\u6d17\u3044\u51fa\u3057\u305f\u30ea\u30b9\u30af\u4e00\u89a7\u3092\u3082\u3068\u306b\u3001<strong>\u300c\u3069\u3053\u304b\u3089\u76f4\u3059\u3079\u304d\u304b\u300d\u306e\u512a\u5148\u9806\u4f4d\u3092\u7d4c\u55b6\u5224\u65ad\u3068\u3057\u3066\u6c7a\u3081\u308b<\/strong>\u306e\u304c\u3001\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u62c5\u5f53\u8005\u306b\u3068\u3063\u3066\u6700\u3082\u4fa1\u5024\u306e\u3042\u308b\u95a2\u308f\u308a\u65b9\u3067\u3059\u3002\u6280\u8853\u7684\u306a\u4fee\u6b63\u81ea\u4f53\u306f\u30a8\u30f3\u30b8\u30cb\u30a2\u3084AI\u304c\u62c5\u3044\u3001\u300c\u4f55\u3092\u512a\u5148\u3059\u308b\u304b\u300d\u3068\u3044\u3046\u696d\u52d9\u5224\u65ad\u306f\u4eba\u9593\u304c\u62c5\u3046\u3001\u3068\u3044\u3046\u5f79\u5272\u5206\u62c5\u304c\u73fe\u5b9f\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"g-flow-row\" style=\"margin:24px 0;\">\n  <div class=\"g-flow-item\"><strong>\u61f8\u5ff5\u70b9\u3092<br>\u8a00\u8449\u3067\u4f1d\u3048\u308b<\/strong><br><span style=\"font-size:12px;\">\u5c02\u9580\u77e5\u8b58<br>\u4e0d\u8981<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>Claude Code\u304c<br>\u6a2a\u65ad\u30c1\u30a7\u30c3\u30af<\/strong><br><span style=\"font-size:12px;\">\u65e5\u672c\u8a9e\u3067<br>\u30ea\u30b9\u30af\u5831\u544a<\/span><\/div>\n  <div class=\"g-flow-arrow\">&#8594;<\/div>\n  <div class=\"g-flow-item\"><strong>\u512a\u5148\u9806\u4f4d\u3092<br>\u7d4c\u55b6\u5224\u65ad<\/strong><br><span style=\"font-size:12px;\">\u3069\u3053\u304b\u3089<br>\u76f4\u3059\u304b\u6c7a\u3081\u308b<\/span><\/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;\">\u5c0f\u3055\u306a\u4f1a\u793e\u307b\u3069\u52b9\u679c\u304c\u5927\u304d\u3044<\/strong>\n  <\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u5c02\u4efb\u306eQA\u30a8\u30f3\u30b8\u30cb\u30a2\u3084\u30c6\u30b9\u30bf\u30fc\u3092\u96c7\u3046\u4f59\u88d5\u304c\u306a\u3044\u4e2d\u5c0f\u4f01\u696d\u307b\u3069\u3001AI\u306b\u3088\u308b\u6a2a\u65ad\u30c1\u30a7\u30c3\u30af\u306e\u6069\u6075\u306f\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002\u300c\u54c1\u8cea\u30c1\u30a7\u30c3\u30af\u306e\u305f\u3081\u306b\u4eba\u30921\u4eba\u96c7\u3046\u300d\u4ee3\u308f\u308a\u306b\u3001\u300cAI\u306b\u7d99\u7d9a\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3055\u305b\u308b\u300d\u3068\u3044\u3046\u9078\u629e\u80a2\u304c\u73fe\u5b9f\u7684\u306b\u306a\u3063\u3066\u304d\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">8-4. \u300c\u5b9a\u671f\u5065\u8a3a\u300d\u3068\u3057\u3066\u7d99\u7d9a\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3082\u30461\u3064\u6709\u52b9\u306a\u306e\u304c\u3001<strong>\u54c1\u8cea\u30c1\u30a7\u30c3\u30af\u3092\u4e00\u5ea6\u304d\u308a\u306e\u30a4\u30d9\u30f3\u30c8\u3067\u306f\u306a\u304f\u3001\u5b9a\u671f\u7684\u306a\u300c\u5065\u8a3a\u300d\u3068\u3057\u3066\u4ed5\u7d44\u307f\u5316\u3059\u308b<\/strong>\u3068\u3044\u3046\u8003\u3048\u65b9\u3067\u3059\u3002\u4eba\u9593\u30c9\u30c3\u30af