Java tutorial
//package com.java2s; import java.io.File; public class Main { public static boolean checkFilesIsNeedDelete(String path, long intervalTime) { File file = new File(path); if (file == null && !file.exists()) { return false; } if (file.isFile()) { deleteFileByIntervalTime(file, intervalTime); } else { File[] fileList = file.listFiles(); for (int i = 0; i < fileList.length; i++) { File temp = fileList[i]; if (temp.isDirectory()) { checkFilesIsNeedDelete(temp.getAbsolutePath(), intervalTime); } else { deleteFileByIntervalTime(temp, intervalTime); } } } return true; } public static boolean deleteFileByIntervalTime(File file, long intervalTime) { long time = System.currentTimeMillis(); if (time - file.lastModified() > intervalTime) { file.delete(); } return true; } }