Here you can find the source of deleteDirectory(File file)
public static boolean deleteDirectory(File file)
//package com.java2s; /* This software was developed by employees of the National Institute of * Standards and Technology (NIST), an agency of the Federal Government. * Pursuant to title 15 United States Code Section 105, works of NIST * employees are not subject to copyright protection in the United States * and are considered to be in the public domain. As a result, a formal * license is not needed to use the software. * //from w w w .ja va 2 s . com * This software is provided by NIST as a service and is expressly * provided "AS IS". NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED * OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT * AND DATA ACCURACY. NIST does not warrant or make any representations * regarding the use of the software or the results thereof including, but * not limited to, the correctness, accuracy, reliability or usefulness of * the software. * * Permission to use this software is contingent upon your acceptance * of the terms of this agreement. */ import java.io.File; public class Main { public static boolean deleteDirectory(File file) { if (file == null) { return false; } if (file.exists()) { for (final File f : file.listFiles()) { if (f.isDirectory()) { deleteDirectory(f); f.delete(); } else { f.delete(); } } return file.delete(); } return false; } }