\u306e\u3088\u3046\u306b\u3001\u5b9a\u671f\u7684\u306b\u30b3\u30fc\u30c9\u5168\u4f53\u3092AI\u306b\u30b9\u30ad\u30e3\u30f3\u3055\u305b\u308b\u3053\u3068\u3067\u3001\u6a5f\u80fd\u8ffd\u52a0\u306e\u305f\u3073\u306b\u65b0\u3057\u3044\u30ea\u30b9\u30af\u304c\u7d1b\u308c\u8fbc\u3093\u3067\u3044\u306a\u3044\u304b\u3092\u7d99\u7d9a\u7684\u306b\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f0a\u793e\u3067\u306f\u3001\u6708\u6b21\u306e\u68da\u5378\u3057\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u4e3b\u8981\u306a\u30b7\u30b9\u30c6\u30e0\u306e\u30b3\u30fc\u30c9\u3092Claude Code\u306b\u6a2a\u65ad\u30c1\u30a7\u30c3\u30af\u3055\u305b\u308b\u904b\u7528\u3092\u53d6\u308a\u5165\u308c\u3066\u3044\u307e\u3059\u3002<strong>\u300c\u554f\u984c\u304c\u8d77\u304d\u3066\u304b\u3089\u8abf\u3079\u308b\u300d\u306e\u3067\u306f\u306a\u304f\u300c\u554f\u984c\u304c\u8d77\u304d\u308b\u524d\u306b\u5b9a\u671f\u7684\u306b\u78ba\u8a8d\u3059\u308b\u300d<\/strong>\u3068\u3044\u3046\u767a\u60f3\u3078\u306e\u8ee2\u63db\u306f\u3001\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u7d4c\u55b6\u5224\u65ad\u3068\u3057\u3066\u3082\u5341\u5206\u306b\u5b9f\u884c\u53ef\u80fd\u3067\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>\u67081\u56de\u306a\u3069\u983b\u5ea6\u3092\u6c7a\u3081\u3066\u3001\u4e3b\u8981\u30b7\u30b9\u30c6\u30e0\u306e\u30b3\u30fc\u30c9\u3092AI\u306b\u6a2a\u65ad\u30c1\u30a7\u30c3\u30af\u3055\u305b\u308b<\/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>\u30c1\u30a7\u30c3\u30af\u7d50\u679c\u306f\u300c\u7dca\u6025\u5ea6\u300d\u300c\u5f71\u97ff\u7bc4\u56f2\u300d\u3067\u4ed5\u5206\u3051\u3057\u3001\u5168\u3066\u3092\u4e00\u5ea6\u306b\u76f4\u305d\u3046\u3068\u3057\u306a\u3044<\/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>\u904e\u53bb\u306e\u30c1\u30a7\u30c3\u30af\u7d50\u679c\u3092\u8a18\u9332\u3057\u3066\u304a\u304d\u3001\u540c\u3058\u6307\u6458\u304c\u7e70\u308a\u8fd4\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u50be\u5411\u3092\u898b\u308b<\/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>\u5b9a\u671f\u30c1\u30a7\u30c3\u30af\u306e\u7d50\u679c\u306f\u7d4c\u55b6\u4f1a\u8b70\u306a\u3069\u3001\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u3082\u540c\u5e2d\u3059\u308b\u5834\u3067\u7c21\u6f54\u306b\u5171\u6709\u3059\u308b<\/span><\/div>\n\n<\/div>\n\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&utm_medium=body_cta&utm_content=cc-bigdecimal-money-risk&blog_slug=cc-bigdecimal-money-risk\" 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&utm_medium=body_cta&utm_campaign=cc-bigdecimal-money-risk&utm_content=body_cta-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\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;\">CONCLUSION<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u307e\u3068\u3081 \u2500\u2500 \u300c1\u5186\u306e\u30ba\u30ec\u300d\u3092\u7d4c\u55b6\u3068\u3057\u3066\u7ba1\u7406\u3059\u308b<\/span>\n  <span