{"id":69,"date":"2026-04-11T17:27:37","date_gmt":"2026-04-11T17:27:37","guid":{"rendered":"https:\/\/www.hi-posts.com\/ja\/ooad-inheritance-code-structure-guide\/"},"modified":"2026-04-11T17:27:37","modified_gmt":"2026-04-11T17:27:37","slug":"ooad-inheritance-code-structure-guide","status":"publish","type":"post","link":"https:\/\/www.hi-posts.com\/ja\/ooad-inheritance-code-structure-guide\/","title":{"rendered":"\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u5206\u6790\u3068\u8a2d\u8a08\u306e\u6df1\u6398\u308a\uff1a\u3088\u308a\u826f\u3044\u30b3\u30fc\u30c9\u69cb\u9020\u306e\u305f\u3081\u306e\u7d99\u627f\u306e\u7406\u89e3"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Charcoal sketch infographic explaining Object-Oriented Analysis and Design inheritance concepts: class hierarchy tree with Vehicle superclass and Car\/Truck subclasses, IS-A vs HAS-A relationship examples, five inheritance models (single, multilevel, hierarchical, multiple with diamond problem warning, hybrid), strategic benefits (code reusability, maintainability, encapsulation, polymorphism), anti-pattern risks (over-inheritance, tight coupling, fragile base class), inheritance vs composition comparison table, and practical implementation guidelines following Liskov Substitution Principle\" decoding=\"async\" src=\"https:\/\/www.hi-posts.com\/wp-content\/uploads\/2026\/04\/ooad-inheritance-infographic-charcoal-sketch.jpg\"\/><\/figure>\n<\/div>\n<h2>\ud83d\udcda \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u5206\u6790\u3068\u8a2d\u8a08\u306e\u5165\u9580<\/h2>\n<p>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u5206\u91ce\u306b\u304a\u3044\u3066\u3001\u660e\u78ba\u3055\u3068\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u306f\u6975\u3081\u3066\u91cd\u8981\u3067\u3059\u3002\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u5206\u6790\u3068\u8a2d\u8a08\uff08OOAD\uff09\u306f\u3001\u8907\u96d1\u306a\u30b7\u30b9\u30c6\u30e0\u3092\u7ba1\u7406\u53ef\u80fd\u3067\u76f8\u4e92\u4f5c\u7528\u3059\u308b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u5206\u89e3\u3059\u308b\u305f\u3081\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u3053\u306e\u624b\u6cd5\u306e\u6838\u3068\u306a\u308b\u306e\u306f<strong>\u7d99\u627f<\/strong>\u3067\u3059\u3002\u3053\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u306b\u3088\u308a\u3001\u958b\u767a\u8005\u306f\u65e2\u5b58\u306e\u30af\u30e9\u30b9\u3092\u57fa\u306b\u65b0\u3057\u3044\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3067\u304d\u3001\u73fe\u5b9f\u4e16\u754c\u306e\u95a2\u4fc2\u6027\u3092\u53cd\u6620\u3057\u305f\u968e\u5c64\u69cb\u9020\u3092\u5f62\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u9069\u5207\u306b\u5b9f\u88c5\u3055\u308c\u305f\u5834\u5408\u3001\u7d99\u627f\u306f\u958b\u767a\u30d7\u30ed\u30bb\u30b9\u3092\u30b9\u30e0\u30fc\u30ba\u306b\u3057\u307e\u3059\u3002\u91cd\u8907\u3092\u6e1b\u3089\u3057\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u7570\u306a\u308b\u90e8\u5206\u306b\u308