Here you can find the source of mkdir(String dirname)
public static boolean mkdir(String dirname)
//package com.java2s; /**//from www. j a v a 2 s . co m * * Copyright ISISLab, 2015 Universit? degli Studi di Salerno. * 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. * @author Michele Carillo michelecarillo@gmail.com * @author Flavio Serrapica flavioserrapica@gmail.com * @author Carmine Spagnuolo spagnuolocarmine@gmail.com * */ import java.io.File; public class Main { public static boolean mkdir(String dirname) { File f = new File(dirname); if (f.exists()) return true; else return f.mkdirs(); } }