{"id":93414,"date":"2024-03-21T16:34:09","date_gmt":"2024-03-21T07:34:09","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ae%e3%82%aa%e3%83%95%e3%82%bb%e3%83%83%e3%83%88%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%af%ef%bc%9f\/"},"modified":"2024-04-05T04:21:57","modified_gmt":"2024-04-04T19:21:57","slug":"java%e3%81%ae%e3%82%aa%e3%83%95%e3%82%bb%e3%83%83%e3%83%88%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%af%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ae%e3%82%aa%e3%83%95%e3%82%bb%e3%83%83%e3%83%88%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%af%ef%bc%9f\/","title":{"rendered":"java\u306e\u30aa\u30d5\u30bb\u30c3\u30c8\u306e\u4f7f\u3044\u65b9\u306f\uff1f"},"content":{"rendered":"

Java\u3067\u306f\u30aa\u30d5\u30bb\u30c3\u30c8(offset)\u306f\u3001\u57fa\u6e96\u70b9\u304b\u3089\u306e\u76f8\u5bfe\u7684\u306a\u4f4d\u7f6e\u3092\u8868\u3059\u306e\u306b\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u6587\u5b57\u5217\u306e\u5207\u308a\u53d6\u308a\u3001\u914d\u5217\u306e\u30a2\u30af\u30bb\u30b9\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u5834\u9762\u3067\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u30aa\u30d5\u30bb\u30c3\u30c8\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u4e00\u822c\u7684\u306a\u4f8b\u3068\u30b7\u30ca\u30ea\u30aa\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n

    \n
  1. substring(\u958b\u59cb\u4f4d\u7f6e)<\/li>\n<\/ol>\n
    String<\/span> str<\/span> =<\/span> \"Hello, World!\"<\/span>;\r\nint<\/span> offset<\/span> =<\/span> 7<\/span>;\r\nString<\/span> subStr<\/span> =<\/span> str.substring(offset); \/\/ subStr = \"World!\"<\/span>\r\n<\/code><\/pre>\n
      \n
    1. \u914d\u5217\u30a2\u30af\u30bb\u30b9\uff1a\u914d\u5217\u5185\u306e\u8981\u7d20\u306b\u30aa\u30d5\u30bb\u30c3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n
      int<\/span>[] arr = {1<\/span>, 2<\/span>, 3<\/span>, 4<\/span>, 5<\/span>};\r\nint<\/span> offset<\/span> =<\/span> 2<\/span>;\r\nint<\/span> element<\/span> =<\/span> arr[offset]; \/\/ element = 3<\/span>\r\n<\/code><\/pre>\n
        \n
      1. seek(\u9577\u3044\u30aa\u30d5\u30bb\u30c3\u30c8)<\/li>\n<\/ol>\n
        RandomAccessFile<\/span> file<\/span> =<\/span> new<\/span> RandomAccessFile<\/span>(\"filename.txt\"<\/span>, \"r\"<\/span>);\r\nint<\/span> offset<\/span> =<\/span> 10<\/span>;\r\nfile.seek(offset);\r\nbyte<\/span>[] bytes = new<\/span> byte<\/span>[10<\/span>];\r\nint<\/span> bytesRead<\/span> =<\/span> file.read(bytes); \/\/ \u4ece\u504f\u79fb\u91cf10\u5f00\u59cb\u8bfb\u53d610\u4e2a\u5b57\u8282\u5230bytes\u6570\u7ec4\u4e2d<\/span>\r\n<\/code><\/pre>\n
        \u306a\u304a\u30aa\u30d5\u30bb\u30c3\u30c8\u306f\u901a\u5e380\u304b\u3089\u6570\u3048\u308b\u3053\u3068\u306b\u7559\u610f\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u3053\u308c\u306f\u6700\u521d\u4f4d\u7f6e\u307e\u305f\u306f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8868\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u30aa\u30d5\u30bb\u30c3\u30c8\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u671f\u5f85\u3059\u308b\u4f4d\u7f6e\u3092\u5f97\u308b\u306b\u306f\u72b6\u6cc1\u306b\u5fdc\u3058\u30661\u8db3\u3057\u305f\u308a\u5f15\u3044\u305f\u308a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
        Java\u3067\u306f\u30aa\u30d5\u30bb\u30c3\u30c8(offset)\u306f\u3001\u57fa\u6e96\u70b9\u304b\u3089\u306e\u76f8\u5bfe\u7684\u306a\u4f4d\u7f6e\u3092\u8868\u3059\u306e\u306b\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u6587\u5b57\u5217\u306e\u5207\u308a\u53d6\u308a\u3001\u914d\u5217\u306e\u30a2\u30af\u30bb\u30b9\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u5834\u9762\u3067\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 \u30aa\u30d5\u30bb\u30c3\u30c8\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u4e00\u822c\u7684\u306a\u4f8b\u3068\u30b7\u30ca\u30ea\u30aa\u3092\u3044\u304f\u3064 […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-93414","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\njava\u306e\u30aa\u30d5\u30bb\u30c3\u30c8\u306e\u4f7f\u3044\u65b9\u306f\uff1f - 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