Here you can find the source of getLocalHost()
public static InetSocketAddress getLocalHost()
//package com.java2s; /*/*from www . j a v a2 s. c o m*/ Calimero 2 - A library for KNX network access Copyright (c) 2006, 2011 B. Malinowsky 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. 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.InetAddress; import java.net.InetSocketAddress; import java.net.UnknownHostException; public class Main { private static boolean printLocalHost = true; public static InetSocketAddress getLocalHost() { // don't trust default local host resolving of Java try { final InetSocketAddress addr; final InetAddress local = InetAddress.getLocalHost(); //if (local.isLoopbackAddress()) // addr = new InetSocketAddress(InetAddress.getByName("192.168.1.102"), 0); //else addr = new InetSocketAddress(local, 0); if (printLocalHost) { printLocalHost = false; System.out.println(); System.out.println("\t\tLocal host used in tests:"); System.out.println("\t\t========================="); System.out.println("\t\t " + addr); System.out.println(); } return addr; } catch (final UnknownHostException e) { } return null; } }