{"id":713,"date":"2022-08-29T19:10:42","date_gmt":"2023-04-18T22:48:54","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/index.php\/2023\/11\/30\/java%e3%81%a7%e3%81%ae%e3%82%b3%e3%83%b3%e3%83%9d%e3%82%b8%e3%83%83%e3%83%88%e3%83%87%e3%82%b6%e3%82%a4%e3%83%b3%e3%83%91%e3%82%bf%e3%83%bc%e3%83%b3\/"},"modified":"2025-08-01T01:52:15","modified_gmt":"2025-07-31T16:52:15","slug":"java%e3%81%a7%e3%81%ae%e3%82%b3%e3%83%b3%e3%83%9d%e3%82%b8%e3%83%83%e3%83%88%e3%83%87%e3%82%b6%e3%82%a4%e3%83%b3%e3%83%91%e3%82%bf%e3%83%bc%e3%83%b3","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%81%ae%e3%82%b3%e3%83%b3%e3%83%9d%e3%82%b8%e3%83%83%e3%83%88%e3%83%87%e3%82%b6%e3%82%a4%e3%83%b3%e3%83%91%e3%82%bf%e3%83%bc%e3%83%b3\/","title":{"rendered":"Java\u3067\u306e\u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3"},"content":{"rendered":"

\u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u69cb\u9020\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306e\u4e00\u3064\u3067\u3059\u3002\u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u90e8\u5206\u3068\u5168\u4f53\u306e\u968e\u5c64\u3092\u8868\u73fe\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3<\/h2>\n

\u540c\u3058\u65b9\u6cd5\u3067\u69cb\u9020\u5185\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u51e6\u7406\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306b\u306f\u3001\u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5b9f\u969b\u306e\u4f8b\u3067\u7406\u89e3\u3057\u307e\u3057\u3087\u3046 – \u30c0\u30a4\u30a2\u30b0\u30e9\u30e0\u306f\u3001\u5186\u3001\u76f4\u7dda\u3001\u4e09\u89d2\u5f62\u306a\u3069\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089\u69cb\u6210\u3055\u308c\u308b\u69cb\u9020\u3067\u3059\u3002\u63cf\u753b\u3092\u8272\uff08\u305f\u3068\u3048\u3070\u8d64\uff09\u3067\u5857\u308a\u3064\u3076\u3059\u3068\u3001\u540c\u3058\u8272\u304c\u63cf\u753b\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u3082\u9069\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u63cf\u753b\u306f\u7570\u306a\u308b\u90e8\u5206\u3067\u69cb\u6210\u3055\u308c\u3066\u304a\u308a\u3001\u3059\u3079\u3066\u306e\u90e8\u5206\u306b\u306f\u540c\u3058\u64cd\u4f5c\u304c\u3042\u308a\u307e\u3059\u3002\u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u30d1\u30bf\u30fc\u30f3\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

    \n
  1. \n
      \u30d9\u30fc\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8 – \u30d9\u30fc\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001\u69cb\u6210\u5185\u306e\u3059\u3079\u3066\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u30d9\u30fc\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u69cb\u6210\u5185\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u9023\u643a\u3057\u307e\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u307e\u305f\u306f\u3059\u3079\u3066\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5171\u901a\u306e\u3044\u304f\u3064\u304b\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u62bd\u8c61\u30af\u30e9\u30b9\u3067\u3042\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n

       <\/p>\n

        \n
      1. \n
          \u30ea\u30fc\u30d5 – \u69cb\u6210\u5185\u306e\u8981\u7d20\u306e\u52d5\u4f5c\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u69cb\u6210\u306e\u69cb\u7bc9\u8981\u7d20\u3067\u3042\u308a\u3001\u30d9\u30fc\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u5b9f\u88c5\u3057\u3066\u3044\u307e\u3059\u3002\u4ed6\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3078\u306e\u53c2\u7167\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/ol>\n<\/li>\n<\/ol>\n

