{"id":16155,"date":"2017-03-04T10:13:48","date_gmt":"2017-03-04T01:13:48","guid":{"rendered":"http:\/\/www.sejuku.net\/blog\/?p=16155"},"modified":"2024-05-06T11:40:39","modified_gmt":"2024-05-06T02:40:39","slug":"%e3%80%903%e5%88%86java%e5%85%a5%e9%96%80%e3%80%91list%e2%86%92%e9%85%8d%e5%88%97%e3%80%81%e9%85%8d%e5%88%97%e2%86%92list%e3%81%ae%e5%a4%89%e6%8f%9b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.sejuku.net\/blog\/16155","title":{"rendered":"\u3010Java\u5165\u9580\u3011List\u21d4\u914d\u5217\u306e\u76f8\u4e92\u5909\u63db\u306f&#8221;toArray&#8221;\u3068&#8221;asList&#8221;\u3067OK\uff01"},"content":{"rendered":"<p>\u3053\u3093\u306b\u3061\u306f\uff01\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u4e2d\u6ca2\u3067\u3059\u3002<\/p>\n<p><div class=\"box_voice\">Java\u3067List\u304b\u3089\u914d\u5217(Array)\u306b\u5909\u63db\u3057\u305f\u308a\u3001\u914d\u5217\u304b\u3089List\u306b\u5909\u63db\u3057\u305f\u3044<\/div><\/p>\n<p>\u3068\u601d\u3063\u305f\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f\u3000\u5b9f\u306f\u305d\u306e\u3088\u3046\u306a\u5909\u63db\u3092\u4e00\u767a\u3067\u3067\u304d\u308b\u300ctoArray\u30e1\u30bd\u30c3\u30c9\u300d\u3068\u300casList\u30e1\u30bd\u30c3\u30c9\u300d\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\uff01\u3000\u4eca\u56de\u306f\u3001List\u3068\u914d\u5217\u3092\u76f8\u4e92\u306b\u5909\u63db\u3059\u308b\u65b9\u6cd5\u89e3\u8aac\u3057\u307e\u3059\uff01<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001<br \/>\n<div class=\"box01\"><\/p>\n<ul>\n<li><b>List\u3092\u914d\u5217\u306b\u5909\u63db\u3057\u305f\u3044<\/b><\/li>\n<li><b>\u914d\u5217\u3092List\u306b\u5909\u63db\u3057\u305f\u3044<\/b><\/li>\n<li><b>toArray\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u3092\u77e5\u308a\u305f\u3044<\/b><\/li>\n<li><b>asList\u30e1\u30bd\u30c3\u30c9\u306f\u3069\u3046\u3084\u3063\u3066\u4f7f\u3046\u306e\uff1f<\/b><\/li>\n<\/ul>\n<\/div>\n<p>\u3068\u3044\u3046\u57fa\u672c\u7684\u306a\u5185\u5bb9\u304b\u3089\u3001<br \/>\n<div class=\"box01\"><\/p>\n<ul>\n<li><b>toArray\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u306f\u3069\u3046\u3057\u305f\u3089\u3044\u3044\u306e\uff1f<\/b><\/li>\n<li><b>asList\u30e1\u30bd\u30c3\u30c9\u3067\u4f5c\u6210\u3057\u305f\u30ea\u30b9\u30c8\u306e\u30b5\u30a4\u30ba\u3092\u5909\u66f4\u3059\u308b\u306b\u306f\uff1f<\/b><\/li>\n<\/ul>\n<\/div>\n<p>\u306a\u3069\u306e\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9\u306b\u95a2\u3057\u3066\u3082\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u4eca\u56de\u306f\u3053\u308c\u3089\u306e\u65b9\u6cd5\u3092\u899a\u3048\u308b\u305f\u3081\u306b\u3001List\u3068\u914d\u5217\u3092\u76f8\u4e92\u306b\u5909\u63db\u3059\u308b\u65b9\u6cd5\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u307e\u3059\uff01<\/p>\n<p>\u306a\u304a\u3001Java\u306e\u8a18\u4e8b\u306b\u3064\u3044\u3066\u306f\u3001<a href=\"https:\/\/www.sejuku.net\/blog\/148098\" target=\"_blank\" rel=\"noopener\">\u3053\u3061\u3089<\/a>\u306b\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>List\u304b\u3089\u914d\u5217(Array)\u306b\u5909\u63db\u3059\u308b\u65b9\u6cd5<\/h2>\n<p>\u307e\u305a\u306f\u3001<strong>List\u304b\u3089\u914d\u5217(Array)\u306b\u5909\u63db\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac<\/strong>\u3057\u307e\u3059\uff01<\/p>\n<h3>toArray\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9<\/h3>\n<p>\u3053\u3053\u3067\u306f\u3001toArray\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002List\u304b\u3089\u914d\u5217\u306b\u5909\u63db\u3059\u308b\u306b\u306f\u3001\u300cjava.util.Collection.toArray\u30e1\u30bd\u30c3\u30c9\u300d\u3092\u4f7f\u3044\u307e\u3059\u3002toArray\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u3092\u899a\u3048\u308b\u305f\u3081\u306b\u3001\u6b21\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"lang:java