Java Local Host Get getLocalHost()

Description

Get a cached copy of the local host.

License

Open Source License

Exception

Parameter	Description
UnknownHostException	if we cannot even resolve the address of "localhost"

Return

the host address

Declaration

public static synchronized InetAddress getLocalHost() throws UnknownHostException 

Method Source Code

//package com.java2s;
/* (C) Copyright 2009 Hewlett-Packard Development Company, LP
    //from   ww  w  .j ava 2s  .  c o m
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
    
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
Lesser General Public License for more details.
    
You should have received a copy of the GNU Lesser 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
    
For more information: www.smartfrog.org
    
*/

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

public class Main {
    private static InetAddress localHost = null;
    public static final String LOCALHOST = "localhost";

    /**
     * Get a cached copy of the local host. If we cannot determine our hostname (it happens), fall back
     * to using {@link #LOCALHOST} as the name, and look that up
     * @see InetAddress#getLocalHost()
     * @return the host address
     * @throws UnknownHostException if we cannot even resolve the address of "localhost"
     */
    public static synchronized InetAddress getLocalHost() throws UnknownHostException {
        if (localHost == null) {
            try {
                localHost = InetAddress.getLocalHost();
            } catch (UnknownHostException e) {
                localHost = InetAddress.getByName(LOCALHOST);
            }
        }
        return localHost;
    }
}

Related

1. createLocalHostID(int size)
2. getAllLocalHostNames()
3. getCanonicalLocalHostName()
4. getCanonicalLocalHostName()
5. getLocalHost()
6. getLocalhost()
7. getLocalHost()
8. getLocalHost()