           <\/p>\n

            \u30b3\u30f3\u30dd\u30b8\u30c3\u30c8 – \u30ea\u30fc\u30d5\u8981\u7d20\u304b\u3089\u69cb\u6210\u3055\u308c\u3001\u30d9\u30fc\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u64cd\u4f5c\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002<\/ol>\n

            \u79c1\u306f\u3053\u3053\u3067\u3001\u63cf\u753b\u30b7\u30ca\u30ea\u30aa\u306b\u5408\u308f\u305b\u3066\u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3092\u9069\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

            \u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u30d1\u30bf\u30fc\u30f3\u306e\u57fa\u5e95\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8<\/h3>\n

            \u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u30d1\u30bf\u30fc\u30f3\u306e\u30d9\u30fc\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001\u30ea\u30fc\u30d5\u3068\u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u306e\u305f\u3081\u306e\u5171\u901a\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u79c1\u305f\u3061\u306f\u3001\u6307\u5b9a\u3055\u308c\u305f\u8272\u3067\u5f62\u72b6\u3092\u63cf\u753b\u3059\u308b\u305f\u3081\u306e\u30e1\u30bd\u30c3\u30c9\u3067\u3042\u308bdraw\uff08String fillColor\uff09\u3092\u6301\u3064Shape\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Shape.java<\/p>\n

