{"id":3511,"date":"2023-09-05T11:41:00","date_gmt":"2023-09-05T02:41:00","guid":{"rendered":"https:\/\/yorozu.cloudfree.jp\/wordpress\/?p=3511"},"modified":"2024-05-27T18:07:12","modified_gmt":"2024-05-27T09:07:12","slug":"%e3%82%aa%e3%83%96%e3%82%b8%e3%82%a7%e3%82%af%e3%83%88%e6%8c%87%e5%90%91","status":"publish","type":"post","link":"https:\/\/yorozu.cloudfree.jp\/wordpress\/?p=3511","title":{"rendered":"\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411"},"content":{"rendered":"\n

\u30af\u30e9\u30b9\u3068\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u793a\u3057\u3001\u91cd\u8981\u306a\uff13\u5927\u8981\u7d20\u3092\u793a\u3059\u3002<\/p>\n\n\n\n

\uff11\uff0e\u30af\u30e9\u30b9<\/strong><\/h4>\n\n\n\n

\u3000\u30af\u30e9\u30b9\u306f\u300c\u8a2d\u8a08\u56f3\u300d\u3068\u8a00\u308f\u308c
\u3000\u3000\u3000\u62bd\u8c61\u7684\u306a\u300c\u6982\u5ff5\u300d\u3092\u6307\u3059

\u3000\u3000\u3000\u5206\u304b\u3089\u306a\u3044\u8a00\u8449\u3092\u5206\u304b\u3089\u306a\u3044\u8a00\u8449\u3067\u8aac\u660e\u3055\u308c\u3066\u3082\u7406\u89e3\u3067\u304d\u306a\u3044
\u3000\u3000\u3000\u300c\u4ed5\u69d8\u66f8\u300d\u3001\u300c\u8aac\u660e\u66f8\u300d\u3068\u8aad\u307f\u66ff\u3048\u3066\u307f\u308b
\u3000\u30af\u30e9\u30b9\u306f\u300c\u8a2d\u8a08\u56f3\u300d\u3068\u8a00\u308f\u308c
\u3000\u3000\u3000\u62bd\u8c61\u7684\u306a\u300c\u6982\u5ff5\u300d\u3092\u6307\u3059

\u3000\u3000\u3000\u5206\u304b\u3089\u306a\u3044\u8a00\u8449\u3092\u5206\u304b\u3089\u306a\u3044\u8a00\u8449\u3067\u8aac\u660e\u3055\u308c\u3066\u3082\u7406\u89e3\u3067\u304d\u306a\u3044
\u3000\u3000\u3000\u300c\u4ed5\u69d8\u66f8\u300d\u3001\u300c\u8aac\u660e\u66f8\u300d\u3068\u8aad\u307f\u66ff\u3048\u3066\u307f\u308b

\u3000\u30af\u30e9\u30b9\u306e\u4f8b\u3092\uff12\u3064\u6319\u3052\u308b\uff08House\u3001Human\uff09<\/p>\n\n\n\n

class House {\n    \/\/ \u5c5e\u6027\n    String layout;   \/\/ \u9593\u53d6\u308a\n    int floors;      \/\/ \u968e\u5c64\n    String wallColor; \/\/ \u58c1\u306e\u8272\n    String construction; \/\/ \u9020\u308a\n\n    \/\/ \u5404\u7a2e\u30e1\u30bd\u30c3\u30c9\u304c\u3053\u3053\u3078\n}\n\nclass Human {\n    \/\/ \u5c5e\u6027\n    String name;   \/\/ \u6c0f\u540d\n    int age;      \/\/ \u5e74\u9f62\n    String gender; \/\/ \u6027\u5225\n    \n    \/\/ \u5404\u7a2e\u30e1\u30bd\u30c3\u30c9\u304c\u3053\u3053\u3078\n}<\/code><\/pre><\/div>\n\n\n\n
\uff12\uff0e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9<\/strong><\/h4>\n\n\n\n
\u3000\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306f\u300c\u5b9f\u4f53\u300d\u3068\u8a00\u308f\u308c
\u3000\u3000\u3000\u5177\u4f53\u7684\u306a\u300c\u30e2\u30ce\u300d\u3092\u6307\u3059

\u3000\u3000\u3000\u5206\u304b\u3089\u306a\u3044\u8a00\u8449\u3092\u5206\u304b\u3089\u306a\u3044\u8a00\u8449\u3067\u8aac\u660e\u3055\u308c\u3066\u3082\u7406\u89e3\u3067\u304d\u306a\u3044
\u3000\u3000\u3000\u300c\u30c7\u30fc\u30bf\u300d\u3001\u300c\u30d7\u30ed\u30b0\u30e9\u30e0\u300d\u3068\u8aad\u307f\u66ff\u3048\u3066\u307f\u308b

