{"id":17583,"date":"2024-03-16T07:10:27","date_gmt":"2024-03-15T22:10:27","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7properties%e8%a8%ad%e5%ae%9a%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%92%e8%aa%ad%e3%81%bf%e6%9b%b8%e3%81%8d%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99\/"},"modified":"2025-08-06T12:33:12","modified_gmt":"2025-08-06T03:33:12","slug":"java%e3%81%a7properties%e8%a8%ad%e5%ae%9a%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%92%e8%aa%ad%e3%81%bf%e6%9b%b8%e3%81%8d%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7properties%e8%a8%ad%e5%ae%9a%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%92%e8%aa%ad%e3%81%bf%e6%9b%b8%e3%81%8d%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99\/","title":{"rendered":"Java\u3067Properties\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p>Java\u3067\u306f\u3001Properties\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u66f8\u304d\u306b\u306fjava.util.Properties\u30af\u30e9\u30b9\u304c\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u3001\u7c21\u5358\u306a\u4f8b\u3067\u3059\uff1a<\/p>\n<p>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> java.io.FileInputStream;\r\n<span class=\"hljs-keyword\">import<\/span> java.io.IOException;\r\n<span class=\"hljs-keyword\">import<\/span> java.util.Properties;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">PropertiesExample<\/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\">Properties<\/span> <span class=\"hljs-variable\">properties<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Properties<\/span>();\r\n        <span class=\"hljs-keyword\">try<\/span> {\r\n            <span class=\"hljs-comment\">\/\/ \u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6<\/span>\r\n            <span class=\"hljs-type\">FileInputStream<\/span> <span class=\"hljs-variable\">fileInputStream<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">FileInputStream<\/span>(<span class=\"hljs-string\">\"config.properties\"<\/span>);\r\n            properties.load(fileInputStream);\r\n            fileInputStream.close();\r\n\r\n            <span class=\"hljs-comment\">\/\/ \u8bfb\u53d6\u914d\u7f6e\u9879<\/span>\r\n            <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">username<\/span> <span class=\"hljs-operator\">=<\/span> properties.getProperty(<span class=\"hljs-string\">\"username\"<\/span>);\r\n            <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">password<\/span> <span class=\"hljs-operator\">=<\/span> properties.getProperty(<span class=\"hljs-string\">\"password\"<\/span>);\r\n\r\n            System.out.println(<span class=\"hljs-string\">\"Username: \"<\/span> + username);\r\n            System.out.println(<span class=\"hljs-string\">\"Password: \"<\/span> + password);\r\n\r\n        } <span class=\"hljs-keyword\">catch<\/span> (IOException e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u3080\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> java.io.FileOutputStream;\r\n<span class=\"hljs-keyword\">import<\/span> java.io.IOException;\r\n<span class=\"hljs-keyword\">import<\/span> java.util.Properties;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">PropertiesExample<\/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\">Properties<\/span> <span class=\"hljs-variable\">properties<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Properties<\/span>();\r\n        <span class=\"hljs-keyword\">try<\/span> {\r\n            <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u914d\u7f6e\u9879<\/span>\r\n            properties.setProperty(<span class=\"hljs-string\">\"username\"<\/span>, <span class=\"hljs-string\">\"admin\"<\/span>);\r\n            properties.setProperty(<span class=\"hljs-string\">\"password\"<\/span>, <span class=\"hljs-string\">\"123456\"<\/span>);\r\n\r\n            <span class=\"hljs-comment\">\/\/ \u4fdd\u5b58\u914d\u7f6e\u6587\u4ef6<\/span>\r\n            <span class=\"hljs-type\">FileOutputStream<\/span> <span class=\"hljs-variable\">fileOutputStream<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">FileOutputStream<\/span>(<span class=\"hljs-string\">\"config.properties\"<\/span>);\r\n            properties.store(fileOutputStream, <span class=\"hljs-literal\">null<\/span>);\r\n            fileOutputStream.close();\r\n\r\n            System.out.println(<span class=\"hljs-string\">\"Config file saved successfully.\"<\/span>);\r\n\r\n        } <span class=\"hljs-keyword\">catch<\/span> (IOException e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u4f8b\u3067\u306f\u3001\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u540d\u524d\u304cconfig.properties\u3067\u3042\u308a\u3001\u5185\u5bb9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>username=admin\r\npassword=123456\r\n<\/code><\/pre>\n<p>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\u969b\u306b\u306f\u3001Properties\u30af\u30e9\u30b9\u306eload\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u8aad\u307f\u8fbc\u307f\u3001getProperty\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u8a2d\u5b9a\u9805\u76ee\u306e\u5024\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/p>\n<p>\u30d7\u30ed\u30d1\u30c6\u30a3\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u3080\u969b\u306b\u306f\u3001Properties\u30af\u30e9\u30b9\u306esetProperty\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u8a2d\u5b9a\u5024\u3092\u8a2d\u5b9a\u3057\u3001store\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002<\/p>\n<p>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u969b\u306b\u306f\u3001IOException\u4f8b\u5916\u3092\u51e6\u7406\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u30d1\u30b9\u306f\u5b9f\u969b\u306e\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u8abf\u6574\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u3067\u306f\u3001Properties\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u66f8\u304d\u306b\u306fjava.util.Properties\u30af\u30e9\u30b9\u304c\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u3001\u7c21\u5358\u306a\u4f8b\u3067\u3059\uff1a \u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\u3002 import java.io.FileInput [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,18],"class_list":["post-17583","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\u3067Properties\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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content=\"Java\u3067Properties\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f\" \/>\n<meta property=\"og:description\" content=\"Java\u3067Properties\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u3067properties\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-15T22:10:27+00:00\" 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