Here you can find the source of isRelativePath(final String filePath)
public static boolean isRelativePath(final String filePath)
//package com.java2s; /**/* w w w. ja v a 2 s . c o m*/ * * Copyright (C) 2015 - Daniel Hams, Modular Audio Limited * daniel.hams@gmail.com * * Mad is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Mad is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Mad. If not, see <http://www.gnu.org/licenses/>. * */ import java.io.File; public class Main { public static boolean isRelativePath(final String filePath) { final int filePathLength = filePath.length(); return !((filePathLength >= 1 && File.separatorChar == '/' && filePath.charAt(0) == '/') || (filePathLength >= 2 && File.separatorChar == '\\' && filePath.charAt(1) == ':')); } }