Java Network Interface Get getLocalNetworkInterface()

Description

get Local Network Interface

License

Apache License

Declaration

public static NetworkInterface getLocalNetworkInterface() 

Method Source Code

//package com.java2s;
/*/*w  w w .j  a va2 s.  co m*/
 * (C) Copyright 2015-2016 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Contributors:
 *   ohun@live.cn (??)
 */

import java.net.*;
import java.util.Enumeration;

public class Main {
    public static NetworkInterface getLocalNetworkInterface() {
        Enumeration<NetworkInterface> interfaces;
        try {
            interfaces = NetworkInterface.getNetworkInterfaces();
        } catch (SocketException e) {
            throw new RuntimeException("NetworkInterface not found", e);
        }
        while (interfaces.hasMoreElements()) {
            NetworkInterface networkInterface = interfaces.nextElement();
            Enumeration<InetAddress> addresses = networkInterface.getInetAddresses();
            while (addresses.hasMoreElements()) {
                InetAddress address = addresses.nextElement();
                if (address.isLoopbackAddress())
                    continue;
                if (address.getHostAddress().contains(":"))
                    continue;
                if (address.isSiteLocalAddress())
                    return networkInterface;
            }
        }
        throw new RuntimeException("NetworkInterface not found");
    }
}

Related

1. getInterfaces(final String interfaceName)
2. getKey()
3. getLinkLocalScopeId()
4. getLocalInterfaces()
5. getLocalMac()
6. getLoopbackInterface()
7. getLoopbackInterfaceName()
8. getLoopbackNIF()
9. getMac()