{"id":17378,"date":"2024-03-16T06:39:53","date_gmt":"2024-03-15T21:39:53","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e7%94%bb%e5%83%8f%e3%82%92%e7%94%9f%e6%88%90%e3%81%97%e3%81%a6%e3%83%86%e3%82%ad%e3%82%b9%e3%83%88%e3%82%92%e8%bf%bd%e5%8a%a0%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%ef%bc%9f\/"},"modified":"2025-08-06T11:35:20","modified_gmt":"2025-08-06T02:35:20","slug":"java%e3%81%a7%e7%94%bb%e5%83%8f%e3%82%92%e7%94%9f%e6%88%90%e3%81%97%e3%81%a6%e3%83%86%e3%82%ad%e3%82%b9%e3%83%88%e3%82%92%e8%bf%bd%e5%8a%a0%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e7%94%bb%e5%83%8f%e3%82%92%e7%94%9f%e6%88%90%e3%81%97%e3%81%a6%e3%83%86%e3%82%ad%e3%82%b9%e3%83%88%e3%82%92%e8%bf%bd%e5%8a%a0%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%ef%bc%9f\/","title":{"rendered":"Java\u3067\u753b\u50cf\u3092\u751f\u6210\u3057\u3066\u30c6\u30ad\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5\u306f\uff1f"},"content":{"rendered":"<p>\u753b\u50cf\u3092\u751f\u6210\u3057\u3066\u6587\u5b57\u3092\u8ffd\u52a0\u3059\u308b\u306b\u306f\u3001Java\u306e\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u30b9\u51e6\u7406\u30e9\u30a4\u30d6\u30e9\u30ea\u3001\u4f8b\u3048\u3070Java AWT\uff08Abstract Window Toolkit\uff09\u3084Java Graphics2D\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Java\u3067\u753b\u50cf\u3092\u751f\u6210\u3057\u3066\u30c6\u30ad\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3059\u7c21\u5358\u306a\u30b3\u30fc\u30c9\u4f8b\u304c\u4ee5\u4e0b\u306b\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> java.awt.Color;\r\n<span class=\"hljs-keyword\">import<\/span> java.awt.Font;\r\n<span class=\"hljs-keyword\">import<\/span> java.awt.Graphics;\r\n<span class=\"hljs-keyword\">import<\/span> java.awt.Graphics2D;\r\n<span class=\"hljs-keyword\">import<\/span> java.awt.image.BufferedImage;\r\n<span class=\"hljs-keyword\">import<\/span> java.io.File;\r\n<span class=\"hljs-keyword\">import<\/span> javax.imageio.ImageIO;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">ImageGenerator<\/span> {\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        <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">width<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-number\">300<\/span>;\r\n        <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">height<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-number\">200<\/span>;\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u521b\u5efa\u4e00\u4e2a BufferedImage \u5bf9\u8c61\uff0c\u5bbd\u5ea6\u4e3a width\uff0c\u9ad8\u5ea6\u4e3a height\uff0c\u4f7f\u7528 RGB \u989c\u8272\u6a21\u5f0f<\/span>\r\n        <span class=\"hljs-type\">BufferedImage<\/span> <span class=\"hljs-variable\">image<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">BufferedImage<\/span>(width, height, BufferedImage.TYPE_INT_RGB);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u83b7\u53d6 Graphics2D \u5bf9\u8c61\uff0c\u7528\u4e8e\u7ed8\u5236\u56fe\u5f62<\/span>\r\n        <span class=\"hljs-type\">Graphics2D<\/span> <span class=\"hljs-variable\">g2d<\/span> <span class=\"hljs-operator\">=<\/span> image.createGraphics();\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u80cc\u666f\u989c\u8272\u4e3a\u767d\u8272<\/span>\r\n        g2d.setColor(Color.WHITE);\r\n        g2d.fillRect(<span class=\"hljs-number\">0<\/span>, <span class=\"hljs-number\">0<\/span>, width, height);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u5b57\u4f53\u6837\u5f0f\u548c\u5927\u5c0f<\/span>\r\n        <span class=\"hljs-type\">Font<\/span> <span class=\"hljs-variable\">font<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Font<\/span>(<span class=\"hljs-string\">\"Arial\"<\/span>, Font.BOLD, <span class=\"hljs-number\">20<\/span>);\r\n        g2d.setFont(font);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u6587\u5b57\u989c\u8272\u4e3a\u9ed1\u8272<\/span>\r\n        g2d.setColor(Color.BLACK);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u5728\u56fe\u7247\u4e0a\u7ed8\u5236\u6587\u5b57<\/span>\r\n        <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">text<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-string\">\"Hello, World!