Here you can find the source of delTree(File file)
public static boolean delTree(File file)
//package com.java2s; /*// w ww .j a va 2 s .com * Adito * * Copyright (C) 2003-2006 3SP LTD. All Rights Reserved * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ import java.io.File; public class Main { public static boolean delTree(File file) { if (file.isFile()) { return file.delete(); } else { String[] list = file.list(); for (int i = 0; i < list.length; i++) { if (!delTree(new File(file, list[i]))) { return false; } } } return true; } }