Here you can find the source of getRelativeFilePath(File absolutePath, File reference)
public static File getRelativeFilePath(File absolutePath, File reference)
//package com.java2s; /******************************************************************************* Copyright 2015 Andreas Weber, Nikolas Herbst /*from w w w .j a v a2s . co m*/ 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 final File FILE_LOCATION = new File( new File(new File(System.getProperty("user.dir")).getParent(), "tools.descartes.bungee"), "files"); public static File getRelativeFilePath(File absolutePath, File reference) { File relativePath = absolutePath; if (absolutePath.getAbsolutePath().contains(reference.getAbsolutePath())) { relativePath = new File( absolutePath.getAbsolutePath().substring(reference.getAbsolutePath().length() + 1)); } return relativePath; } public static File getAbsolutePath(File file) { if (file.exists()) { // path is already absolute return file; } else { // create absolute path return new File(FILE_LOCATION, file.toString()); } } }