{"id":76057,"date":"2024-03-20T16:34:58","date_gmt":"2024-03-20T07:34:58","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%82%aa%e3%83%96%e3%82%b8%e3%82%a7%e3%82%af%e3%83%88%e3%81%ae%e3%83%87%e3%82%a3%e3%83%bc%e3%83%97%e3%82%b3%e3%83%94%e3%83%bc%e3%81%ae%e5%ae%9f%e8%a3%85%e6%96%b9%e6%b3%95\/"},"modified":"2025-08-11T14:57:40","modified_gmt":"2025-08-11T05:57:40","slug":"java%e3%82%aa%e3%83%96%e3%82%b8%e3%82%a7%e3%82%af%e3%83%88%e3%81%ae%e3%83%87%e3%82%a3%e3%83%bc%e3%83%97%e3%82%b3%e3%83%94%e3%83%bc%e3%81%ae%e5%ae%9f%e8%a3%85%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%82%aa%e3%83%96%e3%82%b8%e3%82%a7%e3%82%af%e3%83%88%e3%81%ae%e3%83%87%e3%82%a3%e3%83%bc%e3%83%97%e3%82%b3%e3%83%94%e3%83%bc%e3%81%ae%e5%ae%9f%e8%a3%85%e6%96%b9%e6%b3%95\/","title":{"rendered":"Java\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc\u306e\u5b9f\u88c5\u65b9\u6cd5"},"content":{"rendered":"<p>Java \u3067\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc\u3092\u5b9f\u73fe\u3059\u308b\u65b9\u6cd5\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ol>\n<li>Object.clone()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\uff1aObject\u30af\u30e9\u30b9\u306f\u4fdd\u8b77\u3055\u308c\u305fclone()\u30e1\u30bd\u30c3\u30c9\u3092\u63d0\u4f9b\u3057\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u6d45\u3044\u30b3\u30d4\u30fc\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u6df1\u3044\u30b3\u30d4\u30fc\u3092\u5b9f\u88c5\u3059\u308b\u5834\u5408\u306f\u3001\u30b3\u30d4\u30fc\u3059\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30af\u30e9\u30b9\u306bCloneable\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3057\u3001clone()\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002clone()\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001\u65b0\u3057\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001\u5143\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5c5e\u6027\u5024\u3092\u65b0\u3057\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5c5e\u6027\u306b\u5272\u308a\u5f53\u3066\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u4f8b\u3068\u3057\u3066\u30b3\u30fc\u30c9:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">MyClass<\/span> <span class=\"hljs-keyword\">implements<\/span> <span class=\"hljs-title class_\">Cloneable<\/span> {\r\n    <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-type\">int<\/span> id;\r\n    <span class=\"hljs-keyword\">private<\/span> String name;\r\n    \r\n    <span class=\"hljs-comment\">\/\/ \u6784\u9020\u65b9\u6cd5<\/span>\r\n    \r\n    <span class=\"hljs-comment\">\/\/ getter\u548csetter\u65b9\u6cd5<\/span>\r\n    \r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">protected<\/span> Object <span class=\"hljs-title function_\">clone<\/span><span class=\"hljs-params\">()<\/span> <span class=\"hljs-keyword\">throws<\/span> CloneNotSupportedException {\r\n        <span class=\"hljs-type\">MyClass<\/span> <span class=\"hljs-variable\">cloned<\/span> <span class=\"hljs-operator\">=<\/span> (MyClass) <span class=\"hljs-built_in\">super<\/span>.clone();\r\n        <span class=\"hljs-comment\">\/\/ \u5bf9\u4e8e\u5f15\u7528\u7c7b\u578b\u7684\u5c5e\u6027\uff0c\u9700\u8981\u8fdb\u884c\u6df1\u62f7\u8d1d<\/span>\r\n        cloned.name = <span class=\"hljs-built_in\">this<\/span>.name.clone();\r\n        <span class=\"hljs-keyword\">return<\/span> cloned;\r\n    }\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u53ef\u80fd\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u73fe\u3059\u308b\uff1a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30d0\u30a4\u30c8\u30b9\u30c8\u30ea\u30fc\u30e0\u306b\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3057\u3001\u30d0\u30a4\u30c8\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u65b0\u3057\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u30c7\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3057\u307e\u3059\u3002\u3053\u306e\u65b9\u6cd5\u3067\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u3059\u3079\u3066\u306e\u30e1\u30f3\u30d0\u30fc\u5909\u6570\u304c\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u53ef\u80fd\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> java.io.