decode:true \">import java.util.ArrayList;\r\nimport java.util.Arrays;\r\nimport java.util.List;\r\n\r\npublic class Main {\r\n\r\n    public static void main(String[] args) {\r\n\r\n        List&lt;String&gt; list = new ArrayList&lt;&gt;();\r\n        list.add(\"\u3055\");\r\n        list.add(\"\u3080\");\r\n        list.add(\"\u3089\");\r\n        list.add(\"\u3044\");\r\n\r\n        String[] array = list.toArray(new String[list.size()]);\r\n        \r\n        System.out.println(\"List = \" + list);\r\n        System.out.println(\"\u914d\u5217 = \" + Arrays.toString(array));\r\n    }\r\n}<\/pre>\n<p>[\u5b9f\u884c\u7d50\u679c]<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">List = [\u3055, \u3080, \u3089, \u3044]\r\n\u914d\u5217 = [\u3055, \u3080, \u3089, \u3044]<\/pre>\n<p>\u3053\u306e\u3088\u3046\u306btoArray\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001List\u304b\u3089\u914d\u5217\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\uff01\u3000\u3053\u3053\u3067\u306f\u914d\u5217\u306e\u30c7\u30fc\u30bf\u3092\u8868\u793a\u3059\u308b\u305f\u3081\u306btoString\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>\u5f15\u6570\u306e\u6ce8\u610f\u70b9<\/h3>\n<p>toArray\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u306b\u306f\u914d\u5217\u306e\u30b5\u30a4\u30ba\u3092\u6307\u5b9a\u3057\u307e\u3059\u304c\u3001\u300ctoArray(new String[0])\u300d\u3068\u300ctoArray(new String[list.size()])\u300d\u306e\u3069\u3061\u3089\u304c\u3044\u3044\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<p>\u3069\u3061\u3089\u3067\u66f8\u3044\u3066\u3082\u52d5\u4f5c\u306f\u3057\u307e\u3059\u304c\u3001\u300ctoArray(new String[0])\u300d\u306e\u5834\u5408\u306f\u30b5\u30a4\u30ba\u201d0\u201d\u306e\u914d\u5217\u3092\u4f5c\u3063\u305f\u5f8c\u306b\u3059\u3050\u524a\u9664\u3057\u3066\u3001\u65b0\u3057\u304f<strong>List\u3068\u540c\u3058\u30b5\u30a4\u30ba\u306e\u914d\u5217\u3092\u4f5c\u308a\u76f4\u3059\u305f\u3081\u51e6\u7406\u304c\u9045\u304f\u306a\u308a\u307e\u3059\uff01<\/strong><\/p>\n<p>\u305d\u306e\u305f\u3081\u3001toArray\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u306fList\u3068\u540c\u3058\u30b5\u30a4\u30ba\u3067\u914d\u5217\u3092\u4f5c\u308b\u305f\u3081\u306b\u300ctoArray(new String[list.size()])\u300d\u3068\u66f8\u304f\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\uff01<\/p>\n<h2>\u914d\u5217(Array)\u304b\u3089List\u306b\u5909\u63db\u3059\u308b\u65b9\u6cd5<\/h2>\n<p>\u3053\u3053\u3067\u306f<strong>\u914d\u5217\u304b\u3089List\u306b\u5909\u63db\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac<\/strong>\u3057\u307e\u3059\uff01<\/p>\n<h3>Arrays.asList\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9<\/h3>\n<p>\u914d\u5217\u304b\u3089List\u306b\u5909\u63db\u3059\u308b\u306b\u306f\u300cjava.util.Arrays.asList\u30e1\u30bd\u30c3\u30c9\u300d\u3092\u4f7f\u3044\u307e\u3059\u3002asList\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u3092\u899a\u3048\u308b\u305f\u3081\u306b\u3001\u6b21\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"lang:java decode:true \">import java.util.Arrays;\r\nimport java.util.List;\r\n\r\npublic class Main {\r\n\r\n    public static void main(String[] args) {\r\n\r\n        String[] array = { \"\u3055\", \"\u3080\", \"\u3089\", \"\u3044\" };\r\n        