            package com.scdev.design.composite;\r\n\r\npublic interface Shape {\r\n\t\r\n\tpublic void draw(String fillColor);\r\n}\r\n<\/code><\/pre>\n
            \u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306e\u30ea\u30fc\u30d5\u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/h3>\n
            \u8907\u5408\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306eLeaf\u306f\u3001\u30d9\u30fc\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u5b9f\u88c5\u3057\u3001\u3053\u308c\u3089\u306f\u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u306e\u69cb\u7bc9\u8981\u7d20\u3067\u3059\u3002Triangle\u3001Circle\u306a\u3069\u306e\u8907\u6570\u306eLeaf\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Triangle.java<\/p>\n
            package com.scdev.design.composite;\r\n\r\npublic class Triangle implements Shape {\r\n\r\n\t@Override\r\n\tpublic void draw(String fillColor) {\r\n\t\tSystem.out.println(\"Drawing Triangle with color \"+fillColor);\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n
            \u30b5\u30fc\u30af\u30eb.java<\/p>\n
            package com.scdev.design.composite;\r\n\r\npublic class Circle implements Shape {\r\n\r\n\t@Override\r\n\tpublic void draw(String fillColor) {\r\n\t\tSystem.out.println(\"Drawing Circle with color \"+fillColor);\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n
            \u8907\u5408\u7269<\/h3>\n
            \u8907\u5408\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u306f\u8907\u6570\u306e\u8449\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u542b\u307e\u308c\u3066\u304a\u308a\u3001\u30b0\u30eb\u30fc\u30d7\u304b\u3089\u8449\u3092\u8ffd\u52a0\u307e\u305f\u306f\u524a\u9664\u3059\u308b\u305f\u3081\u306e\u30d8\u30eb\u30d1\u30fc\u30e1\u30bd\u30c3\u30c9\u3092\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u30b0\u30eb\u30fc\u30d7\u304b\u3089\u3059\u3079\u3066\u306e\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3082\u63d0\u4f9b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Drawing.java<\/p>\n
            package com.scdev.design.composite;\r\n\r\nimport java.util.ArrayList;\r\nimport java.util.List;\r\n\r\npublic class Drawing implements Shape{\r\n\r\n\t\/\/collection of Shapes\r\n\tprivate List<Shape> shapes = new ArrayList<Shape>();\r\n\t\r\n\t@Override\r\n\tpublic void draw(String fillColor) {\r\n\t\tfor(Shape sh : shapes)\r\n\t\t{\r\n\t\t\tsh.draw(fillColor);\r\n\t\t}\r\n\t}\r\n\t\r\n\t\/\/adding shape to drawing\r\n\tpublic void add(Shape s){\r\n\t\tthis.shapes.add(s);\r\n\t}\r\n\t\r\n\t\/\/removing shape from drawing\r\n\tpublic void remove(Shape s){\r\n\t\tshapes.remove(s);\r\n\t}\r\n\t\r\n\t\/\/removing all the shapes\r\n\tpublic void clear(){\r\n\t\tSystem.out.println(\"Clearing all the shapes from drawing\");\r\n\t\tthis.shapes.clear();\r\n\t}\r\n}\r\n<\/code><\/pre>\n
            \u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u3082\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u5b9f\u88c5\u3057\u3001\u30ea\u30fc\u30d5\u3068\u540c\u69d8\u306b\u632f\u308b\u821e\u3044\u307e\u3059\u304c\u3001\u8907\u6570\u306e\u30ea\u30fc\u30d5\u8981\u7d20\u3092\u542b\u3080\u3053\u3068\u304c\u3067\u304d\u308b\u3053\u3068\u306b\u7559\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u79c1\u305f\u3061\u306e\u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u30d1\u30bf\u30fc\u30f3\u306e\u5b9f\u88c5\u306f\u6e96\u5099\u304c\u3067\u304d\u3066\u304a\u308a\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u30c6\u30b9\u30c8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
            \u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30d7\u30ed\u30b0\u30e9\u30e0<\/h3>\n
            \u30c6\u30b9\u30c8CompositePattern.java<\/p>\n
            package com.scdev.design.test;\r\n\r\nimport com.scdev.design.composite.Circle;\r\nimport com.scdev.design.composite.Drawing;\r\nimport com.scdev.design.composite.Shape;\r\nimport com.scdev.design.composite.Triangle;\r\n\r\npublic class TestCompositePattern {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tShape tri = new Triangle();\r\n\t\tShape tri1 = new Triangle();\r\n\t\tShape cir = new Circle();\r\n\t\t\r\n\t\tDrawing drawing = new Drawing();\r\n\t\tdrawing.add(tri1);\r\n\t\tdrawing.add(tri1);\r\n\t\tdrawing.add(cir);\r\n\t\t\r\n\t\tdrawing.draw(\"Red\");\r\n\t\t\r\n\t\tdrawing.clear();\r\n\t\t\r\n\t\tdrawing.add(tri);\r\n\t\tdrawing.add(cir);\r\n\t\tdrawing.draw(\"Green\");\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n
            \u4e0a\u8a18\u306e\u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u30d1\u30bf\u30fc\u30f3\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u51fa\u529b\u306f\u3001\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n
            Drawing Triangle with color Red\r\nDrawing Triangle with color Red\r\nDrawing Circle with color Red\r\nClearing all the shapes from drawing\r\nDrawing Triangle with color Green\r\nDrawing Circle with color Green\r\n<\/code><\/pre>\n
            \u30b3\u30f3\u30dd\u30b8\u30c3\u30c8\u30d1\u30bf\u30fc\u30f3\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8<\/h3>\n
              \n
            • Composite pattern should be applied only when the group of objects should behave as the single object.<\/li>\n
            • Composite design pattern can be used to create a tree like structure.<\/li>\n<\/ul>\n
              Java\u306ejava.awt.Container\uff03add\uff08Component\uff09\u306f\u3001Composite\u30d1\u30bf\u30fc\u30f3\u306e\u7d20\u6674\u3089\u3057\u3044\u4f8b\u3067\u3042\u308a\u3001Swing\u3067\u3088\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4ee5\u524d\u306e\u69cb\u9020\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306e\u8a18\u4e8b\uff1a<\/p>\n
                \n
              • Bridge Pattern in Java<\/li>\n
              • Adapter Design Pattern in Java<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
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