{"id":17352,"date":"2024-03-16T06:35:21","date_gmt":"2024-03-15T21:35:21","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e7%8a%b6%e6%85%8b%e3%83%a2%e3%83%bc%e3%83%89%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%a6%e3%80%81%e3%83%af%e3%83%bc%e3%82%af%e3%83%95%e3%83%ad%e3%83%bc%e3%82%92%e5%ae%9f%e8%a3%85%e3%81%99\/"},"modified":"2025-08-06T11:27:54","modified_gmt":"2025-08-06T02:27:54","slug":"java%e7%8a%b6%e6%85%8b%e3%83%a2%e3%83%bc%e3%83%89%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%a6%e3%80%81%e3%83%af%e3%83%bc%e3%82%af%e3%83%95%e3%83%ad%e3%83%bc%e3%82%92%e5%ae%9f%e8%a3%85%e3%81%99","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e7%8a%b6%e6%85%8b%e3%83%a2%e3%83%bc%e3%83%89%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%a6%e3%80%81%e3%83%af%e3%83%bc%e3%82%af%e3%83%95%e3%83%ad%e3%83%bc%e3%82%92%e5%ae%9f%e8%a3%85%e3%81%99\/","title":{"rendered":"Java\u72b6\u614b\u30e2\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p>Java\u3067\u306f\u3001\u72b6\u614b\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u7528\u3057\u3066\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u72b6\u614b\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u5185\u90e8\u306e\u72b6\u614b\u3092\u5909\u66f4\u3059\u308b\u3068\u304d\u306b\u305d\u306e\u632f\u308b\u821e\u3044\u3092\u5909\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u4e00\u7a2e\u306e\u884c\u52d5\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002<\/p>\n<p>\u6700\u521d\u306b\u3001\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306e\u72b6\u614b\u3092\u5b9a\u7fa9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u30023\u3064\u306e\u72b6\u614b\u3001\u3064\u307e\u308a\u672a\u5b8c\u4e86\u3001\u9032\u884c\u4e2d\u3001\u5b8c\u4e86\u304c\u3042\u308b\u3068\u4eee\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">interface<\/span> <span class=\"hljs-title class_\">WorkflowState<\/span> {\r\n    <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">handle<\/span><span class=\"hljs-params\">(WorkflowContext context)<\/span>;\r\n}\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">TodoState<\/span> <span class=\"hljs-keyword\">implements<\/span> <span class=\"hljs-title class_\">WorkflowState<\/span> {\r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">handle<\/span><span class=\"hljs-params\">(WorkflowContext context)<\/span> {\r\n        System.out.println(<span class=\"hljs-string\">\"\u5f53\u524d\u72b6\u6001\uff1a\u5f85\u529e\"<\/span>);\r\n        <span class=\"hljs-comment\">\/\/ \u5904\u7406\u5f85\u529e\u4e8b\u9879<\/span>\r\n        <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u4e0b\u4e00\u72b6\u6001<\/span>\r\n        context.setState(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">InProgressState<\/span>());\r\n    }\r\n}\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">InProgressState<\/span> <span class=\"hljs-keyword\">implements<\/span> <span class=\"hljs-title class_\">WorkflowState<\/span> {\r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">handle<\/span><span class=\"hljs-params\">(WorkflowContext context)<\/span> {\r\n        System.out.println(<span class=\"hljs-string\">\"\u5f53\u524d\u72b6\u6001\uff1a\u8fdb\u884c\u4e2d\"<\/span>);\r\n        <span class=\"hljs-comment\">\/\/ \u5904\u7406\u8fdb\u884c\u4e2d\u4e8b\u9879<\/span>\r\n        <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u4e0b\u4e00\u72b6\u6001<\/span>\r\n        context.setState(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">CompletedState<\/span>());\r\n    }\r\n}\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">CompletedState<\/span> <span class=\"hljs-keyword\">implements<\/span> <span class=\"hljs-title class_\">WorkflowState<\/span> {\r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">handle<\/span><span class=\"hljs-params\">(WorkflowContext context)<\/span> {\r\n        System.out.println(<span class=\"hljs-string\">\"\u5f53\u524d\u72b6\u6001\uff1a\u5df2\u5b8c\u6210\"<\/span>);\r\n        <span class=\"hljs-comment\">\/\/ \u5904\u7406\u5df2\u5b8c\u6210\u4e8b\u9879<\/span>\r\n        <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u4e0b\u4e00\u72b6\u6001<\/span>\r\n        context.setState(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">TodoState<\/span>());\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u6b21\u306f\u3001\u73fe\u5728\u306e\u72b6\u614b\u3092\u4fdd\u5b58\u3057\u3001\u51e6\u7406\u72b6\u614b\u3092\u6271\u3046\u65b9\u6cd5\u3092\u5b9a\u7fa9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">WorkflowContext<\/span> {\r\n    <span class=\"hljs-keyword\">private<\/span> WorkflowState state;\r\n    \r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-title function_\">WorkflowContext<\/span><span class=\"hljs-params\">()<\/span> {\r\n        <span class=\"hljs-built_in\">this<\/span>.state = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">TodoState<\/span>();\r\n    }\r\n    \r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">handle<\/span><span class=\"hljs-params\">()<\/span> {\r\n        state.handle(<span class=\"hljs-built_in\">this<\/span>);\r\n    }\r\n    \r\n    <span class=\"hljs-keyword\">public<\/span> WorkflowState <span class=\"hljs-title function_\">getState<\/span><span class=\"hljs-params\">()<\/span> {\r\n        <span class=\"hljs-keyword\">return<\/span> state;\r\n    }\r\n    \r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">setState<\/span><span class=\"hljs-params\">(WorkflowState state)<\/span> {\r\n        <span class=\"hljs-built_in\">this<\/span>.state = state;\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u6700\u5f8c\u306b\u3001\u79c1\u305f\u3061\u306f\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u4e0a\u4e0b\u6587\u3092\u4f7f\u7528\u3057\u3066\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u3092\u51e6\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">Main<\/span> {\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> {\r\n        <span class=\"hljs-type\">WorkflowContext<\/span> <span class=\"hljs-variable\">context<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">WorkflowContext<\/span>();\r\n        \r\n        context.handle(); <span class=\"hljs-comment\">\/\/ \u6253\u5370\uff1a\u5f53\u524d\u72b6\u6001\uff1a\u5f85\u529e<\/span>\r\n        context.handle(); <span class=\"hljs-comment\">\/\/ \u6253\u5370\uff1a\u5f53\u524d\u72b6\u6001\uff1a\u8fdb\u884c\u4e2d<\/span>\r\n        context.handle(); <span class=\"hljs-comment\">\/\/ \u6253\u5370\uff1a\u5f53\u524d\u72b6\u6001\uff1a\u5df2\u5b8c\u6210<\/span>\r\n        context.handle(); <span class=\"hljs-comment\">\/\/ \u6253\u5370\uff1a\u5f53\u524d\u72b6\u6001\uff1a\u5f85\u529e<\/span>\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u3053\u308c\u306b\u3088\u308a\u3001\u79c1\u305f\u3061\u306f\u72b6\u614b\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u7528\u3057\u3066\u5358\u7d14\u306a\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u3092\u5b9f\u88c5\u3057\u307e\u3057\u305f\u3002\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u3092\u51e6\u7406\u3059\u308b\u305f\u3073\u306b\u3001\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306f\u73fe\u5728\u306e\u72b6\u614b\u306b\u57fa\u3065\u3044\u3066\u9069\u5207\u306a\u51e6\u7406\u65b9\u6cd5\u3092\u547c\u3073\u51fa\u3057\u3001\u6b21\u306e\u72b6\u614b\u306b\u66f4\u65b0\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u3067\u306f\u3001\u72b6\u614b\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u7528\u3057\u3066\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u72b6\u614b\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u5185\u90e8\u306e\u72b6\u614b\u3092\u5909\u66f4\u3059\u308b\u3068\u304d\u306b\u305d\u306e\u632f\u308b\u821e\u3044\u3092\u5909\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u4e00\u7a2e\u306e\u884c\u52d5\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002 \u6700\u521d\u306b\u3001\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306e\u72b6 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-17352","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java\u72b6\u614b\u30e2\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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