Java Network Interface Get getAllLocalInterfaces()

Description

Get all the interfaces which are not loopback ones

License

Open Source License

Declaration

public static Set<NetworkInterface> getAllLocalInterfaces() 

Method Source Code

//package com.java2s;
/**/*  w  w w  .j  a  v a  2 s .  c  o  m*/
 * PETALS - PETALS Services Platform. Copyright (c) 2008 EBM Websourcing,
 * http://www.ebmwebsourcing.com/
 * 
 * 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
 * 
 * -------------------------------------------------------------------------
 * $Id$
 * -------------------------------------------------------------------------
 */

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Set;

public class Main {
    /**
     * Get all the interfaces which are not loopback ones
     * 
     * @return
     */
    public static Set<NetworkInterface> getAllLocalInterfaces() {
        Set<NetworkInterface> result = new HashSet<NetworkInterface>();
        try {
            Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces();
            while (e.hasMoreElements()) {
                NetworkInterface ni = e.nextElement();

                Enumeration<InetAddress> set = ni.getInetAddresses();
                // assume that all the inet addresses of the interface are all
                // loopback or not all loopback...
                if (set.hasMoreElements()) {
                    InetAddress address = set.nextElement();
                    if (!address.isLoopbackAddress()) {
                        result.add(ni);
                    }
                }
            }
        } catch (SocketException e) {
        }
        return result;
    }

    /**
     * Test if the given address is a loopback one ie localhost or 127.0.0.1
     * 
     * @param addr
     * @return
     */
    public static boolean isLoopbackAddress(InetAddress addr) {
        return addr.isLoopbackAddress();
        // JAVA 6
        // boolean result = false;
        // Set<NetworkInterface> itfs = getAllInterfaces();
        // for (NetworkInterface networkInterface : itfs) {
        // try {
        // if (networkInterface.isLoopback()) {
        // Enumeration<InetAddress> e = networkInterface.getInetAddresses();
        // while (e.hasMoreElements()) {
        // InetAddress elem = e.nextElement();
        // if (elem.equals(addr)) {
        // return true;
        // }
        // }
        // }
        // } catch (SocketException e) {
        // }
        // }
        // return result;
    }
}

Related

1. getAllAvailableInterfaces()
2. getAllAvailableInterfaces()
3. getAllAvailableInterfaces()
4. getAllInterfaces()
5. getAllInterfaces()
6. getAllLocalUsingNetworkInterface()
7. getAvailableNetworkInterface()
8. getBroadcast()
9. getCustomMACFormat(NetworkInterface inte)