Java IP Address Get getAllIPAddresses()

Description

Retrieves all the IP addresses of the local computer.

License

Open Source License

Declaration

public static Collection<InterfaceAddress> getAllIPAddresses() throws SocketException 

Method Source Code

//package com.java2s;
/*******************************************************************************
 *   //from  www.  j  a va2  s. co m
 *   Copyright 2008 Mytech Ingenieria Aplicada <http://www.mytechia.com>, Gervasio Varela, Alejandro Paz
 *   Victor Sonora
 * 
 *   This file is part of Mytechia Commons.
 *
 *   Mytechia Commons 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 3 of the License, or
 *   (at your option) any later version.
 *
 *   Mytechia Commons 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 Mytechia Commons.  If not, see <http://www.gnu.org/licenses/>.
 * 
 ******************************************************************************/

import java.net.InetAddress;
import java.net.InterfaceAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;

public class Main {
    /**
     * Retrieves all the IP addresses of the local computer.
     * The loopback address (127.0.0.1) will not be included.
     */
    public static Collection<InterfaceAddress> getAllIPAddresses() throws SocketException {
        ArrayList<InterfaceAddress> direcciones = new ArrayList();
        InterfaceAddress ipLoopback = null;

        try {
            Enumeration ifaces = NetworkInterface.getNetworkInterfaces();
            while (ifaces.hasMoreElements()) {
                NetworkInterface iface = (NetworkInterface) ifaces.nextElement();
                for (InterfaceAddress ips : iface.getInterfaceAddresses()) {
                    InetAddress ia = ips.getAddress();
                    if (!ia.getHostAddress().contains(":")) {
                        if (ia.isLoopbackAddress()) {
                            ipLoopback = ips;
                        } else {
                            direcciones.add(ips);
                        }
                    }
                }
            }

            if ((direcciones.isEmpty()) && (ipLoopback != null)) {
                direcciones.add(ipLoopback);
            }
        } catch (SocketException e) {
            throw e;
        }

        return direcciones;
    }
}

Related

1. getAllHostAddresses(boolean ignoreLoopback, boolean ignoreIP6)
2. getAllHostIPs(String hostName)
3. getAllInternalHostIPs(String hostName)
4. getAllIp()
5. getAllIPsAndAssignedBroadcastAddresses()
6. getALLLocalHostIP()
7. getAllLocalIP()
8. getAllLocalIP()