Here you can find the source of delete(File file)
public static void delete(File file)
//package com.java2s; /*/*from w ww . jav a 2s. c om*/ * Copyright (c) 2015 Eike Stepper (Berlin, Germany) and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Eike Stepper - initial API and implementation */ import java.io.File; public class Main { public static void delete(File file) { if (file != null) { if (file.isDirectory()) { deleteFiles(file); } file.delete(); } } public static void deleteFiles(File folder) { if (folder != null) { File[] files = folder.listFiles(); if (files != null) { for (File file : files) { delete(file); } } } } }