Here you can find the source of makeDirs(File f)
public static boolean makeDirs(File f)
//package com.java2s; /**/* w ww . ja va 2 s. c o m*/ * Licensed to Cloudera, Inc. under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. Cloudera, Inc. licenses this file * to you 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 { /** * Make a directory and its parents, returning true if and only if the dir * exists. Does not guarantee that we can write to that directory! */ public static boolean makeDirs(File f) { if (f.exists()) { if (!f.isDirectory()) { return false; } return true; } return f.mkdirs(); } }