Java tutorial
//package com.java2s; /* * Copyright (c) Subhra Das Gupta * * This file is part of Xtream Download Manager. * * Xtream Download Manager 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. * * Xtream Download Manager 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 Xtream Download Manager; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ public class Main { public static String decode(String str) { char ch[] = str.toCharArray(); StringBuffer buf = new StringBuffer(); for (int i = 0; i < ch.length; i++) { if (ch[i] == '/' || ch[i] == '\\' || ch[i] == '"' || ch[i] == '?' || ch[i] == '*' || ch[i] == '<' || ch[i] == '>' || ch[i] == ':') continue; if (ch[i] == '%') { if (i + 2 < ch.length) { int c = Integer.parseInt(ch[i + 1] + "" + ch[i + 2], 16); buf.append((char) c); i += 2; continue; } } buf.append(ch[i]); } return buf.toString(); } }