List&lt;String&gt; list = Arrays.asList(array);\r\n\r\n        System.out.println(\"\u914d\u5217 = \" + Arrays.toString(array));\r\n        System.out.println(\"List = \" + list);\r\n    }\r\n}<\/pre>\n<p>[\u5b9f\u884c\u7d50\u679c]<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">\u914d\u5217 = [\u3055, \u3080, \u3089, \u3044]\r\nList = [\u3055, \u3080, \u3089, \u3044]<\/pre>\n<p>\u3053\u306e\u3088\u3046\u306basList\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u914d\u5217\u304b\u3089List\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\uff01<\/p>\n<h3>\u305d\u306e\u307e\u307e\u3067\u306f\u30b5\u30a4\u30ba\u304c\u5909\u66f4\u3067\u304d\u306a\u3044\u306e\u3067\u6ce8\u610f\uff01<\/h3>\n<p>asList\u30e1\u30bd\u30c3\u30c9\u306f\u914d\u5217\u3092\u7c21\u5358\u306bList\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3066\u4fbf\u5229\u306a\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u304c\u3001\u6ce8\u610f\u70b9\u304c\u3042\u308a\u307e\u3059\uff01\u3000\u305d\u308c\u306f\u3001asList\u30e1\u30bd\u30c3\u30c9\u304c\u300c\u56fa\u5b9a\u30b5\u30a4\u30ba\u306eList\u300d\u3092\u8fd4\u3059\u306e\u3067\u3001<strong>List\u306e\u8981\u7d20\u3092\u8ffd\u52a0(add)\u3057\u305f\u308a\u524a\u9664(remove)\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u304f\u306a\u308b<\/strong>\u3068\u3044\u3046\u3053\u3068\u3067\u3059\uff01<\/p>\n<p>\u3082\u3057\u3001List\u306e\u30b5\u30a4\u30ba\u3092\u5909\u66f4\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u300cUnsupportedOperationException\u300d\u306e\u4f8b\u5916\u304c\u767a\u751f\u3059\u308b\u306e\u3067\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u305f\u3060\u3057\u3001\u3053\u308c\u304b\u3089\u89e3\u8aac\u3059\u308b\u65b9\u6cd5\u3092\u4f7f\u3048\u3070asList\u30e1\u30bd\u30c3\u30c9\u3067\u5909\u63db\u3057\u305fList\u306e\u30b5\u30a4\u30ba(\u8981\u7d20\u6570)\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u305c\u3072\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n<h3>asList\u30e1\u30bd\u30c3\u30c9\u3067\u5909\u63db\u3057\u305fList\u306e\u30b5\u30a4\u30ba(\u8981\u7d20\u6570)\u3092\u5909\u66f4\u3059\u308b\u65b9\u6cd5<\/h3>\n<p>\u3053\u3053\u3067\u306f\u3001<strong>asList\u30e1\u30bd\u30c3\u30c9\u3067\u5909\u63db\u3057\u305fList\u306e\u30b5\u30a4\u30ba(\u8981\u7d20\u6570)\u3092\u5909\u66f4\u3059\u308b\u65b9\u6cd5<\/strong>\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002asList\u30e1\u30bd\u30c3\u30c9\u3067\u5909\u63db\u3057\u305fList\u306f\u300c\u56fa\u5b9a\u30b5\u30a4\u30ba\u306eList\u300d\u306a\u306e\u3067\u3001\u305d\u306e\u307e\u307e\u3067\u306f\u30b5\u30a4\u30ba(\u8981\u7d20\u6570)\u3092\u5909\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>\u300c\u56fa\u5b9a\u30b5\u30a4\u30ba\u306eList\u300d\u3092\u300c\u30b5\u30a4\u30ba\u3092\u5909\u66f4\u3067\u304d\u308bList\u300d\u306b\u5909\u63db\u3059\u308b\u65b9\u6cd5\u3092\u6b21\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"lang:java decode:true \">import java.util.ArrayList;\r\nimport java.util.Arrays;\r\nimport java.util.List;\r\n\r\npublic class Main {\r\n\r\n    public static void main(String[] args) {\r\n\r\n        String[] array = { \"\u3055\", \"\u3080\", \"\u3089\", \"\u3044\" };\r\n        List&lt;String&gt; list = Arrays.asList(array);\r\n\r\n        \/\/ \u3053\u3053\u3067\u8981\u7d20\u3092\u8ffd\u52a0\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u300cUnsupportedOperationException\u300d\u306e\u4f8b\u5916\u304c\u767a\u751f\u3059\u308b\u3002\r\n        \/\/ list.add(\"\u587e\");\r\n\r\n        \/\/ \u6b21\u306e\u3088\u3046\u306b\u3059\u308c\u3070\u8981\u7d20\u306e\u8ffd\u52a0\u304c\u53ef\u80fd\u306b\u306a\u308b\u3002\r\n        List&lt;String&gt; newList = new ArrayList&lt;&gt;(list);\r\n        newList.add(\"\u587e\");\r\n\r\n        System.out.println(\"\u914d\u5217 = \" + Arrays.toString(array));\r\n        System.out.println(\"List = \" + list);\r\n        System.out.println(\"List = \" + newList);\r\n    }\r\n}<\/pre>\n<p>[\u5b9f\u884c\u7d50\u679c]<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">\u914d\u5217 = [\u3055, \u3080, \u3089, \u3044]\r\nList = [\u3055, \u3080, \u3089, \u3044]\r\nList = [\u3055, \u3080, \u3089, \u3044, \u587e]<\/pre>\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u65b0\u3057\u304f\u5ba3\u8a00\u3057\u305fList\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306b\u300c\u56fa\u5b9a\u30b5\u30a4\u30ba\u306eList\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u300c\u30b5\u30a4\u30ba\u3092\u5909\u66f4\u3067\u304d\u308bList\u300d\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\uff01<\/p>\n<h2>List\u3068\u914d\u5217\u306e\u9055\u3044\u3068\u306f<\/h2>\n<p><div class=\"img-caption\">\u914d\u5217\u3084List\u3092\u6271\u3063\u3066\u3044\u3066\u914d\u5217\u3068List\u306e\u9055\u3044\u304c\u30a4\u30de\u30a4\u30c1\u308f\u304b\u3089\u306a\u3044<\/div><\/p>\n<p>\u3068\u3044\u3063\u305f\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f\u3000\u6b21\u306e\u8a18\u4e8b\u3067\u306f\u3001<strong>List\u3068\u914d\u5217\u306e\u9055\u3044\u3092\u8a73\u3057\u304f\u89e3\u8aac<\/strong>\u3057\u3066\u3044\u308b\u306e\u3067\u305c\u3072\u78ba\u8a8d\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n            <a href=\"https:\/\/www.sejuku.net\/blog\/14443\" class=\"blog-card-anchor\">\n                <div class=\"blog-card\">\n                <div class=\"blog-card-content\">\n                    <div class=\"blog-card-thumbnail\">\n                    <img decoding=\"async\" class=\"blog-card-thumbnail-img\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2017\/08\/Java-ArrayToList-150x86.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">\u3010Java\u5165\u9580\u3011\u914d\u5217\u3068List\u306e\u5909\u63db(\u5ba3\u8a00\u306e\u9055\u3044\u30842\u6b21\u5143List\u3082\u89e3\u8aac)<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n<h2>List\u306e\u4f7f\u3044\u65b9\u7dcf\u3056\u3089\u3044<\/h2>\n<p>List\u306b\u306f\u4eca\u56de\u89e3\u8aac\u3057\u305f\u4ee5\u5916\u306b\u3082\u69d8\u3005\u306a\u4f7f\u3044\u65b9\u304c\u3042\u308a\u307e\u3059\uff01List\u306e\u69d8\u3005\u306a\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u306f\u3053\u3061\u3089\u3067\u307e\u3068\u3081\u3066\u3044\u308b\u306e\u3067\u3001\u305c\u3072\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n            <a href=\"https:\/\/www.sejuku.net\/blog\/20355\" class=\"blog-card-anchor\">\n                <div class=\"blog-card\">\n                <div class=\"blog-card-content\">\n                    <div class=\"blog-card-thumbnail\">\n                    <img decoding=\"async\" class=\"blog-card-thumbnail-img\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2017\/05\/shutterstock_595820321-150x86.