{"id":7450,"date":"2024-03-14T21:44:33","date_gmt":"2024-03-14T12:44:33","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/android%e3%81%a7randomaccessfile%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/"},"modified":"2025-08-03T14:40:26","modified_gmt":"2025-08-03T05:40:26","slug":"android%e3%81%a7randomaccessfile%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/android%e3%81%a7randomaccessfile%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/","title":{"rendered":"Android RandomAccessFile\u306e\u4f7f\u3044\u65b9\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u4ed8\u304d\u3011"},"content":{"rendered":"<p>Android\u306b\u304a\u3044\u3066\u3001RandomAccessFile\u30af\u30e9\u30b9\u306f\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001\u30d5\u30a1\u30a4\u30eb\u5185\u306e\u4efb\u610f\u306e\u4f4d\u7f6e\u306b\u79fb\u52d5\u3057\u3066\u8aad\u307f\u66f8\u304d\u64cd\u4f5c\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306fRandomAccessFile\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u3088\u304f\u4f7f\u308f\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u306e\u3044\u304f\u3064\u304b\u3067\u3059\u3002<\/p>\n<ol>\n<li>RandomAccessFile\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">RandomAccessFile<\/span> <span class=\"hljs-variable\">randomAccessFile<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">RandomAccessFile<\/span>(<span class=\"hljs-string\">\"file.txt\"<\/span>, <span class=\"hljs-string\">\"rw\"<\/span>);\r\n<\/code><\/pre>\n<p>\u6700\u521d\u306e\u5f15\u6570\u306f\u30d5\u30a1\u30a4\u30eb\u306e\u30d1\u30b9\u3067\u3042\u308a\u3001\u4e8c\u756a\u76ee\u306e\u5f15\u6570\u306f\u30e2\u30fc\u30c9\u3067\u3042\u308a\u3001&#8221;rw&#8221;\u306f\u8aad\u307f\u66f8\u304d\u53ef\u80fd\u30e2\u30fc\u30c9\u3092\u8868\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u30d5\u30a1\u30a4\u30eb\u3078\u306e\u30c7\u30fc\u30bf\u66f8\u304d\u8fbc\u307f\uff1a<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code>randomAccessFile.write(<span class=\"hljs-string\">\"Hello, World!\"<\/span>.getBytes());\r\n<\/code><\/pre>\n<ol>\n<li>\u30d5\u30a1\u30a4\u30eb\u306e\u7279\u5b9a\u306e\u4f4d\u7f6e\u3092\u7279\u5b9a\u3059\u308b\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code>randomAccessFile.seek(<span class=\"hljs-number\">5<\/span>); <span class=\"hljs-comment\">\/\/ \u5b9a\u4f4d\u5230\u6587\u4ef6\u7684\u7b2c5\u4e2a\u5b57\u8282\u4f4d\u7f6e<\/span>\r\n<\/code><\/pre>\n<ol>\n<li>\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u8aad\u307f\u8fbc\u3080:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">byte<\/span>[] buffer = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">byte<\/span>[<span class=\"hljs-number\">10<\/span>];\r\nrandomAccessFile.read(buffer);\r\n<span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">content<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">String<\/span>(buffer);\r\n<\/code><\/pre>\n<ol>\n<li>RandomAccessFile\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u9589\u3058\u308b\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code>randomAccessFile.close();\r\n<\/code><\/pre>\n<p>RandomAccessFile \u3092\u4f7f\u7528\u3057\u305f\u5f8c\u306f\u3001close() \u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u3092\u9589\u3058\u308b\u3053\u3068\u3092\u304a\u5fd8\u308c\u306a\u304f\u3002RandomAccessFile \u3092\u4f7f\u7528\u3059\u308b\u969b\u306f\u3001\u5e38\u306b\u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u3084\u30a2\u30af\u30bb\u30b9\u6a29\u304c\u306a\u3044\u5834\u5408\u306a\u3069\u306e\u4f8b\u5916\u51e6\u7406\u306b\u6ce8\u610f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Android\u306b\u304a\u3044\u3066\u3001RandomAccessFile\u30af\u30e9\u30b9\u306f\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001\u30d5\u30a1\u30a4\u30eb\u5185\u306e\u4efb\u610f\u306e\u4f4d\u7f6e\u306b\u79fb\u52d5\u3057\u3066\u8aad\u307f\u66f8\u304d\u64cd\u4f5c\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306fRandomAccessFile\u3092\u4f7f\u7528\u3059 [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[108,42,2665,382,26],"class_list":["post-7450","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-android","tag-java","tag-randomaccessfile","tag-382","tag-26"],"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>Android RandomAccessFile\u306e\u4f7f\u3044\u65b9\u3010\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u4ed8\u304d\u3011 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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