Here you can find the source of normalizePath(String path)
public static String normalizePath(String path)
//package com.java2s; /* This program 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 2 * of the License, or (at your option) any later version. * * This program 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. * // www.j av a2s. c o m * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * monoped@users.sourceforge.net */ public class Main { public static String normalizePath(String path) { String[] comps = path.split("/"); String[] ap = new String[comps.length]; int j = 0; boolean absolute = comps[0].length() == 0; for (int i = 0; i < comps.length; ++i) { String s = comps[i]; if (s.equals(".") || s.length() == 0) continue; if (s.equals("..")) { if (j > 0) --j; } else ap[j++] = s; } if (j == 0) return absolute ? "/" : "."; if (absolute) path = "/" + ap[0]; else path = ap[0]; for (int i = 1; i < j; ++i) path += "/" + ap[i]; return path; } }