Here you can find the source of getRelativePath(File file, File basedir)
public static String getRelativePath(File file, File basedir)
//package com.java2s; /*/*from w w w . jav a 2 s .co 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 String getRelativePath(File file, File basedir) { if (basedir == null) throw new IllegalArgumentException("basedir"); if (file == null) throw new IllegalArgumentException("file"); String path = file.getAbsolutePath(); int p = path.indexOf(basedir.getAbsolutePath()); if (p == -1) return path; return path.substring(basedir.getAbsolutePath().length() + File.separator.length()); } }