{"id":76199,"date":"2024-03-20T16:47:15","date_gmt":"2024-03-20T07:47:15","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ae%e3%83%a9%e3%82%b8%e3%82%aa%e3%83%9c%e3%82%bf%e3%83%b3%e3%81%ae%e3%83%aa%e3%82%b9%e3%83%8a%e3%82%a4%e3%83%99%e3%83%b3%e3%83%88%e3%82%92%e8%a8%ad%e5%ae%9a%e3%81%99%e3%82%8b%e6%96%b9\/"},"modified":"2025-08-11T15:37:54","modified_gmt":"2025-08-11T06:37:54","slug":"java%e3%81%ae%e3%83%a9%e3%82%b8%e3%82%aa%e3%83%9c%e3%82%bf%e3%83%b3%e3%81%ae%e3%83%aa%e3%82%b9%e3%83%8a%e3%82%a4%e3%83%99%e3%83%b3%e3%83%88%e3%82%92%e8%a8%ad%e5%ae%9a%e3%81%99%e3%82%8b%e6%96%b9","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ae%e3%83%a9%e3%82%b8%e3%82%aa%e3%83%9c%e3%82%bf%e3%83%b3%e3%81%ae%e3%83%aa%e3%82%b9%e3%83%8a%e3%82%a4%e3%83%99%e3%83%b3%e3%83%88%e3%82%92%e8%a8%ad%e5%ae%9a%e3%81%99%e3%82%8b%e6%96%b9\/","title":{"rendered":"Java\u306e\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u306e\u30ea\u30b9\u30ca\u30a4\u30d9\u30f3\u30c8\u3092\u8a2d\u5b9a\u306e\u65b9\u6cd5"},"content":{"rendered":"<p>Java\u3067\u306f\u3001ItemListener\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u30ea\u30c3\u30b9\u30f3\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u3001\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u30ea\u30c3\u30b9\u30f3\u3059\u308b\u305f\u3081\u306e\u8a2d\u5b9a\u624b\u9806\u3067\u3059\u3002<\/p>\n<ol>\n<li>\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001\u30e9\u30d9\u30eb\u3092\uff08\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\uff09\u8a2d\u5b9a\u3059\u308b\uff1a<\/li>\n<li>JRadioButton radioButton = new JRadioButton(&#8220;\u30e9\u30d9\u30eb&#8221;);<\/li>\n<li>ButtonGroup \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001\u30e9\u30b8\u30aa \u30dc\u30bf\u30f3\u3092\u305d\u306e\u30b0\u30eb\u30fc\u30d7\u306b\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/li>\n<li>ButtonGroup buttonGroup = new ButtonGroup();<br \/>\nbuttonGroup.add(radioButton);<\/li>\n<li>\u300c\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u306e\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u7528ItemListener\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u300d<\/li>\n<li>ItemListener itemListener = new ItemListener() {<br \/>\npublic void itemStateChanged(ItemEvent e) {<br \/>\n\/\/ \u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u306e\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u306e\u30b3\u30fc\u30c9<br \/>\n}<br \/>\n};<\/li>\n<li>\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u306b\u30a2\u30a4\u30c6\u30e0\u30ea\u30b9\u30ca\u30fc\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8ffd\u52a0\u3059\u308b:<\/li>\n<li>radioButton.addItemListener(itemListener);<\/li>\n<\/ol>\n<p>\u5b8c\u5168\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u4ee5\u4e0b\u306b\u8a18\u8f09\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> javax.swing.*;\r\n<span class=\"hljs-keyword\">import<\/span> java.awt.event.*;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">RadioButtonDemo<\/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\">JFrame<\/span> <span class=\"hljs-variable\">frame<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">JFrame<\/span>(<span class=\"hljs-string\">\"RadioButton Demo\"<\/span>);\r\n\r\n        <span class=\"hljs-type\">JRadioButton<\/span> <span class=\"hljs-variable\">radioButton<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">JRadioButton<\/span>(<span class=\"hljs-string\">\"Option 1\"<\/span>);\r\n\r\n        <span class=\"hljs-type\">ButtonGroup<\/span> <span class=\"hljs-variable\">buttonGroup<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ButtonGroup<\/span>();\r\n        buttonGroup.add(radioButton);\r\n\r\n        <span class=\"hljs-type\">ItemListener<\/span> <span class=\"hljs-variable\">itemListener<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ItemListener<\/span>() {\r\n            <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">itemStateChanged<\/span><span class=\"hljs-params\">(ItemEvent e)<\/span> {\r\n                <span class=\"hljs-keyword\">if<\/span> (e.getStateChange() == ItemEvent.SELECTED) {\r\n                    System.out.println(<span class=\"hljs-string\">\"Option 1 selected\"<\/span>);\r\n                }\r\n            }\r\n        };\r\n\r\n        radioButton.addItemListener(itemListener);\r\n\r\n        frame.add(radioButton);\r\n        frame.setSize(<span class=\"hljs-number\">300<\/span>, <span class=\"hljs-number\">200<\/span>);\r\n        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);\r\n        frame.setVisible(<span class=\"hljs-literal\">true<\/span>);\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u306f\u3001\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u306e\u72b6\u614b\u304c\u672a\u9078\u629e\u304b\u3089\u9078\u629e\u306b\u5909\u5316\u3057\u305f\u3068\u304d\u306b ItemEvent.SELECTED \u30a4\u30d9\u30f3\u30c8\u304c\u767a\u751f\u3057\u3001\u300cOption 1 selected\u300d\u304c\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u51fa\u529b\u3055\u308c\u307e\u3059\u3002\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u306e\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u3092\u884c\u3046\u30b3\u30fc\u30c9\u306f\u3001itemStateChanged \u30e1\u30bd\u30c3\u30c9\u5185\u306b\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u3067\u306f\u3001ItemListener\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u30ea\u30c3\u30b9\u30f3\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u3001\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u30ea\u30c3\u30b9\u30f3\u3059\u308b\u305f\u3081\u306e\u8a2d\u5b9a\u624b\u9806\u3067\u3059\u3002 \u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001\u30e9\u30d9\u30eb\u3092\uff08\u30aa [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,18],"class_list":["post-76199","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-18"],"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\u306e\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u306e\u30ea\u30b9\u30ca\u30a4\u30d9\u30f3\u30c8\u3092\u8a2d\u5b9a\u306e\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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