{"id":120272,"date":"2024-03-23T21:53:56","date_gmt":"2024-03-23T12:53:56","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e7%8f%be%e5%9c%a8%e3%81%ae%e3%83%87%e3%82%a3%e3%83%ac%e3%82%af%e3%83%88%e3%83%aa%e5%86%85%e3%81%ae%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%81%ae%e5%86%85%e5%ae%b9%e3%82%92%e5%8f%96\/"},"modified":"2024-04-04T06:20:50","modified_gmt":"2024-04-03T21:20:50","slug":"java%e3%81%a7%e7%8f%be%e5%9c%a8%e3%81%ae%e3%83%87%e3%82%a3%e3%83%ac%e3%82%af%e3%83%88%e3%83%aa%e5%86%85%e3%81%ae%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%81%ae%e5%86%85%e5%ae%b9%e3%82%92%e5%8f%96","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e7%8f%be%e5%9c%a8%e3%81%ae%e3%83%87%e3%82%a3%e3%83%ac%e3%82%af%e3%83%88%e3%83%aa%e5%86%85%e3%81%ae%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%81%ae%e5%86%85%e5%ae%b9%e3%82%92%e5%8f%96\/","title":{"rendered":"java\u3067\u73fe\u5728\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>Java\u306eFile\u30af\u30e9\u30b9\u3067\u3001\u73fe\u5728\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u624b\u9806\u306b\u5f93\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li>System.getProperty(&#8220;user.dir&#8221;)\u3092\u4f7f\u7528\u3057\u3066\u30ab\u30ec\u30f3\u30c8\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u30d1\u30b9\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/li>\n<li>File \u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u7528\u3044\u3066\u3001\u73fe\u5728\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u8868\u3059 File \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u4f8b: File directory = new File(System.getProperty(&#8220;user.dir&#8221;));<\/li>\n<li>File\u30af\u30e9\u30b9\u306elistFiles()\u30e1\u30bd\u30c3\u30c9\u3067\u3001\u30ab\u30ec\u30f3\u30c8\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306e\u3059\u3079\u3066\u306e\u30d5\u30a1\u30a4\u30eb\u3068\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/li>\n<li>File\u914d\u5217\u3092\u8d70\u67fb\u3057\u3001File\u30af\u30e9\u30b9\u306e isFile()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u73fe\u5728\u306e\u8981\u7d20\u304c\u30d5\u30a1\u30a4\u30eb\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3059\u308b\u3002\u30d5\u30a1\u30a4\u30eb\u3067\u3042\u308c\u3070\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u8aad\u307f\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u4f8b\u3048\u3070\u3001File\u30af\u30e9\u30b9\u306e getAbsolutePath()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u30d5\u30a1\u30a4\u30eb\u306e\u7d76\u5bfe\u30d1\u30b9\u3092\u53d6\u5f97\u3057\u3001IO\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u4f7f\u3063\u3066\u30d5\u30a1\u30a4\u30eb\u5185\u5bb9\u3092\u8aad\u307f\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/li>\n<\/ol>\n<p>\u30b3\u30fc\u30c9\u306e\u4f8b\u3092\u4ee5\u4e0b\u306b\u793a\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> java.io.BufferedReader;\r\n<span class=\"hljs-keyword\">import<\/span> java.io.File;\r\n<span class=\"hljs-keyword\">import<\/span> java.io.FileReader;\r\n<span class=\"hljs-keyword\">import<\/span> java.io.IOException;\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">Main<\/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-comment\">\/\/ \u83b7\u53d6\u5f53\u524d\u76ee\u5f55\u7684\u8def\u5f84<\/span>\r\n<span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">currentDirectory<\/span> <span class=\"hljs-operator\">=<\/span> System.getProperty(<span class=\"hljs-string\">\"user.dir\"<\/span>);\r\n<span class=\"hljs-comment\">\/\/ \u521b\u5efa\u8868\u793a\u5f53\u524d\u76ee\u5f55\u7684File\u5bf9\u8c61<\/span>\r\n<span class=\"hljs-type\">File<\/span> <span class=\"hljs-variable\">directory<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">File<\/span>(currentDirectory);\r\n<span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u5f53\u524d\u76ee\u5f55\u4e0b\u7684\u6240\u6709\u6587\u4ef6\u548c\u76ee\u5f55<\/span>\r\nFile[] files = directory.listFiles();\r\n<span class=\"hljs-comment\">\/\/ \u904d\u5386\u6587\u4ef6\u6570\u7ec4<\/span>\r\n<span class=\"hljs-keyword\">for<\/span> (File file : files) {\r\n<span class=\"hljs-comment\">\/\/ \u5224\u65ad\u5f53\u524d\u5143\u7d20\u662f\u5426\u662f\u6587\u4ef6<\/span>\r\n<span class=\"hljs-keyword\">if<\/span> (file.isFile()) {\r\n<span class=\"hljs-keyword\">try<\/span> {\r\n<span class=\"hljs-comment\">\/\/ \u4f7f\u7528IO\u6d41\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9<\/span>\r\n<span class=\"hljs-type\">BufferedReader<\/span> <span class=\"hljs-variable\">reader<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">BufferedReader<\/span>(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">FileReader<\/span>(file));\r\nString line;\r\n<span class=\"hljs-keyword\">while<\/span> ((line = reader.readLine()) != <span class=\"hljs-literal\">null<\/span>) {\r\nSystem.out.println(line);\r\n}\r\nreader.close();\r\n} <span class=\"hljs-keyword\">catch<\/span> (IOException e) {\r\ne.printStackTrace();\r\n}\r\n}\r\n}\r\n}\r\n}\r\n<\/code><\/pre>\n<p>IOException\u4f8b\u5916\u306b\u5bfe\u5fdc\u3059\u308b\u51e6\u7406\u3092\u884c\u3044\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5805\u7262\u6027\u3092\u78ba\u4fdd\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u306eFile\u30af\u30e9\u30b9\u3067\u3001\u73fe\u5728\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u624b\u9806\u306b\u5f93\u3044\u307e\u3059\u3002 System.getProperty(&#8220;user.dir&#8221;)\u3092\u4f7f\u7528\u3057\u3066\u30ab\u30ec\u30f3\u30c8\u30c7\u30a3\u30ec\u30af [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-120272","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"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\u73fe\u5728\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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