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();}}}