f\u305f\u3063\u3066\u30b3\u30a2\u30ed\u30b8\u30c3\u30af\u304c\u4e00\u8cab\u6027\u3092\u4fdd\u3064\u3053\u3068\u3092\u78ba\u5b9f\u306b\u3057\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u5805\u56fa\u306a\u5206\u6790\u7684\u57fa\u76e4\u306a\u3057\u306b\u3053\u306e\u6982\u5ff5\u3092\u9069\u7528\u3059\u308b\u3068\u3001\u5909\u66f4\u304c\u56f0\u96e3\u306a\u786c\u76f4\u3057\u305f\u69cb\u9020\u306b\u9665\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001OOAD\u306b\u304a\u3051\u308b\u7d99\u627f\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u691c\u8a0e\u3057\u3001\u30b3\u30fc\u30c9\u69cb\u9020\u306b\u3069\u306e\u3088\u3046\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u3001\u9577\u671f\u7684\u306a\u4fdd\u5b88\u6027\u306b\u3069\u306e\u3088\u3046\u306a\u5f71\u97ff\u3092\u53ca\u307c\u3059\u304b\u3092\u5206\u6790\u3057\u307e\u3059\u3002<\/p>\n<h2>\ud83d\udd0d \u7d99\u627f\u306e\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u7d99\u627f\u306e\u6709\u7528\u6027\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u307e\u305a\u30af\u30e9\u30b9\u9593\u306e\u95a2\u4fc2\u3092\u628a\u63e1\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u306f\u3001\u30af\u30e9\u30b9\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u8a2d\u8a08\u56f3\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u7d99\u627f\u306f\u3001\u5b50\u30af\u30e9\u30b9\u304c\u89aa\u30af\u30e9\u30b9\u306e\u5c5e\u6027\u3068\u632f\u308b\u821e\u3044\u3092\u5f15\u304d\u7d99\u3050\u89aa\u5b50\u95a2\u4fc2\u3092\u5c0e\u5165\u3057\u307e\u3059\u3002<\/p>\n<h3>\ud83c\udf33 \u30af\u30e9\u30b9\u968e\u5c64<\/h3>\n<p>\u30af\u30e9\u30b9\u968e\u5c64\u3068\u306f\u3001\u30af\u30e9\u30b9\u304c\u95a2\u4fc2\u6027\u306b\u57fa\u3065\u3044\u3066\u914d\u7f6e\u3055\u308c\u305f\u6728\u69cb\u9020\u3067\u3059\u3002\u6728\u306e\u9802\u70b9\u306b\u306f\u3001\u4e00\u822c\u7684\u307e\u305f\u306f\u62bd\u8c61\u7684\u306a\u30af\u30e9\u30b9\u304c\u901a\u5e38\u914d\u7f6e\u3055\u308c\u3001\u3053\u308c\u3092<strong>\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9<\/strong>\u307e\u305f\u306f<strong>\u30d9\u30fc\u30b9\u30af\u30e9\u30b9<\/strong>\u3068\u547c\u3070\u308c\u307e\u3059\u3002\u305d\u308c\u4ee5\u4e0b\u306e\u30af\u30e9\u30b9\u306f<strong>\u30b5\u30d6\u30af\u30e9\u30b9<\/strong>\u307e\u305f\u306f<strong>\u6d3e\u751f\u30af\u30e9\u30b9<\/strong>.<\/p>\n<ul>\n<li><strong>\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\uff1a<\/strong>\u95a2\u9023\u3059\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u7fa4\u304c\u5171\u6709\u3059\u308b\u5171\u901a\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3059\u308b\u3002<\/li>\n<li><strong>\u30b5\u30d6\u30af\u30e9\u30b9\uff1a<\/strong>\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u304b\u3089\u7d99\u627f\u3059\u308b\u304c\u3001\u72ec\u81ea\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u5b9a\u7fa9\u3057\u305f\u308a\u3001\u65e2\u5b58\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u308b\u3002<\/li>\n<\/ul>\n<p>\u3053\u306e\u968