get Current Host Ip Address - Java Network

Java examples for Network:IP Address

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Description

get Current Host Ip Address

Demo Code

/*******************************************************************************
 * Copyright (c) 2014 eBay Software Foundation.
 *
 * 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./*ww w  .j  a  v  a2s  . c o m*/
 *******************************************************************************/
//package com.java2s;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;

public class Main {
    public static void main(String[] argv) throws Exception {
        System.out.println(getCurrentHostIpAddress());
    }

    public static String getCurrentHostIpAddress() {
        Enumeration<NetworkInterface> n;
        try {
            n = NetworkInterface.getNetworkInterfaces();
            for (; n.hasMoreElements();) {
                NetworkInterface e = n.nextElement();
                Enumeration<InetAddress> a = e.getInetAddresses();
                for (; a.hasMoreElements();) {
                    InetAddress addr = a.nextElement();

                    String ipAddress = addr.getHostAddress();
                    if (!ipAddress.equals("127.0.0.1")
                            && ipAddress.indexOf(":") == -1) {
                        return ipAddress;
                    }
                }
            }
            throw new RuntimeException(
                    "Can't get the current host ip address.");
        } catch (SocketException e1) {
            throw new RuntimeException(
                    "Can't get the current host ip address:" + e1);
        }
    }
}

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