{"id":1403,"date":"2019-02-15T12:00:29","date_gmt":"2019-02-15T03:00:29","guid":{"rendered":"https:\/\/www.bold.ne.jp\/engineer-club\/?p=1403"},"modified":"2025-10-06T17:08:58","modified_gmt":"2025-10-06T08:08:58","slug":"java-abstract","status":"publish","type":"post","link":"https:\/\/www.bold.ne.jp\/engineer-club\/java-abstract","title":{"rendered":"Java\u306eabstract\u3068\u306f\uff1f\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u57fa\u790e\u3068abstract\u306e\u4f7f\u3044\u65b9"},"content":{"rendered":"<p><span>\u3053\u3053\u3067\u306f\u3001Java<\/span><span>\u306b\u304a\u3051\u308babstract<\/span><span>\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<br \/>\n\u7d99\u627f\u306f\u7406\u89e3\u3067\u304d\u305f\u3051\u3069\u3001\u62bd\u8c61\u30af\u30e9\u30b9\u306b\u3064\u3044\u3066\u306f\u30a4\u30de\u30a4\u30c1\u7406\u89e3\u3067\u304d\u306a\u3044\u30fb\u30fb\u30fb\u3068\u3044\u3046\u4eba\u306b\u5411\u3051\u305f\u5185\u5bb9\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span>\u82f1\u5358\u8a9e\u3068\u3057\u3066\u306eabstract<\/span><span>\u306f\u65e5\u672c\u8a9e\u3067\u306f\u300c\u62bd\u8c61\u7684\u3001\u3042\u3044\u307e\u3044\u300d\u3068\u3044\u3063\u305f\u610f\u5473\u3067\u3059\u304c\u3001Java<\/span><span>\u306b\u304a\u3044\u3066\u3082abstract<\/span><span>\u304c\u3064\u3044\u305f\u30af\u30e9\u30b9\u3084\u30e1\u30bd\u30c3\u30c9\u3092\u305d\u308c\u305e\u308c\u300c\u62bd\u8c61\u30af\u30e9\u30b9\u300d\u3001\u300c\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u300d\u3068\u3044\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span>\u3061\u306a\u307f\u306b\u307f\u306a\u3055\u3093\u304c\u3053\u308c\u307e\u3067\uff08abstract<\/span><span>\u3092\u77e5\u308b\u4ee5\u524d\uff09\u306bJava<\/span><span>\u3092\u5b66\u3076\u4e2d\u3067\u76ee\u306b\u3057\u3066\u304d\u305f\u3001\u3042\u308b\u3044\u306f\u5b9f\u969b\u306b\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3057\u3066\u304d\u305f\u30af\u30e9\u30b9\u3084\u30e1\u30bd\u30c3\u30c9\u306f\u300c\u5177\u8c61\u30af\u30e9\u30b9\u300d\u3001\u300c\u5177\u8c61\u30e1\u30bd\u30c3\u30c9\u300d\u3068\u3044\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span>\u300c\u5177\u8c61\uff08\u5177\u4f53\u7684\uff09\u300d\u306b\u5bfe\u3059\u308b\u300c\u62bd\u8c61\u300d\u3068\u3044\u3046\u308f\u3051\u3067\u3059\u3002\u3053\u308c\u3060\u3051\u3067\u306f\u306a\u3093\u306e\u3053\u3068\u3084\u3089\u3055\u3063\u3071\u308a\u610f\u5473\u304c\u308f\u304b\u308a\u307e\u305b\u3093\u306d\u3002<br \/>\n\u305d\u308c\u3067\u306f\u3001abstract<\/span><span>\u306b\u3064\u3044\u3066\u5177\u4f53\u7684\u306b\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/span><\/p>\n<p><span>\u306a\u304a\u3001\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306f\u898b\u3084\u3059\u3055\u512a\u5148\u3067\u4f59\u8a08\u306a\u8a18\u8ff0\u306f\u7701\u3044\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u7279\u306b\u6ce8\u91c8\u304c\u306a\u3044\u304b\u304e\u308a\u306f\u540c\u4e00\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u5c5e\u3057\u3066\u3044\u308b\u3082\u306e\u3068\u3057\u3066\u8aad\u307f\u9032\u3081\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">\u76ee\u6b21<\/p><ul class=\"toc_list\"><li><a href=\"#Javaabstract_classabstract_method\">\uff11\uff0eJava\u306b\u304a\u3051\u308b\u62bd\u8c61\u30af\u30e9\u30b9\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9(abstract class\u3001abstract method)\u3068\u306f<\/a><\/li><li><a href=\"#i\">\uff12\uff0e\u62bd\u8c61\u30af\u30e9\u30b9\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u7279\u5fb4<\/a><ul><li><a href=\"#21_new\">2\u22121. \u62bd\u8c61\u30af\u30e9\u30b9\u306fnew\u306b\u3088\u308b\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u304c\u3067\u304d\u306a\u3044<\/a><\/li><li><a href=\"#22\">2\u22122. \u30b5\u30d6\u30af\u30e9\u30b9\u304c\u5177\u8c61\u30af\u30e9\u30b9\u306e\u5834\u5408\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3092\u5f37\u5236\u3059\u308b<\/a><\/li><\/ul><\/li><li><a href=\"#abstract\">\uff13\uff0eabstract\u306e\u4f7f\u3044\u65b9\u3068\u30e1\u30ea\u30c3\u30c8<\/a><\/li><li><a href=\"#i-2\">\uff14\uff0e\u62bd\u8c61\u30af\u30e9\u30b9\u3092\u7406\u89e3\u3059\u308b\uff1d\u30c1\u30fc\u30e0\u3067\u958b\u767a\u3059\u308b\u3068\u3044\u3046\u3053\u3068\u3092\u7406\u89e3\u3059\u308b<\/a><\/li><li><a href=\"#i-3\">\uff15\uff0e\u3055\u3044\u3054\u306b<\/a><\/li><\/ul><\/div>\n<h2><span id=\"Javaabstract_classabstract_method\">\uff11\uff0eJava\u306b\u304a\u3051\u308b\u62bd\u8c61\u30af\u30e9\u30b9\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9(abstract class\u3001abstract method)\u3068\u306f<\/span><\/h2>\n<p><span>\u305a\u3070\u308a\u4e00\u8a00\u3067\u8868\u73fe\u3059\u308b\u306a\u3089\u3001\u300c<strong>\u51e6\u7406\u5185\u5bb9\u304c\u78ba\u5b9a\u3057\u3066\u3044\u306a\u3044\u30af\u30e9\u30b9\uff08\u30e1\u30bd\u30c3\u30c9\uff09<\/strong>\u300d\u306e\u3053\u3068\u3067\u3059\u3002<\/span><span>\u3053\u308c\u304c\u4f55\u3092\u610f\u5473\u3059\u308b\u304b\u306f\u5f8c\u8ff0\u3059\u308b\u3068\u3057\u3066\u3001\u307e\u305a\u306f\u62bd\u8c61\u30af\u30e9\u30b9\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/span><\/p>\n<p><strong> <span