Java Loopback Address Get getLoopbackAddress()

Description

Get the loopback interface name.

License

Open Source License

Return

the loopback interface name.

Declaration

public static InetAddress getLoopbackAddress() 

Method Source Code

//package com.java2s;
/*//from w w  w  .j  a v  a  2 s . c o  m
 *
 * JMeta - Meta's java implementation
 *
 * Copyright (C) 2013-2015 Pablo Joubert
 * Copyright (C) 2013-2015 Thomas Lavocat
 * Copyright (C) 2013-2015 Nicolas Michon
 *
 * This file is part of JMeta.
 *
 * JMeta 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, either version 3 of the
 * License, or (at your option) any later version.
 *
 * JMeta 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 program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

import java.net.Inet4Address;

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;

import java.util.Collections;
import java.util.Enumeration;

public class Main {
    /**
     * Get the loopback interface name.
     *
     * @return the loopback interface name.
     */
    public static InetAddress getLoopbackAddress() {
        try {
            for (NetworkInterface netIf : Collections.list(NetworkInterface.getNetworkInterfaces())) {
                if (netIf == null) {
                    continue;
                }
                if (netIf.isLoopback()) {
                    Enumeration<InetAddress> addrs = netIf.getInetAddresses();
                    while (addrs.hasMoreElements()) {
                        InetAddress addr = addrs.nextElement();
                        if (addr instanceof Inet4Address) {
                            return addr;
                        }
                    }
                    //return netIf.getInetAddresses().nextElement();
                }
            }
        } catch (SocketException ex) {
        }
        return null;
    }
}

Related

1. getLoopBackAddress()
2. getLoopbackAddress()