Here you can find the source of getLocalAddress()
private static String getLocalAddress() throws UnknownHostException
//package com.java2s; /*// w w w . j av a 2 s.c om * Ejisto, a powerful developer assistant * * Copyright (C) 2010-2013 Celestino Bellone * * Ejisto 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. * * Ejisto 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, see <http://www.gnu.org/licenses/>. */ import java.net.*; public class Main { private static String getLocalAddress() throws UnknownHostException { return InetAddress.getLocalHost().getHostAddress(); } }