{"id":22409,"date":"2024-03-16T19:30:41","date_gmt":"2024-03-16T10:30:41","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%81%ae%e5%86%85%e5%ae%b9%e3%82%92%e8%a1%8c%e3%81%94%e3%81%a8%e3%81%ab%e8%aa%ad%e3%81%bf%e8%be%bc%e3%82%80%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95-2\/"},"modified":"2025-08-07T11:00:10","modified_gmt":"2025-08-07T02:00:10","slug":"java%e3%81%a7%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%81%ae%e5%86%85%e5%ae%b9%e3%82%92%e8%a1%8c%e3%81%94%e3%81%a8%e3%81%ab%e8%aa%ad%e3%81%bf%e8%be%bc%e3%82%80%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95-2","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%81%ae%e5%86%85%e5%ae%b9%e3%82%92%e8%a1%8c%e3%81%94%e3%81%a8%e3%81%ab%e8%aa%ad%e3%81%bf%e8%be%bc%e3%82%80%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95-2\/","title":{"rendered":"java\u3067\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u884c\u3054\u3068\u306b\u8aad\u307f\u8fbc\u3080\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"

Java\u306b\u306f\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u884c\u3054\u3068\u306b\u8aad\u307f\u53d6\u308b\u305f\u3081\u306e\u8907\u6570\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u4e00\u822c\u7684\u306a\u65b9\u6cd5\u306e\u3044\u304f\u3064\u304b\u3067\u3059\uff1a<\/p>\n

    \n
  1. BufferedReader\u30af\u30e9\u30b9\u306ereadLine()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n
  2. try\u6587\u5185\u3067\u3001BufferedReader\u3092fileName\u304b\u3089\u8aad\u307f\u8fbc\u3080\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u3001\u5404\u884c\u306e\u5185\u5bb9\u3092\u51e6\u7406\u3057\u307e\u3059\u3002\u3082\u3057IOException\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306f\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/li>\n
  3. Scanner\u30af\u30e9\u30b9\u306enextLine()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\uff1a<\/li>\n
  4. try(Scanner scanner = new Scanner(new File(fileName))) {
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    \n\/\/ \u5404\u884c\u306e\u5185\u5bb9\u3092\u51e6\u7406\u3059\u308b
    \n}
    \n} catch (FileNotFoundException e) {
    \ne.printStackTrace();
    \n}<\/li>\n
  5. Files\u30af\u30e9\u30b9\u306elines()\u30e1\u30bd\u30c3\u30c9\u3068\u30b9\u30c8\u30ea\u30fc\u30e0\u64cd\u4f5c\u306e\u4f7f\u7528\uff1a<\/li>\n
  6. try (Stream lines = Files.lines(Paths.get(fileName))) {
    \nlines.forEach(line -> {
    \n\/\/ \uff11\u884c\u305a\u3064\u51e6\u7406
    \n});
    \n} catch (IOException e) {
    \ne.printStackTrace();
    \n}<\/li>\n<\/ol>\n

    \u3053\u308c\u3089\u306e\u65b9\u6cd5\u306f\u3059\u3079\u3066\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u884c\u3054\u3068\u306b\u8aad\u307f\u53d6\u308a\u3001\u5404\u884c\u306b\u5bfe\u5fdc\u3059\u308b\u64cd\u4f5c\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3069\u306e\u65b9\u6cd5\u3092\u9078\u629e\u3059\u308b\u304b\u306f\u3001\u3042\u306a\u305f\u306e\u30cb\u30fc\u30ba\u3084\u500b\u4eba\u306e\u597d\u307f\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

    Java\u306b\u306f\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u884c\u3054\u3068\u306b\u8aad\u307f\u53d6\u308b\u305f\u3081\u306e\u8907\u6570\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u4e00\u822c\u7684\u306a\u65b9\u6cd5\u306e\u3044\u304f\u3064\u304b\u3067\u3059\uff1a BufferedReader\u30af\u30e9\u30b9\u306ereadLine()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002 try\u6587\u5185\u3067\u3001Buffer […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-22409","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\njava\u3067\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u884c\u3054\u3068\u306b\u8aad\u307f\u8fbc\u3080\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"java\u3067\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u884c\u3054\u3068\u306b\u8aad\u307f\u8fbc\u3080\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 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\u306e\u5185\u5bb9\u3092\u884c\u3054\u3068\u306b\u8aad\u307f\u8fbc\u3080\u65b9\u6cd5\u306f\u4f55-2\/\" \/>\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\u306e\u5185\u5bb9\u3092\u884c\u3054\u3068\u306b\u8aad\u307f\u8fbc\u3080\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f\" \/>\n<meta property=\"og:description\" content=\"java\u3067\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u884c\u3054\u3068\u306b\u8aad\u307f\u8fbc\u3080\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\u3067\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u884c\u3054\u3068\u306b\u8aad\u307f\u8fbc\u3080\u65b9\u6cd5\u306f\u4f55-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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