class=\"f-marker-p\">\u25aa\ufe0f\u62bd\u8c61\u30af\u30e9\u30b9\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u5ba3\u8a00<\/span><\/strong><\/p>\n<pre class=\"prettyprint lang:default decode:true\">abstract class Sample { \/\/\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u5ba3\u8a00\r\n\tabstract void hoge(); \/\/\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u5ba3\u8a00\r\n}<\/pre>\n<p><span>\u3053\u306e\u3088\u3046\u306b\u3001abstract<\/span><span>\u81ea\u4f53\u306f\u4fee\u98fe\u5b50\u306e\u3072\u3068\u3064\u3067\u3059\u3002\u4fee\u98fe\u5b50\u3068\u306fpublic<\/span><span>\u3084private<\/span><span>\u3001protected<\/span><span>\u3068\u3044\u3063\u305f\u30a2\u30af\u30bb\u30b9\u4fee\u98fe\u5b50\u3084static<\/span><span>\u3084final<\/span><span>\u306e\u3053\u3068\u3067\u3059\u3002abstract<\/span><span>\u3082\u3053\u308c\u3089\u3068\u540c\u3058\u304f\u3001\u30af\u30e9\u30b9\u3084\u30e1\u30bd\u30c3\u30c9\u306e\u5ba3\u8a00\u6642\u306b\u4fee\u98fe\u5b50\u306e\u4e00\u3064\u3068\u3057\u3066\u8a18\u8f09\u3057\u307e\u3059\u3002<\/span><\/p>\n<p><span>\u30af\u30e9\u30b9\u3084\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3059\u308b\u6642\u306babstract<\/span><span>\u3092\u52a0\u3048\u308b\u3053\u3068\u3067\u300c\u3053\u306e\u30af\u30e9\u30b9\uff08\u3042\u308b\u3044\u306f\u30e1\u30bd\u30c3\u30c9\uff09\u306f\u62bd\u8c61\u30af\u30e9\u30b9\uff08\u30e1\u30bd\u30c3\u30c9\uff09\u3067\u3059\u300d\u3068\u6307\u5b9a\u3059\u308b\u306e\u3067\u3059\u3002<\/span><\/p>\n<p><span>\u66f8\u304d\u65b9\u306b\u3064\u3044\u3066\u306f\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u65b9\u306fabstract<\/span><span>\u304c\u4ed8\u3044\u3066\u3044\u308b\u4ee5\u5916\u3001\u5f93\u6765\u306e\u30af\u30e9\u30b9\u5b9a\u7fa9\u3068\u5909\u308f\u308a\u3042\u308a\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u65b9\u306f\u898b\u6163\u308c\u306a\u3044\u3067\u3059\u306d\u3002\u30e1\u30bd\u30c3\u30c9\u540d()\u306e\u5f8c\u306b{}\u304c\u3042\u308a\u307e\u305b\u3093\u3002<\/span><\/p>\n<p><span>\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306f\u51e6\u7406\u5185\u5bb9\u304c\u78ba\u5b9a\u3057\u3066\u3044\u306a\u3044\u3002\u3064\u307e\u308a\u3001\u51e6\u7406\u5185\u5bb9\u3092\u66f8\u304f\u5fc5\u8981\u304c\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u5fc5\u8981\u304c\u306a\u3051\u308c\u3070\u3001\u51e6\u7406\u3092\u66f8\u304f\u305f\u3081\u306e\u30d6\u30ed\u30c3\u30af\u3082\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001\u3053\u306e\u3088\u3046\u306a\u8a18\u8ff0\u306b\u306a\u308a\u307e\u3059\u3002<\/span><span>\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3059\u308b\u6642\u306f{}\u306e\u4ee3\u308f\u308a\u306b\u884c\u672b\u306b;\u3092\u66f8\u304f\u3053\u3068\u3092\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/span><\/p>\n<div class=\"attention a-3\">\n<p class=\"attention-title\">\u2606Point!\u2606<\/p>\n<ul>\n<li>\u62bd\u8c61\u30af\u30e9\u30b9\uff08\u30e1\u30bd\u30c3\u30c9\uff09\u3068\u306f\u3001\u3069\u3046\u3044\u3046\u51e6\u7406\u3092\u884c\u3046\u304b\u304c\u6c7a\u307e\u3063\u3066\u3044\u306a\u3044\u30af\u30e9\u30b9\uff08\u30e1\u30bd\u30c3\u30c9\uff09<\/li>\n<li>\u30af\u30e9\u30b9\u3084\u30e1\u30bd\u30c3\u30c9\u306e\u5ba3\u8a00\u6642\u306babstract\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u3067\u3001\u62bd\u8c61\u30af\u30e9\u30b9\uff08\u30e1\u30bd\u30c3\u30c9\uff09\u3067\u3042\u308b\u3053\u3068\u3092\u6307\u5b9a\u3059\u308b<\/li>\n<li>\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306f\u51e6\u7406\u5185\u5bb9\u3092\u66f8\u304b\u306a\u3044\u3002\u3060\u304b\u3089{}\u3067\u306f\u306a\u304f;\u3067\u7d42\u308f\u3089\u305b\u308b<\/li>\n<\/ul>\n<\/div>\n<h2><span id=\"i\">\uff12\uff0e\u62bd\u8c61\u30af\u30e9\u30b9\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u7279\u5fb4<\/span><\/h2>\n<p>\u62bd\u8c61\u30af\u30e9\u30b9\u3084\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306f\u6b21\u306e\u7279\u5fb4\u3092\u6301\u3061\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u62bd\u8c61\u30af\u30e9\u30b9\u306fnew\u306b\u3088\u308b\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u304c\u3067\u304d\u306a\u3044<\/li>\n<li>\u30b5\u30d6\u30af\u30e9\u30b9\u304c\u5177\u8c61\u30af\u30e9\u30b9\u306e\u5834\u5408\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3092\u5f37\u5236\u3059\u308b<\/li>\n<\/ul>\n<h3><span id=\"21_new\">2\u22121. \u62bd\u8c61\u30af\u30e9\u30b9\u306fnew\u306b\u3088\u308b\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u304c\u3067\u304d\u306a\u3044<\/span><\/h3>\n<p>\u62bd\u8c61\u30af\u30e9\u30b9\u3092\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3057\u3088\u3046\u3068\u3057\u3066\u3082\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u3067\u304d\u305a\u30a8\u30e9\u30fc\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306bmain\u30e1\u30bd\u30c3\u30c9\u3067\u62bd\u8c61\u30af\u30e9\u30b9\u3092\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3057\u3088\u3046\u3068\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"prettyprint