\"<\/span>;\r\n        <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">textWidth<\/span> <span class=\"hljs-operator\">=<\/span> g2d.getFontMetrics().stringWidth(text);\r\n        <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">x<\/span> <span class=\"hljs-operator\">=<\/span> (width - textWidth) \/ <span class=\"hljs-number\">2<\/span>;\r\n        <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">y<\/span> <span class=\"hljs-operator\">=<\/span> height \/ <span class=\"hljs-number\">2<\/span>;\r\n        g2d.drawString(text, x, y);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u91ca\u653e\u8d44\u6e90<\/span>\r\n        g2d.dispose();\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u4fdd\u5b58\u751f\u6210\u7684\u56fe\u7247<\/span>\r\n        <span class=\"hljs-keyword\">try<\/span> {\r\n            <span class=\"hljs-type\">File<\/span> <span class=\"hljs-variable\">output<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">File<\/span>(<span class=\"hljs-string\">\"output.png\"<\/span>);\r\n            ImageIO.write(image, <span class=\"hljs-string\">\"png\"<\/span>, output);\r\n            System.out.println(<span class=\"hljs-string\">\"\u56fe\u7247\u5df2\u751f\u6210\uff01\"<\/span>);\r\n        } <span class=\"hljs-keyword\">catch<\/span> (Exception e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u306f\u3001\u5e45300\u3001\u9ad8\u3055200\u306e\u767d\u3044\u80cc\u666f\u753b\u50cf\u3092\u751f\u6210\u3057\u3001\u4e2d\u592e\u306b&#8221;Hello, World!&#8221;\u3068\u3044\u3046\u30c6\u30ad\u30b9\u30c8\u3092\u63cf\u753b\u3057\u307e\u3059\u3002\u751f\u6210\u3055\u308c\u305f\u753b\u50cf\u306f\u3001&#8221;output.png&#8221;\u3068\u3044\u3046\u540d\u524d\u306e\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>Java \u958b\u767a\u74b0\u5883\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3001\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3092&#8221;ImageGenerator.java&#8221;\u3068\u3044\u3046\u540d\u524d\u3067\u4fdd\u5b58\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002Java \u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u5b9f\u884c\u3059\u308b\u306b\u306f\u3001\u30b3\u30de\u30f3\u30c9javac ImageGenerator.java\u3067\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3001\u305d\u306e\u5f8c\u306b\u30b3\u30de\u30f3\u30c9java ImageGenerator\u3067\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002\u751f\u6210\u3055\u308c\u305f\u753b\u50cf\u306f\u73fe\u5728\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001\u753b\u50cf\u306e\u30b5\u30a4\u30ba\u3001\u80cc\u666f\u8272\u3001\u30d5\u30a9\u30f3\u30c8\u30b9\u30bf\u30a4\u30eb\u3068\u30b5\u30a4\u30ba\u3001\u304a\u3088\u3073\u63cf\u304b\u308c\u308b\u30c6\u30ad\u30b9\u30c8\u306e\u5185\u5bb9\u3084\u4f4d\u7f6e\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u753b\u50cf\u3092\u751f\u6210\u3057\u3066\u6587\u5b57\u3092\u8ffd\u52a0\u3059\u308b\u306b\u306f\u3001Java\u306e\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u30b9\u51e6\u7406\u30e9\u30a4\u30d6\u30e9\u30ea\u3001\u4f8b\u3048\u3070Java AWT\uff08Abstract Window Toolkit\uff09\u3084Java Graphics2D\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 Java\u3067\u753b\u50cf [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-17378","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\u3067\u753b\u50cf\u3092\u751f\u6210\u3057\u3066\u30c6\u30ad\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5\u306f\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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