{"id":4281,"date":"2024-03-14T12:42:17","date_gmt":"2024-03-14T03:42:17","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%a6%e3%80%81%e6%8f%8f%e7%94%bb%e3%83%9c%e3%83%bc%e3%83%89%e3%81%ae%e6%a9%9f%e8%83%bd%e3%82%92%e5%ae%9f%e8%a3%85%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/"},"modified":"2025-08-02T20:10:19","modified_gmt":"2025-08-02T11:10:19","slug":"java%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%a6%e3%80%81%e6%8f%8f%e7%94%bb%e3%83%9c%e3%83%bc%e3%83%89%e3%81%ae%e6%a9%9f%e8%83%bd%e3%82%92%e5%ae%9f%e8%a3%85%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%a6%e3%80%81%e6%8f%8f%e7%94%bb%e3%83%9c%e3%83%bc%e3%83%89%e3%81%ae%e6%a9%9f%e8%83%bd%e3%82%92%e5%ae%9f%e8%a3%85%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/","title":{"rendered":"Java\u3092\u4f7f\u7528\u3057\u3066\u3001\u63cf\u753b\u30dc\u30fc\u30c9\u306e\u6a5f\u80fd\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\u3002"},"content":{"rendered":"<p>Java\u306eSwing\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u3066\u3001\u30b7\u30f3\u30d7\u30eb\u306a\u30da\u30a4\u30f3\u30c8\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3067\u3001\u63cf\u753b\u6a5f\u80fd\u3092\u5b9f\u73fe\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u3001\u63cf\u753b\u6a5f\u80fd\u3092\u5b9f\u88c5\u3059\u308b\u305f\u3081\u306e\u57fa\u672c\u7684\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\uff1a<\/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.*;\r\n<span class=\"hljs-keyword\">import<\/span> java.awt.event.ActionEvent;\r\n<span class=\"hljs-keyword\">import<\/span> java.awt.event.ActionListener;\r\n<span class=\"hljs-keyword\">import<\/span> java.awt.event.MouseAdapter;\r\n<span class=\"hljs-keyword\">import<\/span> java.awt.event.MouseEvent;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">DrawingBoard<\/span> <span class=\"hljs-keyword\">extends<\/span> <span class=\"hljs-title class_\">JFrame<\/span> {\r\n\r\n    <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-type\">int<\/span> startX, startY, endX, endY;\r\n    <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-type\">Color<\/span> <span class=\"hljs-variable\">currentColor<\/span> <span class=\"hljs-operator\">=<\/span> Color.BLACK;\r\n\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-title function_\">DrawingBoard<\/span><span class=\"hljs-params\">()<\/span> {\r\n        setTitle(<span class=\"hljs-string\">\"Drawing Board\"<\/span>);\r\n        setSize(<span class=\"hljs-number\">800<\/span>, <span class=\"hljs-number\">600<\/span>);\r\n        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);\r\n\r\n        <span class=\"hljs-type\">JPanel<\/span> <span class=\"hljs-variable\">controlPanel<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">JPanel<\/span>();\r\n        <span class=\"hljs-type\">JButton<\/span> <span class=\"hljs-variable\">redButton<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">JButton<\/span>(<span class=\"hljs-string\">\"Red\"<\/span>);\r\n        redButton.addActionListener(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ActionListener<\/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_\">actionPerformed<\/span><span class=\"hljs-params\">(ActionEvent e)<\/span> {\r\n                currentColor = Color.RED;\r\n            }\r\n        });\r\n\r\n        <span class=\"hljs-type\">JButton<\/span> <span class=\"hljs-variable\">blackButton<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">JButton<\/span>(<span class=\"hljs-string\">\"Black\"<\/span>);\r\n        blackButton.addActionListener(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ActionListener<\/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_\">actionPerformed<\/span><span class=\"hljs-params\">(ActionEvent e)<\/span> {\r\n                currentColor = Color.BLACK;\r\n            }\r\n        });\r\n\r\n        controlPanel.add(redButton);\r\n        controlPanel.add(blackButton);\r\n\r\n        <span class=\"hljs-type\">JPanel<\/span> <span class=\"hljs-variable\">drawingPanel<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">JPanel<\/span>() {\r\n            <span class=\"hljs-meta\">@Override<\/span>\r\n            <span class=\"hljs-keyword\">protected<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">paintComponent<\/span><span class=\"hljs-params\">(Graphics g)<\/span> {\r\n                <span class=\"hljs-built_in\">super<\/span>.paintComponent(g);\r\n                g.setColor(currentColor);\r\n                g.drawLine(startX, startY, endX, endY);\r\n            }\r\n        };\r\n\r\n        drawingPanel.addMouseListener(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">MouseAdapter<\/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_\">mousePressed<\/span><span class=\"hljs-params\">(MouseEvent e)<\/span> {\r\n                startX = e.getX();\r\n                startY = e.getY();\r\n            }\r\n\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_\">mouseReleased<\/span><span class=\"hljs-params\">(MouseEvent e)<\/span> {\r\n                endX = e.getX();\r\n                endY = e.getY();\r\n                drawingPanel.repaint();\r\n            }\r\n        });\r\n\r\n        getContentPane().add(controlPanel, BorderLayout.NORTH);\r\n        getContentPane().add(drawingPanel, BorderLayout.CENTER);\r\n    }\r\n\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        SwingUtilities.invokeLater(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Runnable<\/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_\">run<\/span><span class=\"hljs-params\">()<\/span> {\r\n                <span class=\"hljs-type\">DrawingBoard<\/span> <span class=\"hljs-variable\">drawingBoard<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">DrawingBoard<\/span>();\r\n                drawingBoard.setVisible(<span class=\"hljs-literal\">true<\/span>);\r\n            }\r\n        });\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3001\u30b7\u30f3\u30d7\u30eb\u306a\u30da\u30a4\u30f3\u30c8\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u4f5c\u6210\u3057\u3066\u304a\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u63cf\u753b\u30dc\u30fc\u30c9\u4e0a\u3067\u76f4\u7dda\u3092\u63cf\u304f\u3053\u3068\u304c\u3067\u304d\u3001\u63cf\u753b\u3059\u308b\u8272\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u306f\u30de\u30a6\u30b9\u3092\u62bc\u3057\u305f\u307e\u307e\u30c9\u30e9\u30c3\u30b0\u3057\u3066\u7dda\u3092\u63cf\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u62e1\u5f35\u3057\u3066\u3001\u7570\u306a\u308b\u5f62\u72b6\u3092\u63cf\u753b\u3057\u305f\u308a\u3001\u7570\u306a\u308b\u30da\u30f3\u30b9\u30bf\u30a4\u30eb\u3092\u4f7f\u7528\u3057\u305f\u308a\u3059\u308b\u306a\u3069\u3001\u3088\u308a\u8907\u96d1\u306a\u63cf\u753b\u6a5f\u80fd\u3092\u5b9f\u73fe\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u306eSwing\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u3066\u3001\u30b7\u30f3\u30d7\u30eb\u306a\u30da\u30a4\u30f3\u30c8\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3067\u3001\u63cf\u753b\u6a5f\u80fd\u3092\u5b9f\u73fe\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u3001\u63cf\u753b\u6a5f\u80fd\u3092\u5b9f\u88c5\u3059\u308b\u305f\u3081\u306e\u57fa\u672c\u7684\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\uff1a import javax.sw [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-4281","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\u3092\u4f7f\u7528\u3057\u3066\u3001\u63cf\u753b\u30dc\u30fc\u30c9\u306e\u6a5f\u80fd\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\u3002 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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