lang:default decode:true\">public static void main(String[] args) {\r\n\u3000Sample sample = new Sample();\r\n}<\/pre>\n<p><span>\u3057\u304b\u3057\u3001\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002\uff08Eclipse\u3067\u5b9f\u884c\u3057\u3066\u3044\u307e\u3059\uff09<\/span><\/p>\n<pre class=\"prettyprint lang:default decode:true\">Exception in thread \"main\" java.lang.Error: Unresolved compilation problem: \r\n    \u578b Sample \u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3067\u304d\u307e\u305b\u3093<\/pre>\n<p><span>\u30eb\u30fc\u30eb\u306b\u5247\u3063\u3066\u4f5c\u3063\u305f\u30af\u30e9\u30b9\u306a\u306e\u306b\u30a8\u30e9\u30fc\u304c\u51fa\u308b\u306a\u3093\u3066\u3044\u3058\u308f\u308b\u3058\u3083\u306a\u3044\u304b\uff01\u3068\u601d\u308f\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u3001\u3053\u3053\u306f\u4e00\u3064\u843d\u3061\u7740\u3044\u3066\u8003\u3048\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/span><span>\u62bd\u8c61\u30af\u30e9\u30b9\u306f\u300c\u51e6\u7406\u5185\u5bb9\u304c\u78ba\u5b9a\u3057\u3066\u3044\u306a\u3044\u30af\u30e9\u30b9\u300d\u3067\u3057\u305f\u306d\u3002\u3064\u307e\u308a\u672a\u5b8c\u6210\u306a\u8a2d\u8a08\u56f3\u3067\u3059\u3002<\/span><\/p>\n<p><span>\u51e6\u7406\u5185\u5bb9\u304c\u6c7a\u307e\u3063\u3066\u3044\u306a\u3044\u30af\u30e9\u30b9\u304c\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3067\u304d\u3066\u3057\u307e\u3046\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u672a\u5b8c\u6210\u306a\u8a2d\u8a08\u56f3\u304b\u3089\u30e2\u30ce\u304c\u4f5c\u3089\u308c\u3066\u3057\u307e\u3046\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u307e\u3068\u3082\u306b\u52d5\u304b\u306a\u3044\u3082\u306e\u304c\u4f5c\u3089\u308c\u3066\u3057\u307e\u3046\u306e\u306f\u3068\u3066\u3082\u30de\u30ba\u30a4\u3053\u3068\u3067\u3059\u3002<\/span><span>\u62bd\u8c61\u30af\u30e9\u30b9\u304c\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3067\u304d\u306a\u3044\u306e\u306f\u3044\u3058\u308f\u308b\u3067\u306f\u306a\u304f\u3001\u3080\u3057\u308dJava\u306e\u512a\u3057\u3055\u306a\u306e\u3067\u3059\u3002<\/span><\/p>\n<p><span>\u3067\u306f\u672a\u5b8c\u6210\u306a\u8a2d\u8a08\u56f3\u3092\u3069\u3046\u6271\u3048\u3070\u3044\u3044\u306e\u304b\u3002\u7d99\u627f\u3057\u3066\u30b5\u30d6\u30af\u30e9\u30b9\u3067\u5177\u4f53\u7684\u306a\u51e6\u7406\u3092\u5b9f\u88c5\u3057\u3066\u5b8c\u6210\u3055\u305b\u308c\u3070\u3044\u3044\u306e\u3067\u3059\u3002\u305d\u3057\u3066\u3053\u306e\u5b8c\u6210\u3057\u305f\u8a2d\u8a08\u56f3\u3053\u305d\u304c\u3001\u5177\u8c61\u30af\u30e9\u30b9\u3067\u3059\u3002\u51e6\u7406\u5185\u5bb9\u304c\u672a\u78ba\u5b9a\u3068\u3044\u3046\u3042\u3044\u307e\u3044\u306a\u72b6\u614b\uff08\u62bd\u8c61\u7684\uff09\u304b\u3089\u3001\u51e6\u7406\u5185\u5bb9\u304c\u78ba\u5b9a\u3057\u305f\u72b6\u614b\uff08\u5177\u4f53\u7684\uff09\u306b\u306a\u3063\u305f\u306e\u3067\u3059\u3002<\/span><\/p>\n<p><span>\u3061\u306a\u307f\u306b\u3001\u30b5\u30d6\u30af\u30e9\u30b9\u3082abstract\u3067\u62bd\u8c61\u30af\u30e9\u30b9\u306b\u6307\u5b9a\u3059\u308c\u3070\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u3066\u3044\u306a\u304f\u3066\u3082\u30a8\u30e9\u30fc\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u30b5\u30d6\u30af\u30e9\u30b9\u306b\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u304c\u5f37\u5236\u3055\u308c\u308b\u306e\u306f\u3001\u5177\u8c61\u30af\u30e9\u30b9\u306e\u3068\u304d\u3060\u3051\u3067\u3059\u3002<\/span><\/p>\n<div class=\"attention a-3\">\n<p class=\"attention-title\">\u2606Point!\u2606<\/p>\n<ul>\n<li>\u62bd\u8c61\u30af\u30e9\u30b9\u306f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3067\u304d\u306a\u3044\u3053\u3068\u3067\u3001\u672a\u5b8c\u6210\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u751f\u307e\u308c\u308b\u3053\u3068\u3092\u9632\u3044\u3067\u304f\u308c\u308b<\/li>\n<li>\u3059\u306a\u308f\u3061\u3001\u62bd\u8c61\u30af\u30e9\u30b9\u306f\u7d99\u627f\u5143\uff08\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\uff09\u3068\u306a\u308b\u3053\u3068\u304c\u524d\u63d0\u306e\u30af\u30e9\u30b9<\/li>\n<li>\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u7d99\u627f\u5148\uff08\u30b5\u30d6\u30af\u30e9\u30b9\uff09\u3092\u3075\u305f\u305f\u3073\u62bd\u8c61\u30af\u30e9\u30b9\u306b\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/div>\n<h3><span id=\"22\">2\u22122. \u30b5\u30d6\u30af\u30e9\u30b9\u304c\u5177\u8c61\u30af\u30e9\u30b9\u306e\u5834\u5408\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3092\u5f37\u5236\u3059\u308b<\/span><\/h3>\n<p><span>\uff11\u7ae0\u306e\u5192\u982d\u3067\u62bd\u8c61\u30af\u30e9\u30b9\u3068\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u5ba3\u8a00\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u884c\u3046\u3068\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002<\/span><\/p>\n<pre