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">Java\u306eList\u578b\u3068\u306f\uff01\uff1fArrayList\u306e\u4f7f\u3044\u65b9\u3092\u57fa\u790e\u306e\u57fa\u790e\u304b\u3089\u89e3\u8aac\uff01<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n<h2>\u914d\u5217\u306e\u4f7f\u3044\u65b9\u7dcf\u3056\u3089\u3044<\/h2>\n<p>\u914d\u5217\u306b\u306f\u4eca\u56de\u89e3\u8aac\u3057\u305f\u4ee5\u5916\u306b\u3082\u69d8\u3005\u306a\u4f7f\u3044\u65b9\u304c\u3042\u308a\u307e\u3059\uff01\u914d\u5217\u306e\u69d8\u3005\u306a\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u306f\u3053\u3061\u3089\u3067\u307e\u3068\u3081\u3066\u3044\u308b\u306e\u3067\u3001\u305c\u3072\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff01<br \/>\n            <a href=\"https:\/\/www.sejuku.net\/blog\/14461\" class=\"blog-card-anchor\">\n                <div class=\"blog-card\">\n                <div class=\"blog-card-content\">\n                    <div class=\"blog-card-thumbnail\">\n                    <img decoding=\"async\" class=\"blog-card-thumbnail-img\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2017\/01\/JAVA-144611-150x85.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">\u3010Java\u5165\u9580\u3011\u914d\u5217\u306e\u4f7f\u3044\u65b9\u7dcf\u307e\u3068\u3081(\u5ba3\u8a00\u3001\u521d\u671f\u5316\u3001\u8ffd\u52a0\u3001\u8981\u7d20\u6570)<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e745\u670810\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            <\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u3044\u304b\u304c\u3067\u3057\u305f\u304b\uff1f\u3000\u4eca\u56de\u306fList\u3068\u914d\u5217\u306e\u5909\u63db\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u3067List\u3068\u914d\u5217\u306e\u5909\u63db\u65b9\u6cd5\u304c\u308f\u304b\u3089\u306a\u304b\u3063\u305f\u308a\u3001asList\u30e1\u30bd\u30c3\u30c9\u3067\u5909\u63db\u3057\u305fList\u306e\u30b5\u30a4\u30ba\u304c\u5909\u66f4\u3067\u304d\u306a\u3044\u3068\u3044\u3063\u305f\u60a9\u307f\u3092\u89e3\u6c7a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\uff01<\/p>\n<p>\u3082\u3057\u3001List\u2192\u914d\u5217\u3001\u914d\u5217\u2192List\u306e\u5909\u63db\u3067\u300ctoArray\u30e1\u30bd\u30c3\u30c9\u300d\u3084\u300casList\u30e1\u30bd\u30c3\u30c9\u300d\u306e\u4f7f\u3044\u65b9\u3092\u5fd8\u308c\u3066\u3057\u307e\u3063\u305f\u3089\u3053\u306e\u8a18\u4e8b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u306d\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u3093\u306b\u3061\u306f\uff01\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u4e2d\u6ca2\u3067\u3059\u3002 Java\u3067List\u304b\u3089\u914d\u5217(Array)\u306b\u5909\u63db\u3057\u305f\u308a\u3001\u914d\u5217\u304b\u3089List\u306b\u5909\u63db\u3057\u305f\u3044 \u3068\u601d\u3063\u305f\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f\u3000\u5b9f\u306f\u305d\u306e\u3088\u3046\u306a\u5909\u63db\u3092\u4e00\u767a\u3067\u3067\u304d\u308b\u300ctoArray\u30e1\u30bd\u30c3\u30c9\u300d\u3068\u300casLi [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":38894,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"swell_btn_cv_data":"","footnotes":""},"categories":[2344],"tags":[67],"class_list":["post-16155","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java-study","tag-java"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ 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content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sejuku.net\/blog\/16155\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010Java\u5165\u9580\u3011List\u21d4\u914d\u5217\u306e\u76f8\u4e92\u5909\u63db\u306f&quot;toArray&quot;\u3068&quot;asList&quot;\u3067OK\uff01 | \u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0\" \/>\n<meta property=\"og:description\" content=\"\u3053\u306e\u8a18\u4e8b\u3067\u306f\u300c \u3010Java\u5165\u9580\u3011List\u21d4\u914d\u5217\u306e\u76f8\u4e92\u5909\u63db\u306f&quot;toArray&quot;\u3068&quot;asList&quot;\u3067OK\uff01 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