Here you can find the source of cleanDirectory(File dir)
public static void cleanDirectory(File dir)
//package com.java2s; /**//from ww w .j a v a2 s .co m * This file is part of VisiCut. * Copyright (C) 2011 - 2013 Thomas Oster <thomas.oster@rwth-aachen.de> * RWTH Aachen University - 52062 Aachen, Germany * * VisiCut is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * VisiCut 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with VisiCut. If not, see <http://www.gnu.org/licenses/>. **/ import java.io.File; public class Main { public static void cleanDirectory(File dir) { if (dir.exists() && dir.isDirectory()) { for (File f : dir.listFiles()) { deleteRecursively(f); } } } public static void deleteRecursively(File f) { if (f.exists()) { if (f.isDirectory()) { for (File ff : f.listFiles()) { deleteRecursively(ff); } } f.delete(); } } }