class=\"prettyprint lang:default decode:true\">abstract class Sample { \/\/\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u5ba3\u8a00\r\n\u3000abstract void hoge(); \/\/\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u5ba3\u8a00\r\n}<\/pre>\n<p><span>\u3042\u306a\u305f\u304c\u62bd\u8c61\u30af\u30e9\u30b9\u3092\u7d99\u627f\u3057\u305f\u30b5\u30d6\u30af\u30e9\u30b9\u3092\u4f5c\u308d\u3046\u3068\u3057\u305f\u6642\u306b\u3001\u3046\u3063\u304b\u308a\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u5fd8\u308c\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u305f\u3068\u3057\u307e\u3059\u3002<\/span><\/p>\n<pre class=\"prettyprint lang:default decode:true\">public class ChildSample extends Sample {\r\n\r\n}<\/pre>\n<p><span>\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u8b66\u544a\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002\uff08\u8868\u793a\u306fEclipse\u306e\u3082\u306e\u3067\u3059\uff09<\/span><\/p>\n<p><a href=\"https:\/\/www.bold.ne.jp\/engineer-club\/wp-content\/uploads\/2019\/02\/900c70fa5f7dbc014e6f762d5e0e885c.jpg\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.bold.ne.jp\/engineer-club\/wp-content\/uploads\/2019\/02\/900c70fa5f7dbc014e6f762d5e0e885c.jpg\" alt=\"\u8b66\u544a\" width=\"864\" height=\"262\" class=\"alignnone size-full wp-image-1405\" srcset=\"https:\/\/www.bold.ne.jp\/engineer-club\/wp-content\/uploads\/2019\/02\/900c70fa5f7dbc014e6f762d5e0e885c.jpg 864w, https:\/\/www.bold.ne.jp\/engineer-club\/wp-content\/uploads\/2019\/02\/900c70fa5f7dbc014e6f762d5e0e885c-768x233.jpg 768w\" sizes=\"(max-width: 864px) 100vw, 864px\" \/><\/a><\/p>\n<p><span>\u5f53\u7136\u3001\u30a8\u30e9\u30fc\u304c\u51fa\u305f\u307e\u307e\u3067\u306f\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u6f0f\u308c\u304c\u3042\u3063\u305f\u5834\u5408\u306f\u30a8\u30e9\u30fc\u304c\u51fa\u308b\uff1d\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3092\u5f37\u5236\u3059\u308b\u3001\u3068\u3044\u3046\u3053\u3068\u304c\u304a\u5206\u304b\u308a\u3044\u305f\u3060\u3051\u305f\u3067\u3057\u3087\u3046\u304b\u3002<\/span><\/p>\n<p><span>\u4e0a\u306e\u4f8b\u3067\u306f\u3046\u3063\u304b\u308a\u5fd8\u308c\u305f\u3068\u3057\u307e\u3057\u305f\u304c\u3001\u4eee\u306b\u30e1\u30bd\u30c3\u30c9\u540d\u3092hogee<\/span><span>\u306a\u3069\u3001\u9593\u9055\u3063\u305f\u5834\u5408\u3082\u5168\u304f\u5225\u306e\u30e1\u30bd\u30c3\u30c9\u3068\u5224\u65ad\u3055\u308c\u308b\u305f\u3081\u3001\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3092\u3057\u305f\u3053\u3068\u306b\u306f\u306a\u3089\u305a\u540c\u69d8\u306b\u30a8\u30e9\u30fc\u3068\u306a\u308a\u307e\u3059\u3002<\/span><\/p>\n<p><span>\u00a0<\/span><span>\u305f\u3060\u300c\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3092\u5f37\u5236\u3059\u308b\u300d\u3001\u3068\u805e\u304f\u3068\u3081\u3093\u3069\u304f\u3055\u3044\u30eb\u30fc\u30eb\u3092\u62bc\u3057\u4ed8\u3051\u3089\u308c\u3066\u3044\u308b\u3088\u3046\u306b\u611f\u3058\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u3001\u5f37\u5236\u3059\u308b\u3053\u3068\u306f\u30d7\u30ed\u30b0\u30e9\u30de\u304c\u610f\u56f3\u3057\u306a\u3044\u8a18\u8ff0\uff08\u3046\u3063\u304b\u308a\u5fd8\u308c\u3084\u8a18\u8ff0\u30df\u30b9\uff09\u3092\u3057\u305f\u3068\u304d\u306b\u305d\u306e\u3053\u3068\u3092\u6559\u3048\u3066\u304f\u308c\u308b\u4fbf\u5229\u306a\u6a5f\u80fd\u306a\u306e\u3067\u3059\u3002\u3053\u308c\u3082\u307e\u305fJava<\/span><span>\u306e\u512a\u3057\u3055\u3067\u3059\u306d\u3002<\/span><span>\u307e\u305f\u3001\u3053\u306e\u6a5f\u80fd\u306b\u3088\u308a\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306f\u78ba\u5b9f\u306b\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3055\u308c\u308b\u305f\u3081\u3001\u30b5\u30d6\u30af\u30e9\u30b9\u3067\u51e6\u7406\u5185\u5bb9\u304c\u78ba\u5b9a\u3059\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u3002<\/span><\/p>\n<div class=\"attention a-3\">\n<p class=\"attention-title\">\u2606Point!\u2606<\/p>\n<ul>\n<li>\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3092\u5f37\u5236\u3059\u308b\u3053\u3068\u3067\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u306e\u30df\u30b9\u3092\u672a\u7136\u306b\u9632\u3044\u3067\u304f\u308c\u308b<\/li>\n<li>\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306f\u7d99\u627f\u5148\uff08\u30b5\u30d6\u30af\u30e9\u30b9\uff09\u3067\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3055\u308c\u308b\u3053\u3068\u3067\u51e6\u7406\u5185\u5bb9\u304c\u78ba\u5b9a\u3059\u308b<\/li>\n<\/ul>\n<\/div>\n<h2><span