{"id":874,"date":"2023-07-19T11:51:49","date_gmt":"2023-10-06T06:36:25","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/index.php\/2023\/11\/30\/%e4%bb%96%e3%81%aejava%e3%83%97%e3%83%ad%e3%82%b0%e3%83%a9%e3%83%a0%e3%81%8b%e3%82%89java%e3%83%97%e3%83%ad%e3%82%b0%e3%83%a9%e3%83%a0%e3%82%92%e3%82%b3%e3%83%b3%e3%83%91%e3%82%a4%e3%83%ab%e3%81%97\/"},"modified":"2025-08-01T03:11:19","modified_gmt":"2025-07-31T18:11:19","slug":"%e4%bb%96%e3%81%aejava%e3%83%97%e3%83%ad%e3%82%b0%e3%83%a9%e3%83%a0%e3%81%8b%e3%82%89java%e3%83%97%e3%83%ad%e3%82%b0%e3%83%a9%e3%83%a0%e3%82%92%e3%82%b3%e3%83%b3%e3%83%91%e3%82%a4%e3%83%ab%e3%81%97","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/%e4%bb%96%e3%81%aejava%e3%83%97%e3%83%ad%e3%82%b0%e3%83%a9%e3%83%a0%e3%81%8b%e3%82%89java%e3%83%97%e3%83%ad%e3%82%b0%e3%83%a9%e3%83%a0%e3%82%92%e3%82%b3%e3%83%b3%e3%83%91%e3%82%a4%e3%83%ab%e3%81%97\/","title":{"rendered":"\u4ed6\u306eJava\u30d7\u30ed\u30b0\u30e9\u30e0\u304b\u3089Java\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3066\u5b9f\u884c\u306e\u65b9\u6cd5"},"content":{"rendered":"<p>\u5225\u306eJava\u30d7\u30ed\u30b0\u30e9\u30e0\u304b\u3089Java\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3066\u5b9f\u884c\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u304b\u8003\u3048\u305f\u3053\u3068\u306f\u3042\u308a\u307e\u3059\u304b\uff1fRuntime.exec\uff08String cmd\uff09\u3092\u4f7f\u7528\u3057\u3066\u3001\u57fa\u790e\u3068\u306a\u308b\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306b\u30b3\u30de\u30f3\u30c9\u3092\u767a\u884c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u540c\u3058\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u4f7f\u7528\u3057\u3066\u3001\u5225\u306eJava\u30d7\u30ed\u30b0\u30e9\u30e0\u304b\u3089Java\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3066\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<h2>\u5225\u306eJava\u30d7\u30ed\u30b0\u30e9\u30e0\u304b\u3089Java\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3066\u5b9f\u884c\u3059\u308b\u3002<\/h2>\n<p>\u5225\u306eJava\u30d7\u30ed\u30b0\u30e9\u30e0\u304b\u3089\u30b3\u30f3\u30d1\u30a4\u30eb\u304a\u3088\u3073\u5b9f\u884c\u3055\u308c\u308b\u7c21\u5358\u306aJava\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.scdev.files;\r\n\r\npublic class Test {\r\n\r\n    public static void main(String[] args) {\r\n        System.out.println(\"Start\");\r\n        for(String str : args){\r\n            System.out.println(str);\r\n        }\r\n\r\n    }\r\n\r\n}\r\n<\/code><\/pre>\n<p>\u3053\u3061\u3089\u306f\u3001Test\u30af\u30e9\u30b9\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3066\u5b9f\u884c\u3057\u3066\u3044\u308b\u5225\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.scdev.files;\r\n\r\nimport java.io.BufferedReader;\r\nimport java.io.InputStream;\r\nimport java.io.InputStreamReader;\r\n\r\npublic class CompileRunJavaProgram {\r\n\r\n    public static void main(String[] args) {\r\n        try {\r\n            runProcess(\"pwd\");\r\n            System.out.println(\"**********\");\r\n            runProcess(\"javac -cp src src\/com\/scdev\/files\/Test.java\");\r\n            System.out.println(\"**********\");\r\n            runProcess(\"java -cp src com\/scdev\/files\/Test Hi Pankaj\");\r\n        } catch (Exception e) {\r\n            e.printStackTrace();\r\n        }\r\n        \r\n    }\r\n\r\n    private static void printLines(String cmd, InputStream ins) throws Exception {\r\n        String line = null;\r\n        BufferedReader in = new BufferedReader(\r\n            new InputStreamReader(ins));\r\n        while ((line = in.readLine()) != null) {\r\n            System.out.println(cmd + \" \" + line);\r\n        }\r\n      }\r\n\r\n      private static void runProcess(String command) throws Exception {\r\n        Process pro = Runtime.getRuntime().exec(command);\r\n        printLines(command + \" stdout:\", pro.getInputStream());\r\n        printLines(command + \" stderr:\", pro.getErrorStream());\r\n        pro.waitFor();\r\n        System.out.println(command + \" exitValue() \" + pro.exitValue());\r\n      }\r\n\r\n}\r\n<\/code><\/pre>\n<p>javac\u30b3\u30de\u30f3\u30c9\u3068java\u30b3\u30de\u30f3\u30c9\u306e\u9055\u3044\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306f\u3001Eclipse\u306e\u4f5c\u696d\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u304c\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30eb\u30fc\u30c8\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3067\u3042\u308b\u4e00\u65b9\u3001\u30af\u30e9\u30b9\u306e\u30bd\u30fc\u30b9\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306fsrc\u3067\u3059\u304b\u3089\u3001\u3053\u306e\u3088\u3046\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002Eclipse\u304b\u3089\u4e0a\u8a18\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u51fa\u529b\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>pwd stdout: \/Users\/scdev\/Documents\/eclipse-workspace\/JavaExceptions\r\npwd exitValue() 0\r\n**********\r\nPath Serapartor = \/\r\njavac -cp src src\/com\/scdev\/files\/Test.java exitValue() 0\r\n**********\r\njava -cp src com\/scdev\/files\/Test Hi Pankaj stdout: Start\r\njava -cp src com\/scdev\/files\/Test Hi Pankaj stdout: Hi\r\njava -cp src com\/scdev\/files\/Test Hi Pankaj stdout: Pankaj\r\njava -cp src com\/scdev\/files\/Test Hi Pankaj exitValue() 0\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648eb5daa94e2bdf7bd40f\/8-0.jpg\" alt=\"compile and run java program from another java program in eclipse\" \/><\/div>\n<pre class=\"post-pre\"><code>scdev:~ scdev$ cd \/Users\/scdev\/Documents\/eclipse-workspace\/JavaExceptions\r\nscdev:JavaExceptions scdev$ javac -cp src src\/com\/scdev\/files\/Test.java\r\nscdev:JavaExceptions scdev$ javac -cp src src\/com\/scdev\/files\/CompileRunJavaProgram.java \r\nscdev:JavaExceptions scdev$ java -cp src com\/scdev\/files\/CompileRunJavaProgram\r\npwd stdout: \/Users\/scdev\/Documents\/eclipse-workspace\/JavaExceptions\r\npwd exitValue() 0\r\n**********\r\njavac -cp src src\/com\/scdev\/files\/Test.java exitValue() 0\r\n**********\r\njava -cp src com\/scdev\/files\/Test Hi Pankaj stdout: Start\r\njava -cp src com\/scdev\/files\/Test Hi Pankaj stdout: Hi\r\njava -cp src com\/scdev\/files\/Test Hi Pankaj stdout: Pankaj\r\njava -cp src com\/scdev\/files\/Test Hi Pankaj exitValue() 0\r\nscdev:JavaExceptions scdev$ \r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648eb5daa94e2bdf7bd40f\/10-0.jpg\" alt=\"java program to compile and run java program cmd\" \/><\/div>\n<pre class=\"post-pre\"><code>public static void main(String[] args) {\r\n    try {\r\n        if(args.length &lt; 2) throw new Exception(\"Mandatory Arguments missing\");\r\n        runProcess(args[0]);\r\n        runProcess(args[1]);\r\n    } catch (Exception e) {\r\n        e.printStackTrace();\r\n    }\r\n    \r\n}\r\n<\/code><\/pre>\n<p>\u79c1\u305f\u3061\u306f\u3001\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306b\u4f9d\u5b58\u3057\u306a\u3044\u3088\u3046\u306b\u30b3\u30de\u30f3\u30c9\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b\u3001File.separator\u3082\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001System.getProperty\u30e1\u30bd\u30c3\u30c9\u306eSystem.getProperty(&#8220;file.separator&#8221;)\u304b\u3089\u3053\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3082\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4e0a\u8a18\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5909\u66f4\u3057\u3066\u30b7\u30b9\u30c6\u30e0\u306b\u4f9d\u5b58\u3057\u306a\u3044\u30b3\u30fc\u30c9\u306b\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>String separator = File.separator;\r\nSystem.out.println(\"File Serapartor = \"+separator);\r\n\r\nseparator = System.getProperty(\"file.separator\");\r\nSystem.out.println(\"File Serapartor = \"+separator);\r\n\r\nrunProcess(\"javac -cp src src\"+separator+\"com\"+separator+\"scdev\"+separator+\"files\"+separator+\"Test.java\");\r\nSystem.out.println(\"**********\");\r\nrunProcess(\"java -cp src com\"+separator+\"scdev\"+separator+\"files\"+separator+\"Test Hi Pankaj\");\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u3068\u540c\u3058\u51fa\u529b\u304c\u5f97\u3089\u308c\u307e\u3059\u3002\u3053\u308c\u3067\u3001\u5225\u306eJava\u30d7\u30ed\u30b0\u30e9\u30e0\u304b\u3089Java\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u304a\u3088\u3073\u5b9f\u884c\u3059\u308b\u305f\u3081\u306bRuntime exec\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u306e\u3059\u3079\u3066\u3067\u3059\u3002printLines()\u30e1\u30bd\u30c3\u30c9\u3068runProcess()\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u3053\u306e\u6295\u7a3f\u304b\u3089\u53d6\u5f97\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5225\u306eJava\u30d7\u30ed\u30b0\u30e9\u30e0\u304b\u3089Java\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3066\u5b9f\u884c\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u304b\u8003\u3048\u305f\u3053\u3068\u306f\u3042\u308a\u307e\u3059\u304b\uff1fRuntime.exec\uff08String cmd\uff09\u3092\u4f7f\u7528\u3057\u3066\u3001\u57fa\u790e\u3068\u306a\u308b\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306b\u30b3\u30de\u30f3\u30c9\u3092\u767a\u884c\u3059\u308b\u3053 [&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-874","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>\u4ed6\u306eJava\u30d7\u30ed\u30b0\u30e9\u30e0\u304b\u3089Java\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3066\u5b9f\u884c\u306e\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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