Java Host Check checkHostIsAvailable(String hostName)

Description

check Host Is Available

License

Open Source License

Declaration

public static InetAddress checkHostIsAvailable(String hostName) 

Method Source Code

//package com.java2s;
/*/*from   ww w . ja  va 2  s.c  om*/
 * ################################################################
 *
 * ProActive Parallel Suite(TM): The Java(TM) library for
 *    Parallel, Distributed, Multi-Core Computing for
 *    Enterprise Grids & Clouds
 *
 * Copyright (C) 1997-2011 INRIA/University of
 *                 Nice-Sophia Antipolis/ActiveEon
 * Contact: proactive@ow2.org or contact@activeeon.com
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation; version 3 of
 * the License.
 *
 * This library 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
 * Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA
 *
 * If needed, contact us to obtain a release under GPL Version 2 or 3
 * or a different license than the AGPL.
 *
 *  Initial developer(s):               The ActiveEon Team
 *                        http://www.activeeon.com/
 *  Contributor(s):
 *
 * ################################################################
 * $ACTIVEEON_INITIAL_DEV$
 */

import java.net.InetAddress;
import java.net.UnknownHostException;

public class Main {
    public static InetAddress checkHostIsAvailable(String hostName) {
        try {
            InetAddress hostAddr = InetAddress.getByName(hostName.trim());
            /*
            if (!hostAddr.isReachable(30000)) {
            System.out.println("ERROR: InetAddress.isReachable is false for " + hostName);
            return null;
            }
             */
            return hostAddr;
        } catch (UnknownHostException e) {
            System.out.println("Unknow host error for host " + hostName + ": " + e);
            return null;
        }
    }
}

Related

1. checkHost(String host)
2. checkHost(String hostname)
3. checkHostName(String hostName)
4. isHostReachable(String host, int timeout)
5. isInternalHostname(String host)
6. isLocal(final String hostName)