java源操作总结

java流操作总结
java流操作总结

1.控制台读取，控制台输出

/** * 该类只操作文本文件,支持在文本后追加 */public static void saveFile2File01(String fileFromDir, String fileToDir) throws Exception {BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(fileFromDir), System.getProperty("file.encoding")));BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(fileToDir, true), System.getProperty("file.encoding")));while (br.readLine() != null) {bw.write(br.readLine());                           bw.newLine();}bw.close();br.close();}

/** * 该类可操作任何文件 */public static void saveFile2File02(String fileFromDir, String fileToDir) throws Exception {FileInputStream fi = new FileInputStream(fileFromDir);FileOutputStream fo = new FileOutputStream(fileToDir);byte[] bytes = new byte[1024];int len = 0;while ((len = fi.read(bytes)) != -1) {fo.write(bytes, 0, len);}fi.close();fo.close();}