id=\"abstract\">\uff13\uff0eabstract\u306e\u4f7f\u3044\u65b9\u3068\u30e1\u30ea\u30c3\u30c8<\/span><\/h2>\n<p><span>\u62bd\u8c61\u30af\u30e9\u30b9\u3068\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u30dd\u30a4\u30f3\u30c8\u306e\u4e2d\u3067\u3082\u6b21\u306e2\u70b9\u306b\u6ce8\u76ee\u3057\u307e\u3059\u3002<\/span><\/p>\n<ul>\n<li><span><strong>\u62bd\u8c61\u30af\u30e9\u30b9\u306f\u7d99\u627f\u5143\uff08\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\uff09\u3068\u306a\u308b\u3053\u3068\u304c\u524d\u63d0\u306e\u30af\u30e9\u30b9<\/strong><\/span><\/li>\n<li><span><strong>\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306f\u7d99\u627f\u5148\uff08\u30b5\u30d6\u30af\u30e9\u30b9\uff09\u3067\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3055\u308c\u308b\u3053\u3068\u3067\u51e6\u7406\u5185\u5bb9\u304c\u78ba\u5b9a\u3059\u308b<\/strong><\/span><\/li>\n<\/ul>\n<p><span>\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u3053\u3068\u306f\u308f\u304b\u3063\u305f\u3051\u308c\u3069\u3082\u3001\u306a\u305c\u3053\u3093\u306a\u56de\u308a\u304f\u3069\u3044\u3053\u3068\u3092\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u306e\u304b\u3002\u3068\u601d\u308f\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u305d\u306e\u7406\u7531\u3092\u77e5\u308b\u305f\u3081\u306b\u3082\u3001abstract\u306e\u4f7f\u3044\u65b9\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/span><\/p>\n<p><span>\u00a0<\/span><span>\u4f8b\u3048\u3070\u3001\u3042\u308b\u304a\u5e97\u3092\u30af\u30e9\u30b9\u3068\u3057\u3066\u8868\u73fe\u3059\u308b\u3068\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u305d\u306e\u304a\u5e97\u3067\u306e\u300c\u4f1a\u8a08\u306e\u65b9\u6cd5\u300d\u3092\u8003\u3048\u307e\u3059\u3002\u4e16\u306e\u4e2d\u306b\u3042\u308b\u4f1a\u8a08\u306e\u65b9\u6cd5\u3092\u8003\u3048\u308b\u3068\u3001\u3044\u304f\u3064\u304b\u65b9\u6cd5\u304c\u601d\u3044\u6d6e\u304b\u3073\u307e\u3059\u3002<\/span><\/p>\n<ul>\n<li><span>\u30ec\u30b8\u307e\u3067\u5546\u54c1\u3092\u6301\u3063\u3066\u3044\u304d\u3001\u5e97\u54e1\u3055\u3093\u306b\u5546\u54c1\u3092\u6e21\u3057\u3066\u30ec\u30b8\u3067\u30d0\u30fc\u30b3\u30fc\u30c9\u3092\u8aad\u307f\u53d6\u3063\u3066\u3082\u3089\u3044\u304a\u91d1\u3092\u6255\u3046<\/span><\/li>\n<li><span>\u30bb\u30eb\u30d5\u30ec\u30b8\u307e\u3067\u5546\u54c1\u3092\u6301\u3063\u3066\u3044\u304d\u3001\u81ea\u5206\u3067\u30d0\u30fc\u30b3\u30fc\u30c9\u3092\u8aad\u307f\u53d6\u308a\u304a\u91d1\u3092\u6255\u3046<\/span><\/li>\n<li><span>\u5546\u54c1\u3092\u624b\u306b\u3059\u308b\u524d\u306b\u5238\u58f2\u6a5f\u3067\u5238\u3092\u3042\u3089\u304b\u3058\u3081\u8cb7\u3046<\/span><\/li>\n<\/ul>\n<p><span>\u3053\u308c\u3089\u306f\u65b9\u6cd5\u306f\u9055\u3048\u3069\u3001\u300c\u4f1a\u8a08\u3092\u3059\u308b\u300d\u3068\u3044\u3046\u884c\u70ba\u81ea\u4f53\u306b\u9055\u3044\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3067\u306f\u5b9f\u969b\u306b\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u62bd\u8c61\u30af\u30e9\u30b9\u3092\u4f7f\u3046\u306e\u304b\u3001\u4f8b\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/span><\/p>\n<p><span>\u00a0<\/span><span>\u307e\u305a\u3001\u62bd\u8c61\u30af\u30e9\u30b9Store\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/span><\/p>\n<pre class=\"prettyprint lang:default decode:true\">\/\/ \u62bd\u8c61\u30af\u30e9\u30b9Store\r\nabstract class Store {\r\n    abstract void payment(); \/\/\u300c\u4f1a\u8a08\u3092\u3059\u308b\u300d\u30e1\u30bd\u30c3\u30c9\r\n}<\/pre>\n<p><span>\u6b21\u306b\u3001\u3053\u306eStore\u30af\u30e9\u30b9\u3092\u7d99\u627f\u3057\u305f3\u3064\u306e\u30b5\u30d6\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/span><\/p>\n<ul>\n<li><strong><span class=\"f-marker-w\">ConvenienceStore\u30af\u30e9\u30b9<\/span><\/strong><\/li>\n<\/ul>\n<pre class=\"prettyprint lang:default decode:true\">class ConvenienceStore extends Store {\r\n\u3000void payment() {\r\n\u3000\u3000System.out.println(\"\u30ec\u30b8\u307e\u3067\u5546\u54c1\u3092\u6301\u3063\u3066\u3044\u3063\u3066\u5e97\u54e1\u3055\u3093\u306b\u6e21\u3059\");\r\n\u3000}\r\n}<\/pre>\n<ul>\n<li><strong><span class=\"f-marker-w\">SuperMarket\u30af\u30e9\u30b9<\/span><\/strong><\/li>\n<\/ul>\n<pre class=\"prettyprint lang:default decode:true\">class SuperMarket extends Store {\r\n\u3000void payment() {\r\n\u3000\u3000System.out.println(\"\u30bb\u30eb\u30d5\u30ec\u30b8\u307e\u3067\u5546\u54c1\u3092\u6301\u3063\u3066\u3044\u3063\u3066\u81ea\u5206\u3067\u30d0\u30fc\u30b3\u30fc\u30c9\u3092\u8aad\u307f\u53d6\u308b\");\r\n\u3000}\r\n}<\/pre>\n<ul>\n<li><strong><span class=\"f-marker-w\">FastFoodStore\u30af\u30e9\u30b9<\/span><\/strong><\/li>\n<\/ul>\n<pre class=\"prettyprint lang:default decode:true\">class FastFoodStore extends Store {\r\n\u3000void payment() {\r\n\u3000\u3000System.out.println(\"\u5238\u58f2\u6a5f\u3067\u98df\u5238\u3092\u8cb7\u3063\u3066\u5e97\u54e1\u3055\u3093\u306b\u6e21\u3059\");\r\n\u3000}\r\n}<\/pre>\n<p><span>\u305d\u3057\u3066\u3001\u3053\u308c\u3089\u30b5\u30d6\u30af\u30e9\u30b9\u3092\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3057\u3066payment\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u884c\u3057\u3066\u307f\u307e\u3059\u3002<\/span><\/p>\n<pre class=\"prettyprint lang:default decode:true\">public class Main {\r\n\u3000public static void main(String[] args) {\r\n\u3000\u3000ConvenienceStore store1= new ConvenienceStore();\r\n\u3000\u3000SuperMarket