java代码拷贝文件

package p333;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;

public class PrintFileName {

	private static int copy_ok_count, copy_fail_count;
	private static String srcPathPrefix = "E:/rename", desPathPrefix = "E:/renameok/";
	private static String currentName;
	private static int printdotcnt;

	/**
	 * 复制整个文件夹内容
	 * 
	 * @param newPath
	 *            String 复制后路径 如：f:/fqf/ff
	 * @param oldPath
	 *            String 原文件路径 如：c:/fqf
	 * @return boolean
	 */
	public static void copyFolder(String newPath, String oldPath) {

		try {
			(new File(newPath)).mkdirs(); // 如果文件夹不存在 则建立新文件夹
			File a = new File(oldPath);
			String[] file = a.list();
			File temp = null;
			for (int i = 0; i < file.length; i++) {
				if (oldPath.endsWith(File.separator)) {
					temp = new File(oldPath + file[i]);
				} else {
					temp = new File(oldPath + File.separator + file[i]);
				}

				if (temp.isFile()) {
					
					//过滤一些文件
					if ( temp.toString().endsWith(".rar") == true || temp.toString().endsWith(".tmp") == true) {
						continue;
					}
					DataInputStream dis = new DataInputStream(new BufferedInputStream(new FileInputStream(temp)));
					DataOutputStream dos = new DataOutputStream(new BufferedOutputStream(
							new FileOutputStream(newPath + "/" + (temp.getName()).toString())));

					byte b[] = new byte[4096];
					int length;
					while ((length = dis.read(b)) != -1) {
						dos.write(b, 0, length);
					}
					dos.flush();
					dos.close();
					dis.close();
					System.out.print(".");
					printdotcnt++;
					if (printdotcnt >= 80) {
						printdotcnt = 0;
						System.out.println();
					}

				} else if (temp.isDirectory()) {// 如果是子文件夹
					copyFolder(newPath + "/" + file[i], oldPath + "/" + file[i]);
				}
			}
		} catch (Exception e) {
			System.out.println("复制整个文件夹内容操作出错");
			e.printStackTrace();
		}
	}
	public static void main(String[] args) {
		String startTime;
		SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 设置日期格式
		File file = new File(srcPathPrefix);
		copy_ok_count = 0;
		copy_fail_count = 0;
		printdotcnt = 0;
		startTime = "\n开始时间:" + df.format(new Date());
		// Date()为获取当前系统时间
		copyFolder(desPathPrefix, srcPathPrefix);
		System.out.println(startTime);
		System.out.println("结束时间:" + df.format(new Date()));
		System.out.println("\nall file copy over!");
	}
}