java复制目录下文件

从网上下载了教程

结果为一个文件夹里很多压缩文件，解压拷贝太慢，所以写了以下程序：

import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;class Copy {private FileInputStream in;private FileOutputStream out;public void start(File fileR, String fileW,String format) {//format 要复制文件的格式if (!fileR.isFile()) {// 如果是目录File subFile[] = fileR.listFiles();// 得到所有子文件和目录for (int i = 0; i < subFile.length; i++) {if (!subFile[i].isFile()) {// 得到所有目录File temp[] = subFile[i].listFiles();// 得到所有子文件System.out.println(temp.length);for (int j = 0; j < temp.length; j++) {try {String name = temp[j].getName();if(name.endsWith(format)){this.in = new FileInputStream(temp[j]);name = fileW + name;System.out.println(name);this.out = new FileOutputStream(new File(name));byte b[] = new byte[(int) fileR.length()];int r = 0;while ((r = in.read(b)) != -1) {out.write(b);if (r == 0) {//防止是空文件，发生死循环break;}}in.close();out.flush();out.close();}} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}}}}public class CopyFile {public static void main(String args[]) {File fileR = new File("E:/Java Video/王勇");String fileW = "E:/Java Video/test/";Copy c = new Copy();c.start(fileR, fileW,".avi");}}