store2= new SuperMarket();\r\n\u3000\u3000FastFoodStore store3= new FastFoodStore();\r\n\r\n\u3000\u3000store1.payment();\r\n\u3000\u3000store2.payment();\r\n\u3000\u3000store3.payment();\r\n\u3000}\r\n}<\/pre>\n<p><span>\u7d50\u679c\u306f\u3053\u3061\u3089\u3067\u3059\u3002<\/span><\/p>\n<pre class=\"prettyprint lang:default decode:true\">\u30ec\u30b8\u307e\u3067\u5546\u54c1\u3092\u6301\u3063\u3066\u3044\u3063\u3066\u5e97\u54e1\u3055\u3093\u306b\u6e21\u3059\r\n\u30bb\u30eb\u30d5\u30ec\u30b8\u307e\u3067\u5546\u54c1\u3092\u6301\u3063\u3066\u3044\u3063\u3066\u81ea\u5206\u3067\u30d0\u30fc\u30b3\u30fc\u30c9\u3092\u8aad\u307f\u53d6\u308b\r\n\u5238\u58f2\u6a5f\u3067\u98df\u5238\u3092\u8cb7\u3063\u3066\u5e97\u54e1\u3055\u3093\u306b\u6e21\u3059<\/pre>\n<p><span>\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u304c\u6b63\u3057\u304f\u884c\u308f\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u305d\u308c\u305e\u308c\u306e\u304a\u5e97\u306e\u65b9\u6cd5\u3067\u4f1a\u8a08\u304c\u884c\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span>\u3059\u3067\u306b\u89e3\u8aac\u3057\u305f\u3068\u304a\u308a\u3001\u5404\u30b5\u30d6\u30af\u30e9\u30b9\u3067payment<\/span><span>\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u5fd8\u308c\u3066\u3044\u305f\u308a\u3001\u3042\u308b\u3044\u306f\u30e1\u30bd\u30c3\u30c9\u540d\u30921\u6587\u5b57\u3067\u3082\u9593\u9055\u3048\u3066\u3044\u305f\u5834\u5408\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u306f\u3067\u304d\u305a\u30a8\u30e9\u30fc\u3068\u306a\u308a\u307e\u3059\u3002<\/span><span>\u3064\u307e\u308a\u3001\u62bd\u8c61\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u300c\u304a\u5e97\u3092\u4f5c\u308b\u6642\u306f\u5fc5\u305a\u4f1a\u8a08\u65b9\u6cd5\u3092\u6c7a\u3081\u308b\u3093\u3060\u3088\u3002\u4f1a\u8a08\u306e\u65b9\u6cd5\u306f\u305d\u308c\u305e\u308c\u306e\u304a\u5e97\u306b\u4efb\u305b\u308b\u3088\u300d\u3068\u3044\u3046\u30eb\u30fc\u30eb\u304c\u4f5c\u3089\u308c\u305f\u306e\u3067\u3059\u3002<\/span><\/p>\n<p><span>\u3053\u306e\u30eb\u30fc\u30eb\u306fStore<\/span><span>\u30af\u30e9\u30b9\u3092\u7d99\u627f\u3059\u308b\u3059\u3079\u3066\u306e\u30b5\u30d6\u30af\u30e9\u30b9\u306b\u9069\u7528\u3055\u308c\u308b\u305f\u3081\u3001\u4eca\u5f8c\u304a\u5e97\u306e\u7a2e\u985e\u304c\u5897\u3048\u3066\u3044\u3063\u3066\u3082\u3001\u4f1a\u8a08\u65b9\u6cd5\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u306a\u3044\u304a\u5e97\u304c\u751f\u307e\u308c\u3066\u3057\u307e\u3046\u30ea\u30b9\u30af\u304c\u7121\u304f\u306a\u308a\u307e\u3059\u3002<\/span><\/p>\n<p><span>\u3053\u306e\u3088\u3046\u306b\u3001\u300c\u62bd\u8c61\u30af\u30e9\u30b9\u3092\u7d99\u627f\u3055\u305b\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3092\u5f37\u5236\u3055\u305b\u308b\u300d\u3053\u3068\u306f\u3001\u300c\u540c\u3058\u3088\u3046\u306a\u51e6\u7406\u3092\u884c\u3046\u304c\u305d\u308c\u305e\u308c\u51e6\u7406\u5185\u5bb9\u304c\u7570\u306a\u308b\u30af\u30e9\u30b9\u3092\u8907\u6570\u4f5c\u3089\u305b\u305f\u3044\u300d\u3068\u304d\u306b\u3068\u3066\u3082\u6709\u7528\u306a\u306e\u3067\u3059\u3002<\/span><\/p>\n<p><span>\u3053\u308c\u3053\u305d\u304c\u3001abstract\u3092\u7528\u3044\u308b\u30e1\u30ea\u30c3\u30c8\u3067\u3059\u3002<\/span><\/p>\n<div class=\"attention a-3\">\n<p class=\"attention-title\">\u2606Point!\u2606<\/p>\n<ul>\n<li>\u62bd\u8c61\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3059\u308b\uff1d\u30b5\u30d6\u30af\u30e9\u30b9\u3092\u4f5c\u308b\u305f\u3081\u306e\u30eb\u30fc\u30eb\u3092\u4f5c\u308b<\/li>\n<\/ul>\n<\/div>\n<h2><span id=\"i-2\">\uff14\uff0e\u62bd\u8c61\u30af\u30e9\u30b9\u3092\u7406\u89e3\u3059\u308b\uff1d\u30c1\u30fc\u30e0\u3067\u958b\u767a\u3059\u308b\u3068\u3044\u3046\u3053\u3068\u3092\u7406\u89e3\u3059\u308b<\/span><\/h2>\n<p><span>\u30e1\u30ea\u30c3\u30c8\u3063\u3066\u8a00\u3046\u3051\u3069\u3001\u3042\u3089\u304b\u3058\u3081\u30ad\u30c1\u30f3\u3068\u3069\u306e\u3088\u3046\u306a\u30af\u30e9\u30b9\u3092\u4f5c\u308b\u304b\u628a\u63e1\u3057\u3066\u304a\u3051\u3070\u62bd\u8c61\u30af\u30e9\u30b9\u3092\u308f\u3056\u308f\u3056\u4f5c\u308b\u5fc5\u8981\u306a\u3093\u3066\u306a\u3044\u3093\u3058\u3083\u306a\u3044\uff1f\u3068\u7591\u554f\u306b\u601d\u308f\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u305d\u306e\u7591\u554f\u306f\u3042\u308b\u9762\u3067\u306f\u6b63\u89e3\u3067\u3059\u3002<\/span><\/p>\n<p><span>\u3042\u306a\u305f\u304c\u4e00\u4eba\u3067\u958b\u767a\u3092\u3057\u3066\u3044\u308b\u5834\u5408\u3084\u3001\u4eca\u5f8c\u306e\u6a5f\u80fd\u306e\u62e1\u5f35\u3092\u8003\u3048\u306a\u3044\u5834\u5408\u3001abstract<\/span><span>\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u306f\u3042\u307e\u308a\u306a\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u305d\u308c\u3069\u3053\u308d\u304b\u3001\u4f59\u8a08\u306a\u30b3\u30fc\u30c9\u304c\u5897\u3048\u308b\u3060\u3051\u306b\u306a\u308b\u6050\u308c\u3055\u3048\u3042\u308a\u307e\u3059\u3002<\/span><span>\u304a\u5e97\u306e\u4f8b\u3067\u8a00\u3048\u3070\u3001\u30b