Here you can find the source of getLocalHostName()
public static String getLocalHostName()
//package com.java2s; /*//from w ww . j a v a 2s . co m Copyright 2008 Filter Logic Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ public class Main { /** * Get this computer's name. * @return String containing computer name. Empty string returned if exception occurs. */ public static String getLocalHostName() { try { java.net.InetAddress localMachine = java.net.InetAddress.getLocalHost(); return localMachine.getHostName(); } catch (java.net.UnknownHostException uhe) { System.out.println(uhe.toString()); return ""; } } }