*;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">MyClass<\/span> <span class=\"hljs-keyword\">implements<\/span> <span class=\"hljs-title class_\">Serializable<\/span> {\r\n    <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-type\">int<\/span> id;\r\n    <span class=\"hljs-keyword\">private<\/span> String name;\r\n    \r\n    <span class=\"hljs-comment\">\/\/ \u6784\u9020\u65b9\u6cd5<\/span>\r\n    \r\n    <span class=\"hljs-comment\">\/\/ getter\u548csetter\u65b9\u6cd5<\/span>\r\n    \r\n    <span class=\"hljs-keyword\">public<\/span> MyClass <span class=\"hljs-title function_\">deepCopy<\/span><span class=\"hljs-params\">()<\/span> <span class=\"hljs-keyword\">throws<\/span> IOException, ClassNotFoundException {\r\n        <span class=\"hljs-type\">ByteArrayOutputStream<\/span> <span class=\"hljs-variable\">bos<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ByteArrayOutputStream<\/span>();\r\n        <span class=\"hljs-type\">ObjectOutputStream<\/span> <span class=\"hljs-variable\">oos<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ObjectOutputStream<\/span>(bos);\r\n        oos.writeObject(<span class=\"hljs-built_in\">this<\/span>);\r\n        \r\n        <span class=\"hljs-type\">ByteArrayInputStream<\/span> <span class=\"hljs-variable\">bis<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ByteArrayInputStream<\/span>(bos.toByteArray());\r\n        <span class=\"hljs-type\">ObjectInputStream<\/span> <span class=\"hljs-variable\">ois<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ObjectInputStream<\/span>(bis);\r\n        <span class=\"hljs-keyword\">return<\/span> (MyClass) ois.readObject();\r\n    }\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30fc\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\uff1aApache Commons\u306eSerializationUtils\u30af\u30e9\u30b9\u306a\u3069\u306e\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30fc\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc\u306e\u5b9f\u88c5\u304c\u53ef\u80fd\u3067\u3059\u3002<\/li>\n<\/ol>\n<p>\u305d\u308c\u306f\u30cd\u30a4\u30c6\u30a3\u30d6\u306b\u306f\u975e\u5e38\u306b\u7c21\u5358\u306a\u6587\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> org.apache.commons.lang3.SerializationUtils;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">MyClass<\/span> {\r\n    <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-type\">int<\/span> id;\r\n    <span class=\"hljs-keyword\">private<\/span> String name;\r\n    \r\n    <span class=\"hljs-comment\">\/\/ \u6784\u9020\u65b9\u6cd5<\/span>\r\n    \r\n    <span class=\"hljs-comment\">\/\/ getter\u548csetter\u65b9\u6cd5<\/span>\r\n    \r\n    <span class=\"hljs-keyword\">public<\/span> MyClass <span class=\"hljs-title function_\">deepCopy<\/span><span class=\"hljs-params\">()<\/span> {\r\n        <span class=\"hljs-keyword\">return<\/span> SerializationUtils.clone(<span class=\"hljs-built_in\">this<\/span>);\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u5143\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30f3\u30d0\u5909\u6570\u304c\u4e0d\u5909\u578b\uff08\u57fa\u672c\u30c7\u30fc\u30bf\u578b\u3001String\u306a\u3069\uff09\u306e\u5834\u5408\u306f\u3001\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc\u3092\u884c\u3046\u5fc5\u8981\u306f\u306a\u304f\u3001\u76f4\u63a5\u4ee3\u5165\u3067\u304d\u307e\u3059\u3002\u53ef\u5909\u578b\uff08\u914d\u5217\u3001\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3001\u305d\u306e\u4ed6\u306e\u30ab\u30b9\u30bf\u30e0\u30af\u30e9\u30b9\u306a\u3069\uff09\u306e\u5834\u5408\u306f\u3001\u65b0\u3057\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u5143\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5c5e\u6027\u5024\u304c\u76f8\u4e92\u306b\u5f71\u97ff\u3092\u53d7\u3051\u306a\u3044\u3088\u3046\u306b\u3001\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc\u3092\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java \u3067\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc\u3092\u5b9f\u73fe\u3059\u308b\u65b9\u6cd5\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 Object.clone()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\uff1aObject\u30af\u30e9\u30b9\u306f\u4fdd\u8b77\u3055\u308c\u305fclone()\u30e1\u30bd\u30c3\u30c9\u3092\u63d0\u4f9b\u3057\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u6d45\u3044\u30b3\u30d4\u30fc\u3092\u4f5c\u6210\u3059\u308b\u305f [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-76057","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\/ 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content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc\u306e\u5b9f\u88c5\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"Java\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc\u306e\u5b9f\u88c5\u65b9\u6cd5\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc\u306e\u5b9f\u88c5\u65b9\u6cd5\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-20T07:34:58+00:00\" \/>\n<meta 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