class=\"section-desc\">\u6280\u8853\u306e\u8a73\u7d30\u3092\u77e5\u3089\u306a\u304f\u3066\u3082\u3001\u30ea\u30b9\u30af\u306f\u7ba1\u7406\u3067\u304d\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u8a08\u7b97\u306b\u8aa4\u5dee\u304c\u751f\u307e\u308c\u308b\u539f\u7406\uff08\u6d6e\u52d5\u5c0f\u6570\u70b9\uff09\u3001Java\u3067\u4f7f\u308f\u308c\u308bBigDecimal\u3068\u3044\u3046\u5bfe\u7b56\u3001\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u3067\u3088\u304f\u3042\u308b\u8a08\u7b97\u30df\u30b9\u306e\u30d1\u30bf\u30fc\u30f3\u3001\u767a\u6ce8\u6642\u306e\u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c8\u3001\u305d\u3057\u3066\u5f0a\u793eGENAI\u304cAI\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u300cClaude Code\u300d\u3092\u4f7f\u3063\u3066\u3053\u3046\u3057\u305f\u8a08\u7b97\u30ed\u30b8\u30c3\u30af\u306e\u30ea\u30b9\u30af\u3092\u3069\u3046\u6d17\u3044\u51fa\u3057\u3066\u3044\u308b\u304b\u3092\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002\u6700\u5f8c\u306b\u30dd\u30a4\u30f3\u30c8\u3092\u632f\u308a\u8fd4\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>\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\uff08double\/float\uff09\u306f10\u9032\u6570\u306e\u5c0f\u6570\u3092\u6b63\u78ba\u306b\u8868\u73fe\u3067\u304d\u305a\u3001\u91d1\u984d\u8a08\u7b97\u3067\u306f\u8aa4\u5dee\u306e\u539f\u56e0\u306b\u306a\u308b<\/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>BigDecimal\u306f\u8aa4\u5dee\u306a\u304f10\u9032\u6570\u306e\u8a08\u7b97\u3092\u884c\u3048\u308bJava\u306e\u6a19\u6e96\u30af\u30e9\u30b9\u3067\u3001\u91d1\u984d\u8a08\u7b97\u306e\u5b9a\u77f3<\/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>double\u304b\u3089\u76f4\u63a5BigDecimal\u3092\u751f\u6210\u3059\u308b\u3068\u8aa4\u5dee\u3092\u5f15\u304d\u7d99\u3050\u305f\u3081\u3001\u6587\u5b57\u5217\u304b\u3089\u751f\u6210\u3059\u308b\u306e\u304c\u5b89\u5168<\/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>\u6570\u5024\u306e\u6bd4\u8f03\u306fequals\u3067\u306f\u306a\u304fcompareTo\u3092\u4f7f\u3046\u306e\u304c\u5b9a\u77f3<\/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>\u767a\u6ce8\u6642\u306b\u300c\u91d1\u984d\u8a08\u7b97\u306bBigDecimal\u76f8\u5f53\u306e\u4ed5\u7d44\u307f\u3092\u4f7f\u3063\u3066\u3044\u308b\u304b\u300d\u3092\u78ba\u8a8d\u3059\u308b\u3060\u3051\u3067\u30ea\u30b9\u30af\u3092\u5927\u304d\u304f\u4e0b\u3052\u3089\u308c\u308b<\/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>\u5f0a\u793eGENAI\u3067\u306f\u3001\u8a08\u7b97\u30ed\u30b8\u30c3\u30af\u306e\u30ea\u30b9\u30af\u6d17\u3044\u51fa\u3057\u3068\u3044\u3046\u5730\u5473\u3060\u304c\u91cd\u8981\u306a\u5de5\u7a0b\u3092Claude