3\u30f3\u30d3\u30cb\u4ee5\u5916\u306e\u5e97\u8217\u3092\u4f5c\u308b\u4e88\u5b9a\u3082\u306a\u304f\u3001\u4f1a\u8a08\u65b9\u6cd5\u3082\u6c7a\u307e\u3063\u305f\u3082\u306e\u306b\u3059\u308b\u5834\u5408\u3001\u30b3\u30f3\u30d3\u30cb\u30af\u30e9\u30b91<\/span><span>\u3064\u3092\u4f5c\u308c\u3070\u4e8b\u8db3\u308a\u307e\u3059\u3002<\/span><\/p>\n<p><span>\u3053\u3053\u3067\u306f\u3001\u62bd\u8c61\u30af\u30e9\u30b9\u3092\u901a\u3058\u3066\u305c\u3072\u30c1\u30fc\u30e0\u3067\u958b\u767a\u3059\u308b\u3053\u3068\u3092\u77e5\u3063\u3066\u3082\u3089\u3044\u305f\u3044\u3067\u3059\u3002<\/span><\/p>\n<p><span>\u62bd\u8c61\u30af\u30e9\u30b9\u306f\u30b5\u30d6\u30af\u30e9\u30b9\u3092\u4f5c\u308b\u305f\u3081\u306e\u30eb\u30fc\u30eb\u3092\u4f5c\u308b\u3053\u3068\u3060\u3068\u8a00\u3044\u307e\u3057\u305f\u304c\u3001\u305d\u308c\u306f\u30eb\u30fc\u30eb\u3092\u4f5c\u3063\u305f\u65b9\u304c\u8ab0\u306b\u3068\u3063\u3066\u3082\u5e78\u305b\u306a\u3053\u3068\u3060\u304b\u3089\u3067\u3059\u3002<\/span><\/p>\n<p><span>\u00a0<\/span><span>\u7a81\u7136\u3067\u3059\u304c\u3001Java<\/span><span>\u306e\u958b\u767a\u3092\u30c1\u30fc\u30e0\u3067\u884c\u3046\u3053\u3068\u3092\u30a4\u30e1\u30fc\u30b8\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u3042\u306a\u305f\u306f\u304a\u5e97\u30af\u30e9\u30b9\u306e\u8a2d\u8a08\u3092\u4efb\u3055\u308c\u307e\u3057\u305f\u3002<\/span><\/p>\n<p><span>\u304a\u5e97\u30af\u30e9\u30b9\u3092\u8a2d\u8a08\u3059\u308b\u969b\u306b\u3001\u3042\u306a\u305f\u306f\u30d7\u30ed\u30b0\u30e9\u30de\uff08\u3053\u3053\u3067\u306f\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3060\u3051\u3092\u884c\u3046\u4eba\uff09\u305f\u3061\u306b\u6700\u4f4e\u9650\u5b9f\u88c5\u3057\u3066\u307b\u3057\u3044\u6a5f\u80fd\u3092\u4f1d\u3048\u305f\u3044\u3068\u8003\u3048\u307e\u3059\u3002\u305d\u3053\u3067\u8a2d\u8a08\u66f8\u3084\u30b5\u30f3\u30d7\u30eb\u30af\u30e9\u30b9\u3092\u4f5c\u3063\u3066\u305d\u308c\u3092\u8a18\u8f09\u3057\u305f\u3068\u3057\u307e\u3059\u3002\u3067\u3059\u304c\u3001\u898b\u843d\u3068\u3059\u53ef\u80fd\u6027\u3084\u5b9f\u88c5\u6f0f\u308c\u304c\u767a\u751f\u3059\u308b\u30ea\u30b9\u30af\u306f\u5426\u5b9a\u3067\u304d\u307e\u305b\u3093\u3002\u30c6\u30b9\u30c8\u3067\u6f0f\u308c\u306a\u304f\u78ba\u8a8d\u3067\u304d\u308c\u3070\u3044\u3044\u3067\u3059\u304c\u3001\u624b\u623b\u308a\u306e\u30b3\u30b9\u30c8\u3092\u8003\u3048\u308b\u3068\u3046\u307e\u3044\u65b9\u6cd5\u3068\u306f\u8a00\u3048\u307e\u305b\u3093\u3002\u6f0f\u308c\u306a\u304f\u78ba\u8a8d\u3067\u304d\u305f\u3068\u3044\u3046\u62c5\u4fdd\u3092\u3069\u3046\u3084\u3063\u3066\u3068\u308b\u306e\u304b\u3082\u8003\u3048\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u3046\u3057\u3066\u3042\u306a\u305f\u306f\u5404\u304a\u5e97\u30af\u30e9\u30b9\u304c\u679c\u305f\u3057\u3066\u6b63\u3057\u304f\u4f5c\u3089\u308c\u308b\u304b\u4e0d\u5b89\u3092\u62b1\u3048\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/span><\/p>\n<p><span>\u3042\u306a\u305f\u304c\u8a2d\u8a08\u8005\u3068\u3057\u3066\u8cac\u4efb\u3092\u6301\u3063\u3066\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3068\u3044\u3046\u5f37\u3044\u610f\u5fd7\u3092\u6301\u3063\u3066\u78ba\u8a8d\u3059\u308b\u3068\u6c7a\u3081\u305f\u3068\u3057\u3066\u3082\u3001\u30c1\u30a7\u30c3\u30af\u304c\u5e38\u306b\u6b63\u3057\u3044\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u4eba\u9593\u306f\u30df\u30b9\u3092\u3057\u3061\u3083\u3046\u3082\u306e\u3067\u3059\u3002<\/span><\/p>\n<p><span>\u305d\u308c\u306b\u3044\u3064\u307e\u3067\u3082\u540c\u3058\u73fe\u5834\u306b\u3042\u306a\u305f\u304c\u3044\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u305d\u3057\u3066\u3001\u3042\u306a\u305f\u304c\u3044\u306a\u304f\u306a\u3063\u305f\u5f8c\u3082\u4fdd\u5b88\u3084\u62e1\u5f35\u306e\u305f\u3081\u958b\u767a\u304c\u7d9a\u304f\u3053\u3068\u306f\u5341\u5206\u306b\u8003\u3048\u3089\u308c\u307e\u3059\u3002<\/span><span>\u30d7\u30ed\u30b0\u30e9\u30de\u306b\u3068\u3063\u3066\u3082\u3001\u5fc5\u8981\u306a\u4ed5\u69d8\u3092\u7db2\u7f85\u3057\u3066\u3044\u308b\u3068\u601d\u3063\u3066\u3044\u3066\u3082\u81ea\u5206\u306e\u4f5c\u696d\u306b\u6f0f\u308c\u3084\u30df\u30b9\u304c\u306a\u3044\u304b\u3069\u3053\u304b\u4e0d\u5b89\u3092\u62b1\u3048\u305f\u307e\u307e\u4f5c\u696d\u3092\u884c\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/span><\/p>\n<p><span>\u304a\u4e92\u3044\u4e0d\u5b89\u3092\u62b1\u3048\u305f\u307e\u307e\u958b\u767a\u304c\u9032\u3081\u3089\u308c\u3066\u3044\u304f\u306e\u306f\u8ab0\u306b\u3068\u3063\u3066\u3082\u4e0d\u5e78\u306a\u3053\u3068\u3067\u3059\u3002<\/span><\/p>\n<p><span>\u3053\u3046\u3057\u305f\u4e0d\u5b89\u3082\u3001\u62bd\u8c61\u30af\u30e9\u30b9\u3092\u6b63\u3057\u304f\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u89e3\u6d88\u3055\u308c\u307e\u3059\u3002\u4eee\u306b\u8a2d\u8a08\u3057\u305f\u4eba\u304c\u3044\u306a\u304f\u306a\u3063\u3066\u3082\u3001\u7d99\u627f\u5143\u306b\u3059\u3079\u304d\u30af\u30e9\u30b9\u304c\u308f\u304b\u3063\u3066\u3044\u308c\u3070\u3001\u5fc5\u8981\u306a\