\u3000\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u4f8b\u3092\uff12\u3064\u6319\u3052\u308b\uff08House\u3001Human\uff09<\/p>\n\n\n\n
House\n\u9593\u53d6\u308a:2LDK\n\u968e\u5c64:2\u968e\u5efa\u3066\n\u58c1\u306e\u8272:\u767d\u7cfb\u7d71\n\u9020\u308a:\u9244\u7b4b\u30b3\u30f3\u30af\u30ea\u30fc\u30c8\u9020\n\n\nHuman\n\u5c71\u7530\u3055\u3093\uff0823\u6b73\u7537\u6027\uff09\n\u7530\u4e2d\u3055\u3093\uff0850\u6b73\u5973\u6027\uff09\n\u4f50\u85e4\u3055\u3093\uff082\u6b73\u7537\u306e\u5b50\uff09<\/code><\/pre><\/div>\n\n\n\n
\uff13\uff0e\u7d99\u627f<\/strong><\/h4>\n\n\n\n
\u3000\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u601d\u8003\u306e\uff11\uff0f\uff13\u306e\u8981\u7d20
\u3000\u3000\u3000\u3042\u308b\u30af\u30e9\u30b9\u3092\u5f15\u304d\u7d99\u3044\u3067\u3001\u65b0\u3057\u3044\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068

\u3000\u7d99\u627f\u306e\u4f8b
\u3000\u3000\u3000\u5e95\u8fba\u3068\u9ad8\u3055\u306e2\u3064\u306e\u5c5e\u6027\u3092\u6301\u3064\u56f3\u5f62
\u3000\u3000\u3000Figure\u30af\u30e9\u30b9\u3092\u793a\u3059
\u3000\u3000\u3000\u3000\u3000\u9762\u7a4d\u3092\u6c42\u3081\u308bcalcArea\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u308b<\/p>\n\n\n\n
public abstract class Figure{\n    private int teihen;\n    private int takasa;\n\n    public abstract int calcArea();\n}<\/code><\/pre><\/div>\n\n\n\n
\u3000calcArea\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u8eab
\u3000\u3000\u3000\u623b\u308a\u5024\u306e\u578b\u3068\u30e1\u30bd\u30c3\u30c9\u540d\u306e\u307f\u3092\u5b9a\u7fa9\u3059\u308b\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9
\u3000\u3000\u3000\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u30af\u30e9\u30b9\u3092\u62bd\u8c61\u30af\u30e9\u30b9\uff08abstract\uff09\u3068\u3044\u3046

