Java Network Interface Get getDefaultNetworkInterface()

Description

Selects the default network interface

License

Open Source License

Return

network interface

Declaration

public static NetworkInterface getDefaultNetworkInterface() 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Enumeration;

public class Main {
    /**//from   w  ww  .  ja  v a 2  s. c o m
     * Selects the default network interface
     * @return network interface
     */
    public static NetworkInterface getDefaultNetworkInterface() {
        try {
            Enumeration<NetworkInterface> networks = NetworkInterface.getNetworkInterfaces();
            while (networks.hasMoreElements()) {
                NetworkInterface ni = networks.nextElement();
                Enumeration<InetAddress> addresses = ni.getInetAddresses();
                boolean hasAddress = false;
                while (addresses.hasMoreElements()) {
                    InetAddress ia = addresses.nextElement();
                    if (!(ia.isAnyLocalAddress() || ia.isLinkLocalAddress() || ia.isLoopbackAddress()
                            || ia.isSiteLocalAddress() || ni.isPointToPoint())) {
                        if (!hasAddress) {
                            return ni;
                        }
                    }
                }
            }
        } catch (Exception ex) {

        }
        return null;
    }
}

Related

1. getAllLocalUsingNetworkInterface()
2. getAvailableNetworkInterface()
3. getBroadcast()
4. getCustomMACFormat(NetworkInterface inte)
5. getDefaultInterface()
6. getFirstMACAdress()
7. getFreeTunnelInterface()
8. getGlobalI()
9. getGlobalInterfaces()