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u304c\u6b63\u3057\u304f\u884c\u308f\u308c\u3066\u3044\u308b\u304b\u306f\u30b3\u30f3\u30d1\u30a4\u30e9\u304c\u30c1\u30a7\u30c3\u30af\u3057\u3066\u304f\u308c\u308b\u305f\u3081\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u306f\u4e0d\u5b89\u306a\u304f\u51e6\u7406\u5185\u5bb9\u306e\u5b9f\u88c5\u306b\u96c6\u4e2d\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<p><span>\u3053<\/span><span>\u306e\u3088\u3046\u306b\u3001\u62bd\u8c61\u30af\u30e9\u30b9\u306f\u8a2d\u8a08\u8005\u306e\u7acb\u5834\u304b\u3089\u898b\u308b\u3068\u3001\u540c\u3058\u30c1\u30fc\u30e0\u306e\u30e1\u30f3\u30d0\u30fc\u3084\u307e\u3060\u898b\u306c\u672a\u6765\u306e\u30e1\u30f3\u30d0\u30fc\u304c\u3069\u3046\u3059\u308c\u3070\u958b\u767a\u3084\u4fdd\u5b88\u3001\u62e1\u5f35\u3092\u52b9\u7387\u3088\u304f\u9032\u3081\u3089\u308c\u308b\u304b\u3092\u8003\u3048\u3066\u7528\u610f\u3059\u308b\u3082\u306e\u3067\u3059\u3002<\/span><\/p>\n<p><span>\u3042\u306a\u305f\u304c\u7d99\u627f\u3092\u5b66\u3093\u3060\u3068\u304d\u3001\u5dee\u5206\u3060\u3051\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3059\u308c\u3070\u3044\u3044\u306e\u3067\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u52b9\u7387\u304c\u4e0a\u304c\u308b\u3068\u3044\u3063\u305f\u3053\u3068\u3092\u76ee\u306b\u3057\u305f\u304b\u3068\u601d\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u81ea\u8eab\u306e\u4f5c\u696d\u3092\u52b9\u7387\u5316\u3055\u305b\u308b\u3053\u3068\u3092\u4e3b\u3068\u3057\u305f\u3082\u306e\u3067\u3059\u3002<\/span><\/p>\n<p><span>\u540c\u3058\u52b9\u7387\u3092\u4e0a\u3052\u308b\u65b9\u6cd5\u306b\u3057\u3066\u3082\u3001\u8a2d\u8a08\u8005\u3068\u30d7\u30ed\u30b0\u30e9\u30de\u306e\u7acb\u5834\u306e\u9055\u3044\u3067\u30a2\u30d7\u30ed\u30fc\u30c1\u306e\u4ed5\u65b9\u304c\u5909\u308f\u3063\u3066\u3044\u308b\u306e\u304c\u304a\u5206\u304b\u308a\u3067\u3057\u3087\u3046\u304b\u3002<\/span><\/p>\n<p><span>\u3057\u304b\u3057\u3001\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u9055\u3048\u3069\u4f7f\u3063\u3066\u3044\u308b\u77e5\u8b58\u3084\u6280\u8853\u306f\u5171\u901a\u3057\u3066\u3044\u308b\u3082\u306e\u304c\u307b\u3068\u3093\u3069\u3067\u3059\u3002\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u306f\u305d\u308c\u305e\u308c\u306e\u7acb\u5834\u306e\u9055\u3044\u3092\u7406\u89e3\u3057\u3001\u8003\u3048\u65b9\u3092\u5909\u3048\u308c\u3070\u3044\u3044\u306e\u3067\u3059\u3002<\/span><\/p>\n<p><span>Java\u3092\u5b66\u3073\u59cb\u3081\u305f\u3070\u304b\u308a\u306e\u4eba\u306b\u306f\u6709\u7528\u6027\u3084\u4f7f\u3044\u3069\u3053\u308d\u304c\u30a4\u30e1\u30fc\u30b8\u3057\u306b\u304f\u3044\u304b\u3068\u601d\u3044\u3001\u3053\u306e\u3088\u3046\u306a\u8a71\u3092\u3057\u307e\u3057\u305f\u3002<\/span><\/p>\n<h2><span id=\"i-3\"><span>\uff15\uff0e\u3055\u3044\u3054\u306b<\/span><\/span><\/h2>\n<p><span>\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u4f7f\u3044\u65b9\u3092\u901a\u3058\u3066\u3001\u30c1\u30fc\u30e0\u3067\u958b\u767a\u3092\u3059\u308b\u3053\u3068\u307e\u3067\u30a4\u30e1\u30fc\u30b8\u3057\u3066\u3082\u3089\u3044\u307e\u3057\u305f\u3002<\/span><\/p>\n<p><span>\u3053\u306e\u30a4\u30e1\u30fc\u30b8\u3059\u308b\u3068\u3044\u3046\u306e\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u3092\u7406\u89e3\u3059\u308b\u4e0a\u3067\u3068\u3066\u3082\u5927\u5207\u306a\u3053\u3068\u3067\u3059\u3002Java<\/span><span>\u306e\u6587\u6cd5\u3092\u7406\u89e3\u3059\u308b\u306e\u3068\u540c\u3058\u8003\u3048\u65b9\u3067\u306f\u3001\u5206\u304b\u308a\u306b\u304f\u3044\u3053\u3068\u304c\u3042\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u305d\u3093\u306a\u6642\u306f\u3001\u4f7f\u3046\u5834\u9762\u3084\u8ab0\u304c\u4f7f\u3046\u304b\u3001\u3069\u3093\u306a\u3068\u304d\u306b\u5fc5\u8981\u306a\u306e\u304b\u3092\u30a4\u30e1\u30fc\u30b8\u3057\u3066\u8003\u3048\u65b9\u3092\u5207\u308a\u66ff\u3048\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u4e0d\u601d\u8b70\u3068\u3059\u3093\u306a\u308a\u7406\u89e3\u304c\u9032\u3080\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/p>\n<p><span>\u3068\u3044\u3063\u3066\u3082\u3001\u3053\u3053\u3067\u7d39\u4ecb\u3057\u305f\u5185\u5bb9\u306f\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u307b\u3093\u306e\u4e00\u90e8\u3067\u3057\u304b\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u5148\u3001\u62bd\u8c61\u30af\u30e9\u30b9\u306b\u95a2\u9023\u3057\u305f\u5185\u5bb9\u3068\u3057\u3066\u306finterface\u3084\u30dd\u30ea\u30e2\u30eb\u30d5\u30a3\u30ba\u30e0\u3068\u3044\u3063\u305f\u6982\u5ff5\u304c\u51fa\u3066\u304d\u307e\u3059\u3002\u305d\u308c\u3089\u3092\u4f7f\u3044\u3053\u306a\u3059\u672a\u6765\u306e\u81ea\u5206\u3092\u30a4\u30e1\u30fc\u30b8\u3057\u306a\u304c\u3089\u697d\u3057\u3093\u3067\u5b66\u3093\u3067\u304f\u3060\u3055\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u3053\u3067\u306f\u3001Java\u306b\u304a\u3051\u308babstract\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002 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