Here you can find the source of ensureExists(File dir)
public static void ensureExists(File dir)
//package com.java2s; /******************************************************************************* * Copyright (c) 2011 IBM Corporation 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://w w w . j av a 2 s . c o m * IBM Corporation - initial API and implementation *******************************************************************************/ import java.io.File; public class Main { public static void ensureExists(File dir) { if (!dir.exists()) { dir.mkdirs(); } } }