Java Network Interface Get getLoopbackInterface()

Description

get Loopback Interface

License

Open Source License

Declaration

public static String getLoopbackInterface() 

Method Source Code

//package com.java2s;
/**/*  w ww  . j av  a 2s  .com*/
 * Copyright 2007-2016, Kaazing Corporation. All rights reserved.
 *
 * 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.
 */

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

public class Main {
    public static String getLoopbackInterface() {
        String networkInterface = "";
        try {
            Enumeration<NetworkInterface> interfaces = NetworkInterface
                    .getNetworkInterfaces();
            while (interfaces.hasMoreElements()) {
                NetworkInterface resolvedNetworkInterface = interfaces
                        .nextElement();
                if (resolvedNetworkInterface.isLoopback()) {
                    networkInterface = resolvedNetworkInterface
                            .getDisplayName();
                    break;
                }
            }
            if (networkInterface.equals("")) {
                throw new RuntimeException(
                        "No loopback interfaces could be found");
            }
        } catch (SocketException socketEx) {
            throw new RuntimeException("No interfaces could be found");
        }
        return networkInterface;
    }
}

Related

1. getKey()
2. getLinkLocalScopeId()
3. getLocalInterfaces()
4. getLocalMac()
5. getLocalNetworkInterface()
6. getLoopbackInterfaceName()
7. getLoopbackNIF()
8. getMac()
9. getMacBytes()