Code\u306b\u4efb\u305b\u3066\u3044\u308b<\/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>\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u3067\u3082\u300c\u61f8\u5ff5\u3092\u8a00\u8449\u3067\u4f1d\u3048\u308b\u2192AI\u304c\u6a2a\u65ad\u30c1\u30a7\u30c3\u30af\u2192\u512a\u5148\u9806\u4f4d\u3092\u7d4c\u55b6\u5224\u65ad\u300d\u306e3\u30b9\u30c6\u30c3\u30d7\u3067\u54c1\u8cea\u7ba1\u7406\u306b\u95a2\u308f\u308c\u308b<\/span><\/div>\n\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c1\u5186\u306e\u30ba\u30ec\u300d\u306f\u4e9b\u7d30\u306a\u8a71\u306b\u898b\u3048\u3066\u3001\u7a81\u304d\u8a70\u3081\u308b\u3068<strong>\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304c\u6570\u5024\u3092\u3069\u3046\u6271\u3046\u304b\u3068\u3044\u3046\u6839\u672c\u7684\u306a\u4ed5\u7d44\u307f<\/strong>\u306b\u884c\u304d\u7740\u304d\u307e\u3059\u3002\u6280\u8853\u306e\u8a73\u7d30\u3092\u5168\u3066\u7406\u89e3\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u300c\u306a\u305c\u305d\u308c\u304c\u8d77\u304d\u308b\u306e\u304b\u300d\u3092\u77e5\u3063\u3066\u3044\u308b\u3060\u3051\u3067\u3001\u767a\u6ce8\u6642\u306e\u8cea\u554f\u306e\u8cea\u3082\u3001\u30c8\u30e9\u30d6\u30eb\u767a\u751f\u6642\u306e\u521d\u52d5\u5bfe\u5fdc\u3082\u5927\u304d\u304f\u5909\u308f\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7279\u306b\u3001\u3053\u308c\u304b\u3089\u65b0\u3057\u3044\u30b7\u30b9\u30c6\u30e0\u3092\u767a\u6ce8\u3059\u308b\u7d4c\u55b6\u8005\u30fb\u7ba1\u7406\u8077\u306e\u65b9\u306b\u3068\u3063\u3066\u306f\u3001<strong>\u300cBigDecimal\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u304b\u300d\u3068\u3044\u3046\u4e00\u8a00\u3092\u767a\u6ce8\u6642\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u52a0\u3048\u308b\u3060\u3051<\/strong>\u3067\u3001\u5c06\u6765\u306e\u624b\u623b\u308a\u30b3\u30b9\u30c8\u3092\u5927\u304d\u304f\u5f15\u304d\u4e0b\u3052\u3089\u308c\u307e\u3059\u3002\u9006\u306b\u3001\u3059\u3067\u306b\u7a3c\u50cd\u3057\u3066\u3044\u308b\u30b7\u30b9\u30c6\u30e0\u3092\u62b1\u3048\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u300c\u4eca\u306e\u3046\u3061\u306b\u30ea\u30b9\u30af\u3092\u53ef\u8996\u5316\u3057\u3066\u304a\u304f\u300d\u3068\u3044\u3046\u5148\u624b\u306e\u59ff\u52e2\u304c\u3001\u5f8c\u306b\u306a\u3063\u3066\u767a\u899a\u3059\u308b\u30c8\u30e9\u30d6\u30eb\u5bfe\u5fdc\u30b3\u30b9\u30c8\u3068\u6bd4\u3079\u3066\u5727\u5012\u7684\u306b\u5b89\u304f\u6e08\u307f\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\">\u5f0a\u793e\u3067\u306f\u300cAI\u9b3c\u7ba1\u7406\u300d\u3068\u3044\u3046\u30b5\u30fc\u30d3\u30b9\u3067\u3001Claude Code\u3092\u4f7f\u3063\u305f\u696d\u52d9\u81ea\u52d5\u5316\u30fb\u30b3\u30fc\u30c9\u54c1\u8cea\u7ba1\u7406\u306e\u4ed5\u7d44\u307f\u3065\u304f\u308a\u3092\u652f\u63f4\u3057\u3066\u3044\u307e\u3059\u3002\u300c\u4eca\u306e\u30b7\u30b9\u30c6\u30e0\u306b\u8a08\u7b97\u30ea\u30b9\u30af\u304c\u306a\u3044\u304b\u4e0d\u5b89\u300d\u3068\u3044\u3046\u65b9\u306f\u3001\u304a\u6c17\u8efd\u306b\u3054\u76f8\u8ac7\u304f\u3060\u3055\u3044\u3002<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c02\u9580\u7684\u306a\u6280\u8853\u7528\u8a9e\u3092\u899a\u3048\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u300c\u306a\u305c\u305d\u308c\u304c\u8d77\u304d\u308b\u306e\u304b\u300d\u3092\u5927\u67a0\u3067\u7406