Here you can find the source of getLocalHostName()
public static String getLocalHostName()
//package com.java2s; /*//w w w.j av a 2s. com * Copyright 2002-2016 Jalal Kiswani. * * 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. */ import java.net.InetAddress; import java.net.UnknownHostException; public class Main { /** * Gets the local host name. * * @return the local host name */ public static String getLocalHostName() { try { return InetAddress.getLocalHost().getHostName(); } catch (final UnknownHostException e) { System.err.println("Unable to get host name"); return ""; } } }