Here you can find the source of delete(File file)
public static void delete(File file)
//package com.java2s; /*/*ww w . j a v a 2 s.c o m*/ * Copyright 2016 SyncObjects Ltda. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.io.File; public class Main { public static void delete(File file) { if (file == null) throw new IllegalArgumentException("file"); if (file.isDirectory()) { for (File f : file.listFiles()) { if (f.getName().equals(".") || f.getName().equals("..")) continue; delete(f); } } if (!file.delete()) throw new RuntimeException("failed to delete file: " + file); } }