Java tutorial
//package com.java2s; /* * File : TRTrackerClientUtils.java * Created : 29-Feb-2004 * By : parg * * Azureus - a Java Bittorrent client * * 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. * * 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 ( see the LICENSE file ). * * 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 */ import java.net.*; import java.io.*; public class Main { private static String[] BLACKLISTED_HOSTS = { "krypt.dyndns.org" }; private static int[] BLACKLISTED_PORTS = { 81 }; public static void checkForBlacklistedURLs(URL url) throws IOException { for (int i = 0; i < BLACKLISTED_HOSTS.length; i++) { if (url.getHost().equalsIgnoreCase(BLACKLISTED_HOSTS[i]) && url.getPort() == BLACKLISTED_PORTS[i]) { throw (new IOException( "http://" + BLACKLISTED_HOSTS[i] + ":" + BLACKLISTED_PORTS[i] + "/ is not a tracker")); } } } }