\u89e3\u3057\u3001\u300c\u8ab0\u306b\u3001\u4f55\u3092\u78ba\u8a8d\u3059\u308c\u3070\u3044\u3044\u304b\u300d\u3092\u77e5\u3063\u3066\u3044\u308b\u3060\u3051\u3067\u3001\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u7d4c\u55b6\u8005\u30fb\u7ba1\u7406\u8077\u3067\u3082\u5341\u5206\u306b\u30b7\u30b9\u30c6\u30e0\u306e\u30ea\u30b9\u30af\u7ba1\u7406\u306b\u95a2\u308f\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u300c\u4eca\u306e\u30b7\u30b9\u30c6\u30e0\u3001\u5927\u4e08\u592b\u3060\u308d\u3046\u304b\u300d\u3092\u653e\u7f6e\u3057\u3066\u3044\u307e\u305b\u3093\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u91d1\u984d\u8a08\u7b97\u306e\u30ea\u30b9\u30af\u306e\u3088\u3046\u306a\u898b\u3048\u306b\u304f\u3044\u554f\u984c\u304b\u3089\u3001\u696d\u52d9\u30d7\u30ed\u30bb\u30b9\u5168\u4f53\u306e\u81ea\u52d5\u5316\u307e\u3067\u3002<br>Claude Code\u3092\u4f7f\u3063\u305f\u300c\u81ea\u793e\u3067\u54c1\u8cea\u3092\u898b\u5f35\u308c\u308b\u4f53\u5236\u300d\u306e\u4f5c\u308a\u65b9\u3092\u3001\u5b9f\u4f8b\u30d9\u30fc\u30b9\u3067\u3054\u63d0\u6848\u3057\u307e\u3059\u3002<\/p>\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\">\u300c\u5c02\u4efb\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u3044\u306a\u3044\u304b\u3089\u54c1\u8cea\u30c1\u30a7\u30c3\u30af\u306b\u4e0d\u5b89\u304c\u3042\u308b\u300d\u3068\u3044\u3046\u4f1a\u793e\u307b\u3069\u3001AI\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u306e\u6d3b\u7528\u52b9\u679c\u306f\u5927\u304d\u304f\u51fa\u307e\u3059\u3002\u7121\u6599\u76f8\u8ac7\u3067\u3001\u8cb4\u793e\u30b7\u30b9\u30c6\u30e0\u306e\u30ea\u30b9\u30af\u6d17\u3044\u51fa\u3057\u306e\u9032\u3081\u65b9\u3092\u4e00\u7dd2\u306b\u6574\u7406\u3057\u307e\u3057\u3087\u3046\u3002<\/div>\n<\/div>\n\n\n\n<div style=\"background:#fff;border:2px solid #eee;border-radius:16px;padding:32px 20px;margin:48px 0 16px;\">\n  <p style=\"text-align:center;font-size:13px;font-weight:700;color:#dc2626;letter-spacing:2px;margin:0 0 12px;\">NEXT STEP<\/p>\n  <p style=\"text-align:center;font-size:22px;font-weight:800;line-height:1.5;color:#1a1a1a;margin:0 0 24px;\">\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=\"display:flex;gap:16px;flex-wrap:wrap;justify-content:center;\">\n    <div style=\"flex:1 1 300px;max-width:560px;background:#fafafa;border:1px solid #eee;border-radius:12px;overflow:hidden;display:flex;flex-direction:column;\">\n      <img src=\"https:\/\/genai-ai.co.jp\/img\/flagship-onikanri.png\" alt=\"AI\u9b3c\u7ba1\u7406 \u2014 Claude Code\u5c0e\u5165\u652f\u63f4\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\" loading=\"lazy\" decoding=\"async\" style=\"width:100%;height:auto;aspect-ratio:16\/9;object-fit:cover;display:block;\">\n      <div style=\"padding:20px 20px 24px;display:flex;flex-direction:column;flex:1;\">\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;color:#1a1a1a;margin:0 0 12px;\">AI\u9b3c\u7ba1\u7406<\/p>\n        <p