Here you can find the source of getRootDirectoryOf(String referenceFile, String rootMark)
public static File getRootDirectoryOf(String referenceFile, String rootMark)
//package com.java2s; /*/* ww w. j a va2 s.co m*/ java packages for gastona Copyright (C) 2005-2015 Alejandro Xalabarder Aulet This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ import java.io.*; public class Main { public static File getRootDirectoryOf(String referenceFile, String rootMark) { File reference = new File(referenceFile); if (!reference.exists()) return null; String cannon = "."; try { cannon = reference.getCanonicalPath(); } catch (Exception e) { } return getRootDirectoryOf(new File(cannon), rootMark); } private static File getRootDirectoryOf(File referenceFile, String rootMark) { File tryfile = new File(referenceFile + "/" + rootMark); if (tryfile.exists()) return tryfile.getParentFile(); File parent = referenceFile.getParentFile(); if (parent == null) return null; return getRootDirectoryOf(parent, rootMark); } }