删除文件的Java小程序

package com.feng;


import java.io.File;


public class DeleteFiles {


	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception{
		long a = System.currentTimeMillis();
		File file = new File("D:\\外快数据");
		deleteFile(file ,a);
		long b = System.currentTimeMillis();
		long timeSecond = (b - a)/1000;
		System.out.println("耗时：" + timeSecond/3600 + "小时" + timeSecond%3600/60 + "分钟" + timeSecond%3600%60 + "秒");
		System.out.println();
	}
	
	private static void deleteFile(File file, long time) throws Exception{
		if(!file.exists()){
			return;
		}
		if(file.isDirectory()){
			System.out.println("Delete File : " + file);
			for(File subFile : file.listFiles()){
				deleteFile(subFile, time);
			}
			file.getAbsoluteFile().delete();
		}else{
			file.getAbsoluteFile().delete();


		}
	}
}