style=\"font-size:14px;color:#555;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;margin-top:auto;\">\n          <a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&utm_medium=article&utm_campaign=cc-bigdecimal-money-risk&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    <div style=\"flex:1 1 300px;max-width:560px;background:#fafafa;border:1px solid #eee;border-radius:12px;overflow:hidden;display:flex;flex-direction:column;\">\n      <img src=\"https:\/\/genai-ai.co.jp\/img\/flagship-aibpo.png\" alt=\"AIBPO by AI\u9b3c\u7ba1\u7406 \u2014 \u5b9a\u578b\u696d\u52d9\u306e\u4e38\u3054\u3068\u4ee3\u884c\" loading=\"lazy\" decoding=\"async\" style=\"width:100%;height:auto;aspect-ratio:16\/9;object-fit:cover;display:block;\">\n      <div style=\"padding:20px 20px 24px;display:flex;flex-direction:column;flex:1;\">\n        <p style=\"font-size:13px;color:#dc2626;font-weight:700;margin:0 0 8px;\">\u696d\u52d9\u3092\u4e38\u3054\u3068\u4efb\u305b\u305f\u3044\u65b9\u3078<\/p>\n        <p style=\"font-size:20px;font-weight:800;color:#1a1a1a;margin:0 0 12px;\">AIBPO by AI\u9b3c\u7ba1\u7406<\/p>\n        <p style=\"font-size:14px;color:#555;margin:0 0 20px;line-height:1.7;\">\u8acb\u6c42\u51e6\u7406\u30fb\u30c7\u30fc\u30bf\u5165\u529b\u30fb\u554f\u3044\u5408\u308f\u305b\u5bfe\u5fdc\u306a\u3069\u306e\u5b9a\u578b\u696d\u52d9\u3092\u3001AI\u00d7\u4eba\u306e\u54c1\u8cea\u7ba1\u7406\u4f53\u5236\u3067\u4e38\u3054\u3068\u4ee3\u884c\u3002\u3044\u307e\u306e\u30b3\u30b9\u30c8\u306e75%\u76ee\u5b89\u3067\u3001\u65e5\u3005\u306f\u6210\u679c\u7269\u3092\u627f\u8a8d\u3059\u308b\u3060\u3051\u3002<\/p>\n        <div style=\"text-align:center;margin-top:auto;\">\n          <a href=\"https:\/\/genai-ai.co.jp\/ai-kanri\/ai-bpo\/?utm_source=blog&utm_medium=article&utm_campaign=cc-bigdecimal-money-risk&utm_content=next-step-cta-bpo\" 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;\">AIBPO\u3092\u8a73\u3057\u304f\u898b\u308b \u2192<\/a>\n        <\/div>\n      <\/div>\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. \u306a\u305cdouble\u578b\u3067\u91d1\u984d\u3092\u8a08\u7b97\u3059\u308b\u3068\u8aa4\u5dee\u304c\u51fa\u308b\u306e\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. double\u306f2\u9032\u6570\u306e\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3067\u6570\u5024\u3092\u8868\u73fe\u3059\u308b\u305f\u3081\u30010.1\u306e\u3088\u3046\u306a10\u9032\u6570\u306e\u5c0f\u6570\u3092\u6b63\u78ba\u306b\u306f\u8868\u73fe\u3067\u304d\u307e\u305b\u3093\u3002\u3053\u306e\u6027\u8cea\u4e0a\u3001\u8907\u6570\u56de\u306e\u52a0\u6e1b\u4e57\u9664\u3092\u7e70\u308a\u8fd4\u3059\u3068\u3001\u3054\u304f\u308f\u305a\u304b\u306a\u8aa4\u5dee\u304c\u84c4\u7a4d\u3057\u3066\u8868\u9762\u5316\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. BigDecimal\u3092\u4f7f\u3048\u3070\u8aa4\u5dee\u306f\u5b8c\u5168\u306b\u30bc\u30ed\u306b\u306a\u308a\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. 