e\u5c64\u69cb\u9020\u306b\u3088\u308a\u8ad6\u7406\u7684\u306a\u30b0\u30eb\u30fc\u30d7\u5316\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u4e00\u822c\u7684\u306a<em>Vehicle<\/em>\u30af\u30e9\u30b9\u306f\u3001<em>\u901f\u5ea6<\/em>\u304a\u3088\u3073<em>\u71c3\u6599\u30bf\u30a4\u30d7<\/em>\u3068\u3044\u3063\u305f\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u5b9a\u7fa9\u3059\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u5177\u4f53\u7684\u306a\u8eca\u4e21\u3068\u3057\u3066<em>Car<\/em> \u307e\u305f\u306f <em>\u30c8\u30e9\u30c3\u30af<\/em> \u3053\u308c\u3089\u306e\u7279\u5fb4\u3092\u7d99\u627f\u3057\u3064\u3064\u3001\u6b21\u306e\u3088\u3046\u306a\u7279\u5b9a\u306e\u6a5f\u80fd\u3092\u8ffd\u52a0\u3059\u308b<em>\u30c9\u30a2\u6570<\/em>.<\/p>\n<h3>\ud83d\udd17 IS-A\u95a2\u4fc2<\/h3>\n<p>\u7d99\u627f\u306f\u57fa\u672c\u7684\u306b<strong>IS-A<\/strong>\u95a2\u4fc2\u3092\u8868\u3059\u3002\u3082\u3057<em>Car<\/em>\u30af\u30e9\u30b9\u304c<em>Vehicle<\/em>\u30af\u30e9\u30b9\u304b\u3089\u7d99\u627f\u3059\u308b\u306a\u3089\u3070\u3001Car\u306f<em>IS-A<\/em>Vehicle\u3067\u3042\u308b\u3002\u3053\u306e\u610f\u5473\u7684\u306a\u30ea\u30f3\u30af\u306f\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306b\u3068\u3063\u3066\u4e0d\u53ef\u6b20\u3067\u3042\u308a\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u89aa\u30bf\u30a4\u30d7\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3068\u3057\u3066\u6271\u3048\u308b\u3088\u3046\u306b\u3059\u308b\u3002<\/p>\n<ul>\n<li><strong>\u771f\u967d\u6027\uff1a<\/strong> \u9ce5\u306f\u52d5\u7269\u3067\u3042\u308b\u3002\uff08\u6709\u52b9\u306a\u7d99\u627f\uff09<\/li>\n<li><strong>\u507d\u967d\u6027\uff1a<\/strong> \u30ab\u30fc\u306f\u30a8\u30f3\u30b8\u30f3\u3067\u3042\u308b\u3002\uff08\u7121\u52b9\u306a\u7d99\u627f \u2013 \u30ab\u30fc\u306f\u30a8\u30f3\u30b8\u30f3\u3092\u6301\u3063\u3066\u3044\u308b\uff09<\/li>\n<\/ul>\n<p>\u3053\u306e\u9055\u3044\u3092\u8a8d\u8b58\u3059\u308b\u3053\u3068\u3067\u69cb\u9020\u4e0a\u306e\u8aa4\u308a\u3092\u9632\u3052\u308b\u3002\u95a2\u4fc2\u304c\u30bf\u30a4\u30d7\u3067\u306f\u306a\u304f\u6240\u6709\u6a29\u3084\u95a2\u9023\u6027\u3067\u3042\u308b\u5834\u5408\u306b\u306f\u3001\u30b3\u30f3\u30dd\u30b8\u30b7\u30e7\u30f3\uff08HAS-A\uff09\u3092\u4f7f\u7528\u3059\u3079\u304d\u3067\u3042\u308b\u3002<\/p>\n<h2>\ud83c\udfd7\ufe0f \u7d99\u627f\u30e2\u30c7\u30eb\u306e\u7a2e\u985e<\/h2>\n<p>\u7570\u306a\u308b\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u7684\u8981\u4ef6\u306b\u306f\u3001\u7570\u306a\u308b\u7d99\u627f\u30d1\u30bf\u30fc\u30f3\u304c\u5fc5\u8981\u3068\u306a\u308b\u3002\u5229\u7528\u53ef\u80fd\u306a\u30e2\u30c7\u30eb\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u7279\u5b9a\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u7bc4\u56f2\u306b\u9069\u3057\u305f\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u9078\u629e\u3057\u3084\u3059\u304f\u306a\u308b\u3002<\/p>\n<h3>1\ufe0f\u20e3 \u5358\u4e00\u7d99\u627f<\/h3>\n<p>\u3053\u308c\u306f\u3001\u30b5\u30d6\u30af\u30e9\u30b9\u304c\u6b63\u78ba\u306b\u4e00\u3064\u306e\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u304b\u3089\u7d99\u627f\u3059\u308b\u6700\u3082\u5358\u7d14\u306a\u5f62\u3067\u3042\u308b\u3002\u660e\u78ba\u3067\u7dda\u5f62\u7684\u306a\u968e\u5c64\u69cb\u9020\u3092\u751f\u307f\u51fa\u3059\u3002<\/p>\n<ul>\n<li><strong>\u9577\u6240\uff1a<\/strong>\u7406\u89e3\u3057\u3084\u3059\u304f\u3001\u8907\u96d1\u6027\u304c\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u3001\u885d\u7a81\u306e\u30ea\u30b9\u30af\u304c\u4f4e\u304f\u306a\u308b\u3002<\/li>\n<li><strong>\u77ed\u6240\uff1a<\/strong>\u67d4\u8edf\u6027\u304c\u9650\u5b9a\u7684\u3067\u3001\u3059\u3079\u3066\u306e\u30cb\u30fc\u30ba\u3092\u30ab\u30d0\u30fc\u3059\u308b\u305f\u3081\u306b\u8907\u6570\u306e\u57fa\u672c\u30af\u30e9\u30b9\u304c\u5fc5\u8981\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002<\/li>\n<\/ul>\n<h3>2\ufe0f\u20e3 \u30de\u30eb\u30c1\u30ec\u30d9\u30eb\u7d99\u627f<\/h3>\n<p>\u3053\u3053\u3067\u306f\u3001\u3042\u308b\u30af\u30e9\u30b9\u304c\u3001\u5225\u306e\u30af\u30e9\u30b9\u304b\u3089\u7d99\u627f\u3057\u3066\u3044\u308b\u30af\u30e9\u30b9\u304b\u3089\u7d99\u627f\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u4f9d\u5b58\u95a2\u4fc2\u306e\u30c1\u30a7\u30fc\u30f3\u304c\u4f5c\u3089\u308c\u308b\u3002<\/p>\n<ul>\n<li><strong>\u69cb\u9020\uff1a<\/strong> \u89aa\u7956\u7236\u6bcd \u2192 \u89aa \u2192 \u5b50\u4f9b\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4f8b\uff1a<\/strong> \u5404\u30ec\u30d9\u30eb\u3067\u7279\u5b9a\u306e\u5236\u7d04\u3092\u8ffd\u52a0\u3059\u308b\u6bb5\u968e\u7684\u306a\u5c02\u9580\u5316\u306b\u6709\u7528\u3002<\/li>\n<\/ul>\n<h3>3\ufe0f\u20e3 \u968e\u5c64\u7684\u7d99\u627f<\/h3>\n<p>\u8907\u6570\u306e\u30b5\u30d6\u30af\u30e9\u30b9\u304c\u5358\u4e00\u306e\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u304b\u3089\u7d99\u627f\u3059\u308b\u3002\u3053\u308c\u306f\u5206\u985e\u306b\u57fa\u3065\u304f\u30b7\u30b9\u30c6\u30e0\u3067\u4e00\u822c\u7684\u3067\u3042\u308b\u3002<\/p>\n<ul>\n<li><strong>\u4f8b\uff1a<\/strong> \u57fa\u5e95\u30af\u30e9\u30b9 <em>Shape<\/em> \u306b\u30b5\u30d6\u30af\u30e9\u30b9 <em>Circle<\/em>, <em>Square<\/em>\u3001\u304a\u3088\u3073 <em>Triangle<\/em>.<\/li>\n<li><strong>\u5229\u70b9\uff1a<\/strong> \u5171\u901a\u306e\u30ed\u30b8\u30c3\u30af\u3092\u57fa\u5e95\u30af\u30e9\u30b9\u306b\u96c6\u7d04\u3059\u308b\u3002<\/li>\n<\/ul>\n<h3>4\ufe0f\u20e3 \u8907\u6570\u7d99\u627f<\/h3>\n<p>\u30af\u30e9\u30b9\u304c\u8907\u6570\u306e\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u304b\u3089\u7d99\u627f\u3059\u308b\u3002\u5f37\u529b\u3067\u306f\u3042\u308b\u304c\u3001\u30e1\u30bd\u30c3\u30c9\u89e3\u6c7a\u306b\u95a2\u3059\u308b\u5927\u304d\u306a\u8907\u96d1\u6027\u3092\u3082\u305f\u3089\u3059\u3002<\/p>\n<ul>\n<li><strong>\u8907\u96d1\u6027\uff1a<\/strong> \u540d\u524d\u306e\u885d\u7a81\u3092\u614e\u91cd\u306b\u6271\u3046\u5fc5\u8981\u304c\u3042\u308b\u3002<\/li>\n<li><strong>\u8a00\u8a9e\u30b5\u30dd\u30fc\u30c8\uff1a<\/strong> \u3059\u3079\u3066\u306e\u8a00\u8a9e\u304c\u3053\u306e\u6a5f\u80fd\u3092\u30cd\u30a4\u30c6\u30a3\u30d6\u306b\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u3002\u305d\u306e\u7406\u7531\u306f <strong>\u30c0\u30a4\u30a2\u30e2\u30f3\u30c9\u554f\u984c<\/strong>.