Here you can find the source of getRelativePath(File wd, File file)
static String getRelativePath(File wd, File file)
//package com.java2s; /*//from w w w. j a v a2 s . c o m * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 2009 Jonas Fonseca <fonseca@diku.dk> * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common * Development and Distribution License("CDDL") (collectively, the * "License"). You may not use this file except in compliance with the * License. You can obtain a copy of the License at * http://www.netbeans.org/cddl-gplv2.html. See the License for the * specific language governing permissions and limitations under the * License. When distributing the software, include this License Header * Notice in each file. * * This particular file is subject to the "Classpath" exception as provided * by Sun in the GPL Version 2 section of the License file that * accompanied this code. If applicable, add the following below the * License Header, with the fields enclosed by brackets [] replaced by * your own identifying information: * "Portions Copyrighted [year] [name of copyright owner]" * * Contributor(s): * * If you wish your version of this file to be governed by only the CDDL * or only the GPL Version 2, indicate your decision by adding * "[Contributor] elects to include this software in this distribution * under the [CDDL or GPL Version 2] license." If you do not indicate a * single choice of license, a recipient has the option to distribute * your version of this file under either the CDDL, the GPL Version 2 or * to extend the choice of license to its licensees as provided above. * However, if you add GPL Version 2 code and therefore, elected the GPL * Version 2 license, then the option applies only if the new code is * made subject to such option by the copyright holder. */ import java.io.File; public class Main { static String getRelativePath(File wd, File file) { int skip = file.getPath().length() > wd.getPath().length() ? 1 : 0; String relName = file.getPath().substring( wd.getPath().length() + skip); if (File.separatorChar != '/') { relName = relName.replace(File.separatorChar, '/'); } return relName; } }