10\u9032\u6570\u3068\u3057\u3066\u6b63\u78ba\u306b\u8a08\u7b97\u3055\u308c\u308b\u305f\u3081\u3001double\u306e\u3088\u3046\u306a\u8868\u73fe\u4e0a\u306e\u8aa4\u5dee\u306f\u767a\u751f\u3057\u307e\u305b\u3093\u3002\u305f\u3060\u3057\u5272\u308a\u7b97\u3067\u5272\u308a\u5207\u308c\u306a\u3044\u5834\u5408\u306f\u6841\u6570\uff08\u30b9\u30b1\u30fc\u30eb\uff09\u3068\u4e38\u3081\u30e2\u30fc\u30c9\u306e\u6307\u5b9a\u304c\u5fc5\u8981\u3067\u3001\u305d\u306e\u6307\u5b9a\u5185\u5bb9\u306b\u3088\u3063\u3066\u306f\u56db\u6368\u4e94\u5165\u7b49\u306b\u3088\u308b\u5dee\u7570\u304c\u751f\u3058\u308b\u70b9\u306b\u306f\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. \u3059\u3067\u306b\u7a3c\u50cd\u3057\u3066\u3044\u308b\u30b7\u30b9\u30c6\u30e0\u304cdouble\u3067\u91d1\u984d\u8a08\u7b97\u3092\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u3069\u3046\u3059\u308c\u3070\u3044\u3044\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u307e\u305a\u306f\u5f71\u97ff\u7bc4\u56f2\uff08\u3069\u306e\u6a5f\u80fd\u304c\u3069\u306e\u7a0b\u5ea6\u306e\u91d1\u984d\u3092\u6271\u3063\u3066\u3044\u308b\u304b\uff09\u3092\u6d17\u3044\u51fa\u3057\u3001\u512a\u5148\u5ea6\u306e\u9ad8\u3044\u7b87\u6240\u304b\u3089\u6bb5\u968e\u7684\u306bBigDecimal\u3078\u306e\u7f6e\u304d\u63db\u3048\u3092\u691c\u8a0e\u3059\u308b\u306e\u304c\u73fe\u5b9f\u7684\u3067\u3059\u3002\u5168\u9762\u66f8\u304d\u63db\u3048\u3088\u308a\u3001\u30ea\u30b9\u30af\u306e\u9ad8\u3044\u7b87\u6240\u304b\u3089\u7740\u624b\u3059\u308b\u65b9\u304c\u8cbb\u7528\u5bfe\u52b9\u679c\u304c\u9ad8\u3044\u30b1\u30fc\u30b9\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. Excel\u306e\u91d1\u984d\u8a08\u7b97\u3067\u3082\u540c\u3058\u554f\u984c\u306f\u8d77\u304d\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. Excel\u3082\u5185\u90e8\u7684\u306b\u306f\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3067\u8a08\u7b97\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u7406\u8ad6\u4e0a\u306f\u540c\u69d8\u306e\u8aa4\u5dee\u304c\u8d77\u3053\u308a\u5f97\u307e\u3059\u3002\u305f\u3060\u3057\u8868\u793a\u4e0a\u306e\u4e38\u3081\u3084Excel\u72ec\u81ea\u306e\u88dc\u6b63\u51e6\u7406\u306b\u3088\u308a\u3001\u65e5\u5e38\u7684\u306a\u5229\u7528\u3067\u554f\u984c\u304c\u9855\u5728\u5316\u3059\u308b\u30b1\u30fc\u30b9\u306f\u9650\u5b9a\u7684\u3067\u3059\u3002\u5927\u91cf\u30c7\u30fc\u30bf\u3084\u8907\u96d1\u306a\u8a08\u7b97\u5f0f\u3092\u6271\u3046\u5834\u5408\u306f\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. BigDecimal\u4ee5\u5916\u306b\u91d1\u984d\u8a08\u7b97\u306e\u8aa4\u5dee\u3092\u9632\u3050\u65b9\u6cd5\u306f\u3042\u308a\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u8a00\u8a9e\u306b\u3088\u3063\u3066\u306f\u300c\u91d1\u984d\u3092\u6700\u5c0f\u5358\u4f4d\u306e\u6574\u6570\uff08\u4f8b: \u5186\u306a\u30891\u5186\u5358\u4f4d\u306e\u6574\u6570\uff09\u3067\u6271\u3046\u300d\u3068\u3044\u3046\u8a2d\u8a08\u65b9\u91dd\u3082\u5e83\u304f\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u5c0f\u6570\u3092\u6271\u308f\u305a\u306b\u6e08\u3080\u305f\u3081\u3001\u30b7\u30f3\u30d7\u30eb\u3067\u8aa4\u5dee\u306e\u5fc3\u914d\u304c\u306a\u3044\u65b9\u6cd5\u3068\u3057\u3066\u9078\u3070\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. \u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u62c5\u5f53\u8005\u304c\u3001\u958b\u767a\u4e2d\u306e\u30b7\u30b9\u30c6\u30e0\u306e\u8a08\u7b97\u7cbe\u5ea6\u3092\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5\u306f\u3042\u308a\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u30b3\u30fc\u30c9\u3092\u76f4\u63a5\u8aad\u3081\u306a\u304f\u3066\u3082\u3001Claude Code\u306e\u3088\u3046\u306aAI\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u306b\u300c\u91d1\u984d\u8a08\u7b97\u306e\u30ed\u30b8\u30c3\u30af\u306b\u30ea\u30b9\u30af\u304c\u306a\u3044\u304b\u78ba\u8a8d\u3057\u3066\u300d\u3068\u4f9d\u983c\u3059\u308c\u3070\u3001\u5c02\u9580\u7528\u8a9e\u3092\u565b\u307f\u7815\u3044\u305f\u5831\u544a\u3092\u53d7\u3051\u53d6\u308c\u307e\u3059\u3002\u30a8\u30f3\u30b8\u30cb\u30a2\u3078\u306e\u8cea\u554f\u30ea\u30b9\u30c8\u3092\u4f5c\u308b\u969b\u306b\u3082\u6d3b\u7528\u3067\u304d\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\": \"\u306a\u305cdouble\u578b\u3067\u91d1\u984d\u3092\u8a08\u7b97\u3059\u308b\u3068\u8aa4\u5dee\u304c\u51fa\u308b\u306e\u3067\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"double\u306f2\u9032\u6570\u306e\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3067\u6570\u5024\u3092\u8868\u73fe\u3059\u308b\u305f\u3081\u30010.1\u306e\u3088\u3046\u306a10\u9032\u6570\u306e\u5c0f\u6570\u3092\u6b63\u78ba\u306b\u306f\u8868\u73fe\u3067\u304d\u307e\u305b\u3093\u3002\u3053\u306e\u6027\u8cea\u4e0a\u3001\u8907\u6570\u56de\u306e\u52a0\u6e1b\u4e57\u9664\u3092\u7e70\u308a\u8fd4\u3059\u3068\u3001\u3054\u304f\u308f\u305a\u304b\u306a\u8aa4\u5dee\u304c\u84c4\u7a4d\u3057\u3066\u8868\u9762\u5316\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": 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Code\u3067\u8a08\u7b97\u30ed\u30b8\u30c3\u30af\u306e\u30ea\u30b9\u30af\u3092\u6d17\u3044\u51fa\u3059\u65b9\u6cd5\u3082\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":25857,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"sitemap_hide":"","_veu_custom_css":"","vkexunit_cta_each_option":"","footnotes":"","rank_math_description":"\u30b7\u30b9\u30c6\u30e0\u306e\u91d1\u984d\u8a08\u7b97\u3067\u300c1\u5186\u5408\u308f\u306a\u3044\u300d\u304c\u8d77\u304d\u308b\u672c\u5f53\u306e\u7406\u7531\u3068\u3001Java\u306e BigDecimal \u306b\u3088\u308b\u5bfe\u7b56\u3092\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u5411\u3051\u306b\u89e3\u8aac\u3002\u767a\u6ce8\u6642\u306e\u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c8\u3068\u3001Claude Code\u3067\u8a08\u7b97\u30ed\u30b8\u30c3\u30af\u306e\u30ea\u30b9\u30af\u3092\u6d17\u3044\u51fa\u3059\u65b9\u6cd5\u3082\u7d39\u4ecb\u3057\u307e\u3059\u3002","rank_math_focus_keyword":"BigDecimal 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