Java Network Interface Check retrieveNetworkInterfaces()

Description

Retrieves all InetAddress for the running VM, indexed by their name.

License

Open Source License

Exception

Parameter	Description
SocketException	an exception

Return

all for the running VM.

Declaration

public static Map<String, InetAddress> retrieveNetworkInterfaces() throws SocketException 

Method Source Code

//package com.java2s;
/******************************************************************************* 
 * Copyright (c) 2008 Red Hat, Inc. /*  w ww.jav a 2  s  .com*/
 * Distributed under license by Red Hat, Inc. All rights reserved. 
 * This program is made available under the terms of the 
 * Eclipse Public License v1.0 which accompanies this distribution, 
 * and is available at http://www.eclipse.org/legal/epl-v10.html 
 * 
 * Contributors: 
 * Xavier Coulon - Initial API and implementation 
 ******************************************************************************/

import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;

public class Main {
    /**
     * Retrieves all {@link InetAddress} for the running VM, indexed by their name.
     * @return all {@link InetAddress} for the running VM.
     * @throws SocketException
     */
    public static Map<String, InetAddress> retrieveNetworkInterfaces() throws SocketException {
        final Map<String, InetAddress> namedAddresses = new HashMap<String, InetAddress>();
        final Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces();
        for (NetworkInterface netint : Collections.list(nets)) {
            final Enumeration<InetAddress> inetAddresses = netint.getInetAddresses();
            for (InetAddress inetAddress : Collections.list(inetAddresses)) {
                if ((inetAddress instanceof Inet6Address) || inetAddress.isAnyLocalAddress()
                        || inetAddress.isLinkLocalAddress() || inetAddress.isLoopbackAddress()
                        || inetAddress.isMulticastAddress()) {
                    continue;
                }
                namedAddresses.put(netint.getDisplayName(), inetAddress);
            }
        }
        return namedAddresses;
    }
}

Related

1. isNetworkAvailable()
2. isNetworkException(Exception e)
3. isNetworkProblem(final Throwable ex)
4. isUpAndNotLoopback(final NetworkInterface ni)
5. printInterface(NetworkInterface netIf)
6. sortInterfaces(List interfaces)