\u3000\u6b21\u306b\u56db\u89d2\u5f62\u30fb\u4e09\u89d2\u5f62\u306e\u30af\u30e9\u30b9\u3092\u793a\u3059<\/p>\n\n\n\n
\/\/ \u56db\u89d2\u5f62\uff08Rectangle\uff09\npublic class Rectangle extends Figure{\n    @Override \n    public int calcArea(){\n        return this.teihen * this.takasa;\n    }\n}\n\n\/\/ \u4e09\u89d2\u5f62\uff08Triangle\uff09\npublic class Triangle extends Figure{\n    @Override \n    public int calcArea(){\n        return this.teihen * this.takasa \/ 2;\n    }\n}<\/code><\/pre><\/div>\n\n\n\n
\u3000Figure\u30af\u30e9\u30b9\u3092\u7d99\u627f\u3059\u308b\u3053\u3068\u3067\u3001
\u3000\u3000\u3000Figure\u306e\u6d3e\u751f\u7248\u30af\u30e9\u30b9Rectangle\u3068Triangle\u3092\u5b9f\u88c5\u3059\u308b
\u3000\u3000\u3000\u89aa:Figure\u3001\u5b50:Rectangle,Triangle<\/p>\n\n\n\n
\u3000calcArea\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u8eab
\u3000\u3000\u3000\u4e09\u89d2\u5f62\u3068\u56db\u89d2\u5f62\u3067\u306e\u9762\u7a4d\u3092\u6c42\u3081\u308b\u516c\u5f0f\u306f\u7570\u306a\u308b\u305f\u3081
\u3000\u3000\u3000\u3000\u3000Figure\u3067\u306f\u30e1\u30bd\u30c3\u30c9\u306e\u67a0\u7d44\u307f\u3060\u3051\u63d0\u4f9b
\u3000\u3000\u3000\u3000\u3000\u7d99\u627f\u5148\u3067\u89aa\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4e0a\u66f8\u304d\uff08Override\uff09\u3059\u308b<\/p>\n\n\n\n
\u3000\u5b9f\u969b\u306e\u4f7f\u7528\u4f8b<\/p>\n\n\n\n
Rectangle rect = new Rectangle();\nrect.teihen = 3;\nrect.takasa = 4;\nSystem.out.println(rect.calcArea());\/\/ 12\u304c\u8868\u793a\u3055\u308c\u308b\n\nTriangle tri = new Triangle();\ntri.teihen = 4;\ntri.takasa = 5;\nSystem.out.println(tri.calcArea());\/\/ 10\u304c\u8868\u793a\u3055\u308c\u308b<\/code><\/pre><\/div>\n\n\n\n
\uff14\uff0e\u30ab\u30d7\u30bb\u30eb\u5316<\/strong><\/h4>\n\n\n\n
\u3000\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u601d\u8003\u306e\uff11\uff0f\uff13\u306e\u8981\u7d20
\u3000\u3000\u3000\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u6301\u3064\u5909\u6570\u306a\u3069\u3092\u96a0\u853d\u3059\u308b\u3053\u3068
\u3000\u3000\u3000\u3000\u3000\u5909\u6570\u306a\u3069\u306e\u5024\u3092\u53c2\u7167\u30fb\u66f4\u65b0\u3067\u304d\u308b\u7bc4\u56f2\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068
\u3000
\u3000Human\u30af\u30e9\u30b9\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u6642<\/p>\n\n\n\n
public class Human {\n    \/\/ \u5c5e\u6027\n    public String name;   \/\/ \u6c0f\u540d\n    private int age;      \/\/ \u5e74\u9f62\n    public String gender; \/\/ \u6027\u5225\n\n    \/\/\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\n    public Human(String name, int age, String gender){\n        this.name = name;\n        this.age = age;\n        this.gender = gender;\n    }\n}<\/code><\/pre><\/div>\n\n\n\n
public class Main{\n    public static void main(String[] args){\n        \/\/Human\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\n        Human tanaka = new Human("\u7530\u4e2d", 30, "\u7537");\n\n        \/\/\u3067\u304d\u308b\u3053\u3068\u306f\n        tanaka.name = "\u4f50\u85e4";\n        \/\/\u3067\u304d\u306a\u3044\u3053\u3068\u306f\n        tanaka.age = 50;\n    }\n}<\/code><\/pre><\/div>\n\n\n\n
\u3000Human\u30af\u30e9\u30b9\u306b\u304a\u3051\u308b\u30ab\u30d7\u30bb\u30eb\u5316\uff08\u96a0\u853d\uff09\u306e\u4f8b
\u3000\u3000\u3000’name’\u306fpublic\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u5916\u90e8\u306e\u30af\u30e9\u30b9\u304b\u3089\u53c2\u7167\u30fb\u5909\u66f4\u304c\u53ef\u80fd
\u3000\u3000\u3000’age’\u306fprivate\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u81ea\u30af\u30e9\u30b9\u304b\u3089\u306e\u307f\u30a2\u30af\u30bb\u30b9\u53ef\u80fd<\/p>\n\n\n\n
\uff15\uff0e\u591a\u614b\u6027\uff08polymorphism\uff09<\/strong><\/h4>\n\n\n\n
\u3000\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u601d\u8003\u306e\uff11\uff0f\uff13\u306e\u8981\u7d20
\u3000\u3000\u3000\u30e1\u30bd\u30c3\u30c9\u306e\u547c\u3073\u51fa\u3057\u306b\u5bfe\u3057\u3066\u3001
\u3000\u3000\u3000\u3000\u3000\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6bce\u306b\u7570\u306a\u308b\u6a5f\u80fd\u3084\u52d5\u4f5c\u3092\u3059\u308b\u3053\u3068

\u3000\u3000\u3000\u3000\u3000’\u591a’\u304f\u306e \u632f\u308b\u821e\u3044\uff08’\u614b’\uff09 \u3092\u6301\u3064 ‘\u6027’\u8cea \u3068\u8003\u3048\u308b

\u3000\u4f8b\u984c\uff08\u62bd\u8c61\u30af\u30e9\u30b9\u304c\uff11\u3064\u3001\u7d99\u627f\u30af\u30e9\u30b9\u304c\uff12\u3064\uff09<\/p>\n\n\n\n
public abstract class Animal{\n    public abstract void bark();\n}\n\npublic class Dog extends Animal{\n    public void bark(){\n        System.out.println("\u308f\u3093!");\n    }\n}\n\npublic class Cat extends Animal{\n    public void bark(){\n        System.out.println("\u306b\u3083\u30fc!");\n    }\n}<\/code><\/pre><\/div>\n\n\n\n
\u3000\u3053\u308c\u3092\u52d5\u304b\u3059<\/p>\n\n\n\n
public class Main{\n    public static void main(String[] args){\n        \/\/Animal\u306e\u5b50\u30af\u30e9\u30b9\u3092\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\n        Dog dog = new Dog();\n        Cat cat = new Cat();\n\n        \/\/list\u306b\u683c\u7d0d\n        List<Animal> animals = new ArrayList<Animal>();\n        animals.add(dog);\n        animals.add(cat);\n\n        \/\/\u305d\u308c\u305e\u308c\u9cf4\u304b\u305b\u308b           \\\u308f\u3093!\/   \\\u306b\u3083\u30fc!\/\n        animals.forEach(animal -> animal.bark());\n    }\n}\n<\/code><\/pre><\/div>\n\n\n\n
\u3000\u7e70\u308a\u8fd4\u3057\u6587\uff08forEach\uff09\u3067\u5404\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306ebark\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3076
\u3000\u3000\u3000\u72ac\u3068\u732b\u3054\u3068\u306b\u9055\u3046\u9cf4\u304d\u58f0\u3092\u767a\u3059\u308b<\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
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