Here you can find the source of pingUsingInetAddress()
private static boolean pingUsingInetAddress()
//package com.java2s; /*/*from w w w . j a v a 2s . c o m*/ * This file is part of Minus-Java. * * Minus-Java 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. * * Minus-Java 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with Minus-Java. If not, see <http://www.gnu.org/licenses/>. */ import java.net.InetAddress; import java.util.concurrent.TimeUnit; public class Main { private static boolean pingUsingInetAddress() { try { return InetAddress.getByName("4.2.2.2").isReachable((int) TimeUnit.SECONDS.toMillis(15)); } catch (Exception e) { return false; } } }