Java IP Address Get getLocalIP()

Description

Looks up the IP number of the local host.

License

Open Source License

Return

the found IP; returns "UNKNOWNIP" if it could not be found.

Declaration

public static String getLocalIP() 

Method Source Code

//package com.java2s;
/*/*from w  w  w .ja  va  2  s.com*/
 * #%L
 * Netarchivesuite - common
 * %%
 * Copyright (C) 2005 - 2014 The Royal Danish Library, the Danish State and University Library,
 *             the National Library of France and the Austrian National Library.
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 2.1 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-2.1.html>.
 * #L%
 */

import java.net.InetAddress;

import java.net.UnknownHostException;

public class Main {
    /**
     * Looks up the IP number of the local host. