{"id":126921,"date":"2024-03-25T00:16:41","date_gmt":"2024-03-24T15:16:41","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%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%e3%82%b9%e3%83%86%e3%83%83%e3%83%97\/"},"modified":"2024-03-26T17:44:00","modified_gmt":"2024-03-26T08:44:00","slug":"java%e3%81%a7%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%e3%82%b9%e3%83%86%e3%83%83%e3%83%97","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%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%e3%82%b9%e3%83%86%e3%83%83%e3%83%97\/","title":{"rendered":"Java\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u30b9\u30c6\u30c3\u30d7"},"content":{"rendered":"

Java\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u624b\u9806\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n

    \n
  1. \u8aad\u307f\u66f8\u304d\u3092\u884c\u3046\u30d5\u30a1\u30a4\u30eb\u3092\u8868\u73fe\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3002File\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001File file = new File(“filename.txt”)<\/li>\n
  2. \u30d5\u30a1\u30a4\u30eb\u306e\u5b58\u5728\u78ba\u8a8d\u306f\u3001file.exists() \u30e1\u30bd\u30c3\u30c9\u306e\u5229\u7528\u304c\u53ef\u80fd\u3067\u3059\u3002<\/li>\n
  3. \u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u65b0\u898f\u4f5c\u6210\u3059\u308b\u3053\u3068\u3082\u9078\u629e\u3067\u304d\u307e\u3059\u3002file.createNewFile() \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002<\/li>\n
  4. \u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u8aad\u307f\u53d6\u308b\u305f\u3081\u306b\u306fFileInputStream\u3084BufferedReader\u3067\u30d5\u30a1\u30a4\u30eb\u5165\u529b\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u4f5c\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u66f8\u304d\u8fbc\u3080\u305f\u3081\u306b\u306fFileOutputStream\u3084BufferedWriter\u3067\u30d5\u30a1\u30a4\u30eb\u51fa\u529b\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u4f5c\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n
  5. \u30b9\u30c8\u30ea\u30fc\u30e0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5229\u7528\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u3002\u30d5\u30a1\u30a4\u30eb\u5185\u5bb9\u3092\u8aad\u307f\u8fbc\u3080\u969b\u306fread()\u30e1\u30bd\u30c3\u30c9\u304breadLine()\u30e1\u30bd\u30c3\u30c9\u3067\u30d5\u30a1\u30a4\u30eb\u5185\u306e\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u53d6\u308c\u308b\u3002\u30d5\u30a1\u30a4\u30eb\u5185\u5bb9\u3092\u66f8\u304d\u8fbc\u3080\u969b\u306fwrite()\u30e1\u30bd\u30c3\u30c9\u304bwriteLine()\u30e1\u30bd\u30c3\u30c9\u3067\u30d5\u30a1\u30a4\u30eb\u306b\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3081\u308b\u3002<\/li>\n
  6. \u30b9\u30c8\u30ea\u30fc\u30e0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u9589\u3058\u308b\u3002\u8aad\u307f\u66f8\u304d\u304c\u7d42\u4e86\u3057\u305f\u3089\u3001\u30b9\u30c8\u30ea\u30fc\u30e0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u9589\u3058\u3066\u30ea\u30bd\u30fc\u30b9\u3092\u89e3\u653e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002close()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30b9\u30c8\u30ea\u30fc\u30e0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u9589\u3058\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n

    \u4ee5\u4e0b\u306b\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3093\u3067\u5225\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u3080\u65b9\u6cd5\u3092\u793a\u3059\u7c21\u5358\u306a\u30b3\u30fc\u30c9\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n

    import<\/span> java.io.BufferedReader;\r\nimport<\/span> java.io.BufferedWriter;\r\nimport<\/span> java.io.File;\r\nimport<\/span> java.io.FileReader;\r\nimport<\/span> java.io.FileWriter;\r\nimport<\/span> java.io.IOException;\r\npublic<\/span> class<\/span> FileReadWriteExample<\/span> {\r\npublic<\/span> static<\/span> void<\/span> main<\/span>(String[] args)<\/span> {\r\ntry<\/span> {\r\n\/\/ \u521b\u5efa\u6587\u4ef6\u5bf9\u8c61<\/span>\r\nFile<\/span> inputFile<\/span> =<\/span> new<\/span> File<\/span>(\"input.txt\"<\/span>);\r\nFile<\/span> outputFile<\/span> =<\/span> new<\/span> File<\/span>(\"output.txt\"<\/span>);\r\n\/\/ \u521b\u5efa\u6587\u4ef6\u8f93\u5165\u6d41\u548c\u8f93\u51fa\u6d41<\/span>\r\nBufferedReader<\/span> reader<\/span> =<\/span> new<\/span> BufferedReader<\/span>(new<\/span> FileReader<\/span>(inputFile));\r\nBufferedWriter<\/span> writer<\/span> =<\/span> new<\/span> BufferedWriter<\/span>(new<\/span> FileWriter<\/span>(outputFile));\r\n\/\/ \u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u5e76\u5199\u5165\u5230\u53e6\u4e00\u4e2a\u6587\u4ef6\u4e2d<\/span>\r\nString line;\r\nwhile<\/span> ((line = reader.readLine()) != null<\/span>) {\r\nwriter.write(line);\r\nwriter.newLine();\r\n}\r\n\/\/ \u5173\u95ed\u6d41\u5bf9\u8c61<\/span>\r\nreader.close();\r\nwriter.close();\r\nSystem.out.println(\"\u6587\u4ef6\u8bfb\u5199\u5b8c\u6210\uff01\"<\/span>);\r\n} catch<\/span> (IOException e) {\r\ne.printStackTrace();\r\n}\r\n}\r\n}\r\n<\/code><\/pre>\n
    \u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u306f\u3001input.txt \u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u8aad\u307f\u53d6\u308a\u3001\u305d\u308c\u3092 output.txt \u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u307f\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    Java\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u624b\u9806\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 \u8aad\u307f\u66f8\u304d\u3092\u884c\u3046\u30d5\u30a1\u30a4\u30eb\u3092\u8868\u73fe\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3002File\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001File file = new […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-126921","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nJava\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u30b9\u30c6\u30c3\u30d7 - 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\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u30b9\u30c6\u30c3\u30d7\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u30b9\u30c6\u30c3\u30d7\" \/>\n<meta property=\"og:description\" content=\"Java\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u624b\u9806\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 \u8aad\u307f\u66f8\u304d\u3092\u884c\u3046\u30d5\u30a1\u30a4\u30eb\u3092\u8868\u73fe\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3002File\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001File file = new […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u30b9\u30c6\u30c3\u30d7\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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