<\/li>\n<\/ul>\n<h3>5\ufe0f\u20e3 \u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\u7d99\u627f<\/h3>\n<p>2\u3064\u4ee5\u4e0a\u306e\u7d99\u627f\u30bf\u30a4\u30d7\u306e\u7d44\u307f\u5408\u308f\u305b\u3002\u3053\u306e\u30e2\u30c7\u30eb\u306f\u3001\u8907\u6570\u7d99\u627f\u306e\u5229\u70b9\u3068\u968e\u5c64\u69cb\u9020\u306e\u660e\u78ba\u3055\u306e\u4e21\u7acb\u3092\u8a66\u307f\u308b\u3002<\/p>\n<h2>\ud83d\udca1 \u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u304a\u3051\u308b\u6226\u7565\u7684\u5229\u70b9<\/h2>\n<p>\u7d99\u627f\u968e\u5c64\u306e\u8a2d\u8a08\u306b\u52aa\u529b\u3092\u6255\u3046\u306e\u306f\u306a\u305c\u304b\uff1f\u5229\u70b9\u306f\u5358\u306a\u308b\u30b3\u30fc\u30c9\u306e\u7e70\u308a\u8fd4\u3057\u3092\u8d85\u3048\u308b\u3002<\/p>\n<h3>\u267b\ufe0f \u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u6027<\/h3>\n<p>\u4e3b\u306a\u52d5\u6a5f\u306f\u518d\u5229\u7528\u6027\u3067\u3059\u3002\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u306b\u30ed\u30b8\u30c3\u30af\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u3001\u305d\u306e\u30ed\u30b8\u30c3\u30af\u306f\u3059\u3079\u3066\u306e\u30b5\u30d6\u30af\u30e9\u30b9\u3067\u518d\u5b9f\u88c5\u305b\u305a\u306b\u5229\u7528\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u30b3\u30fc\u30c9\u884c\u6570\u304c\u6e1b\u5c11\u3057\u3001\u30d0\u30b0\u306e\u767a\u751f\u3059\u308b\u7bc4\u56f2\u3082\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<h3>\ud83d\udee0\ufe0f \u30e1\u30f3\u30c6\u30ca\u30d3\u30ea\u30c6\u30a3<\/h3>\n<p>\u5171\u901a\u306e\u632f\u308b\u821e\u3044\u306b\u5909\u66f4\u304c\u5fc5\u8981\u306a\u5834\u5408\u3001\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u3092\u66f4\u65b0\u3059\u308b\u3053\u3068\u3067\u305d\u306e\u5909\u66f4\u304c\u3059\u3079\u3066\u306e\u30b5\u30d6\u30af\u30e9\u30b9\u306b\u4f1d\u642c\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u96c6\u4e2d\u5316\u306b\u3088\u308a\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u304c\u4e88\u6e2c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>\ud83d\udd12 \u30ab\u30d7\u30bb\u30eb\u5316\u3068\u62bd\u8c61\u5316<\/h3>\n<p>\u7d99\u627f\u306f\u3001\u89aa\u30af\u30e9\u30b9\u306e\u5b9f\u88c5\u8a73\u7d30\u3092\u96a0\u3059\u3053\u3068\u3067\u62bd\u8c61\u5316\u3092\u652f\u63f4\u3057\u307e\u3059\u3002\u30b5\u30d6\u30af\u30e9\u30b9\u306f\u89aa\u30af\u30e9\u30b9\u306e\u516c\u958b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u3084\u308a\u53d6\u308a\u3059\u308b\u305f\u3081\u3001\u5185\u90e8\u30c7\u30fc\u30bf\u304c\u4fdd\u8b77\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3>\ud83e\udde9 \u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306e\u57fa\u76e4<\/h3>\n<p>\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306f\u7d99\u627f\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u5358\u4e00\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304c\u7570\u306a\u308b\u57fa\u76e4\u3068\u306a\u308b\u5f62\u5f0f\uff08\u30c7\u30fc\u30bf\u578b\uff09\u3092\u8868\u73fe\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7570\u306a\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4e00\u8cab\u3057\u3066\u51e6\u7406\u3067\u304d\u308b\u67d4\u8edf\u306a\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u26a0\ufe0f \u30ea\u30b9\u30af\u3068\u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3<\/h2>\n<p>\u7d99\u627f\u306f\u5f37\u529b\u3067\u3059\u304c\u3001\u8aa4\u7528\u3059\u308b\u3068\u30b7\u30b9\u30c6\u30e0\u306e\u54c1\u8cea\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u843d\u3068\u3057\u7a74\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u5229\u70b9\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3068\u540c\u3058\u304f\u3089\u3044\u91cd\u8981\u3067\u3059\u3002<\/p>\n<h3>\ud83d\udeab \u904e\u5270\u306a\u7d99\u627f<\/h3>\n<p>\u6df1\u3044\u968e\u5c64\u69cb\u9020\uff083\u301c4\u6bb5\u968e\u4ee5\u4e0a\uff09\u3092\u4f5c\u6210\u3059\u308b\u3068\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u8106\u5f31\u306b\u306a\u308a\u307e\u3059\u3002\u30d9\u30fc\u30b9\u30af\u30e9\u30b9\u3067\u306e\u5909\u66f4\u304c\u3001\u5168\u4f53\u306e\u30c4\u30ea\u30fc\u306b\u4e88\u671f\u3057\u306a\u3044\u9023\u9396\u53cd\u5fdc\u3092\u5f15\u304d\u8d77\u3053\u3059\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\ud83d\udd17 \u7dca\u5bc6\u306a\u7d50\u5408<\/h3>\n<p>\u30b5\u30d6\u30af\u30e9\u30b9\u306f\u89aa\u30af\u30e9\u30b9\u306b\u7dca\u5bc6\u306b\u7d50\u5408\u3055\u308c\u307e\u3059\u3002\u89aa\u30af\u30e9\u30b9\u304c\u5185\u90e8\u5b9f\u88c5\u3092\u5909\u66f4\u3057\u305f\u5834\u5408\u3001\u516c\u958b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304c\u540c\u3058\u3067\u3042\u3063\u3066\u3082\u3001\u5b50\u30af\u30e9\u30b9\u304c\u7834\u7dbb\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\ud83d\udc0d \u30c0\u30a4\u30a2\u30e2\u30f3\u30c9\u554f\u984c<\/h3>\n<p>\u591a\u91cd\u7d99\u627f\u306b\u304a\u3044\u3066\u3001\u3042\u308b\u30af\u30e9\u30b9\u304c2\u3064\u306e\u30af\u30e9\u30b9\u304b\u3089\u7d99\u627f\u3057\u3001\u305d\u308c\u3089\u306e\u30af\u30e9\u30b9\u304c\u5171\u901a\u306e\u7956\u5148\u304b\u3089\u7d99\u627f\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u3069\u306e\u7956\u5148\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u304b\u304c\u66d6\u6627\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f\u3001\u7279\u5b9a\u306e\u8a00\u8a9e\u6a5f\u80fd\u3084\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<h3>\ud83e\uddf1 \u30d5\u30ec\u30fc\u30b8\u30eb\u30d9\u30fc\u30b9\u30af\u30e9\u30b9<\/h3>\n<p>\u3042\u307e\u308a\u306b\u3082\u8907\u96d1\u3067\u3001\u983b\u7e41\u306b\u5909\u66f4\u3055\u308c\u308b\u30d9\u30fc\u30b9\u30af\u30e9\u30b9\u306f\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u306a\u308a\u307e\u3059\u3002\u30b5\u30d6\u30af\u30e9\u30b9\u306f\u3053\u306e\u30d9\u30fc\u30b9\u30af\u30e9\u30b9\u306e\u5b89\u5b9a\u6027\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002\u30d9\u30fc\u30b9\u30af\u30e9\u30b9\u304c\u5909\u5316\u3059\u308b\u3068\u3001\u5168\u4f53\u306e\u968e\u5c64\u304c\u5f71\u97ff\u3092\u53d7\u3051\u308b\u306e\u3067\u3059\u3002<\/p>\n<h2>\ud83d\udcca \u7d99\u627f vs. \u30b3\u30f3\u30dd\u30b8\u30b7\u30e7\u30f3<\/h2>\n<p>OOAD\u306b\u304a\u3051\u308b\u91cd\u8981\u306a\u6c7a\u5b9a\u306f\u3001\u7d99\u627f\u3068\u30b3\u30f3\u30dd\u30b8\u30b7\u30e7\u30f3\u306e\u9078\u629e\u3067\u3059\u3002\u67d4\u8edf\u6027\u3092\u91cd\u8996\u3059\u308b\u5834\u5408\u3001\u30b3\u30f3\u30dd\u30b8\u30b7\u30e7\u30f3\u304c\u3057\u3070\u3057\u3070\u597d\u307e\u308c\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u7279\u5fb4<\/th>\n<th>\u7d99\u627f<\/th>\n<th>\u30b3\u30f3\u30dd\u30b8\u30b7\u30e7\u30f3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u95a2\u4fc2<\/td>\n<td>IS-A<\/td>\n<td>HAS-A<\/td>\n<\/tr>\n<tr>\n<td>\u67d4\u8edf\u6027<\/td>\n<td>\u4f4e\uff08\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u9759\u7684\uff09<\/td>\n<td>\u9ad8\uff08\u5b9f\u884c\u6642\u52d5\u7684\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u30ab\u30d7\u30bb\u30eb\u5316<\/td>\n<td>\u4f4e\u3044\uff08\u4fdd\u8b77\u3055\u308c\u305f\u30e1\u30f3\u30d0\u30fc\u304c\u983b\u7e41\u306b\u516c\u958b\u3055\u308c\u308b\uff09<\/td>\n<td>\u9ad8\u3044\uff08\u5185\u90e8\u7684\u306a\u8a73\u7d30\u304c\u96a0\u3055\u308c\u3066\u3044\u308b\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u518d\u5229\u7528\u6027<\/td>\n<td>\u632f\u308b\u821e\u3044\u306b\u5bfe\u3057\u3066\u9ad8\u3044\u3001\u72b6\u614b\u306b\u5bfe\u3057\u3066\u4f4e\u3044<\/td>\n<td>\u72b6\u614b\u3068\u632f\u308b\u821e\u3044\u306e\u4e21\u65b9\u306b\u5bfe\u3057\u3066\u9ad8\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u8907\u96d1\u3055<\/td>\n<td>\u6df1\u3055\u306b\u4f34\u3063\u3066\u5897\u52a0\u3059\u308b<\/td>\n<td>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6570\u306b\u4f34\u3063\u3066\u5897\u52a0\u3059\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\uff1a<\/strong>\u95a2\u4fc2\u304c\u53b3\u5bc6\u306b\u300cIS-A\u300d\u3067\u3042\u308b\u5834\u5408\u306b\u7d99\u627f\u3092\u4f7f\u7528\u3059\u308b<em>IS-A<\/em>\u3002\u95a2\u4fc2\u304c\u300cHAS-A\u300d\u3067\u3042\u308b\u5834\u5408\u3001\u307e\u305f\u306f\u632f\u308b\u821e\u3044\u304c\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306b\u30b3\u30f3\u30dd\u30b8\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3059\u308b<em>HAS-A<\/em>\u307e\u305f\u306f\u632f\u308b\u821e\u3044\u304c\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408<\/p>\n<h2>\ud83d\udee0\ufe0f \u5b9f\u88c5\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/h2>\n<p>\u78ba\u7acb\u3055\u308c\u305f\u539f\u5247\u306b\u5f93\u3046\u3053\u3068\u3067\u3001\u7d99\u627f\u69cb\u9020\u304c\u5805\u7262\u306a\u307e\u307e\u4fdd\u305f\u308c\u308b<\/p>\n<h3>1. 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