{"id":6341,"date":"2011-03-25T08:00:25","date_gmt":"2011-03-24T23:00:25","guid":{"rendered":"http:\/\/www.sssg.org\/blogs\/hiro345\/?p=6341"},"modified":"2011-03-19T19:24:02","modified_gmt":"2011-03-19T10:24:02","slug":"java-file-read","status":"publish","type":"post","link":"https:\/\/www.hiro345.net\/blogs\/hiro345\/archives\/6341.html","title":{"rendered":"Java File read"},"content":{"rendered":"<p>Java\u306e\u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u8fbc\u307f\u306b\u3064\u3044\u3066\u3001\u3084\u306f\u308a finally \u3067\u304d\u3061\u3093\u3068\u30ea\u30bd\u30fc\u30b9\u89e3\u653e\u306f\u3057\u305f\u3044\u3068\u3053\u308d\u3002<br \/>\n<!--more--><\/p>\n<div class=\"code\" style=\"overflow: scroll; width: 490px; white-space: nowrap;background-color:black;color:white;padding:4px;\">import&nbsp;java.io.BufferedReader&#x3b;<br \/>\nimport&nbsp;java.io.File&#x3b;<br \/>\nimport&nbsp;java.io.FileNotFoundException&#x3b;<br \/>\nimport&nbsp;java.io.FileReader&#x3b;<br \/>\nimport&nbsp;java.io.IOException&#x3b;<\/p>\n<p>public&nbsp;class&nbsp;FileRead&nbsp;{<br \/>\n&nbsp;&nbsp;public&nbsp;void&nbsp;run(String&nbsp;fileName)&nbsp;throws&nbsp;Exception&nbsp;{<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;BufferedReader&nbsp;br&nbsp;=&nbsp;null&#x3b;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;try&nbsp;{<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;File&nbsp;file&nbsp;=&nbsp;new&nbsp;File(fileName)&#x3b;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;br&nbsp;=&nbsp;new&nbsp;BufferedReader(new&nbsp;FileReader(file))&#x3b;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;String&nbsp;s&nbsp;=&nbsp;&quot;&quot;&#x3b;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while&nbsp;((s&nbsp;=&nbsp;br.readLine())&nbsp;&#x21;=&nbsp;null)&nbsp;{<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;System.out.println(s)&#x3b;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;catch&nbsp;(FileNotFoundException&nbsp;e)&nbsp;{<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;e.printStackTrace()&#x3b;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;catch&nbsp;(IOException&nbsp;e)&nbsp;{<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;e.printStackTrace()&#x3b;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;finally&nbsp;{<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;(br&nbsp;&#x21;=&nbsp;null)&nbsp;{<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;br.close()&#x3b;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;}<br \/>\n&nbsp;&nbsp;}<br \/>\n&nbsp;&nbsp;public&nbsp;static&nbsp;void&nbsp;main(String[]&nbsp;args)&nbsp;{<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;FileRead&nbsp;app&nbsp;=&nbsp;new&nbsp;FileRead()&#x3b;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;try&nbsp;{<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;app.run(args[0])&#x3b;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;catch&nbsp;(Exception&nbsp;e)&nbsp;{<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;e.printStackTrace()&#x3b;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;}<br \/>\n&nbsp;&nbsp;}<br \/>\n}\n<\/p><\/div>\n<p>\u5b9f\u884c\u65b9\u6cd5\u306f java FileRead fileName.txt \u306e\u3088\u3046\u306b\u3001\u8aad\u307f\u8fbc\u307f\u305f\u3044\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u306e\u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u8fbc\u307f\u306b\u3064\u3044\u3066\u3001\u3084\u306f\u308a finally \u3067\u304d\u3061\u3093\u3068\u30ea\u30bd\u30fc\u30b9\u89e3\u653e\u306f\u3057\u305f\u3044\u3068\u3053\u308d\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-6341","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/posts\/6341","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/comments?post=6341"}],"version-history":[{"count":3,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/posts\/6341\/revisions"}],"predecessor-version":[{"id":6346,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/posts\/6341\/revisions\/6346"}],"wp:attachment":[{"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/media?parent=6341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/categories?post=6341"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/tags?post=6341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}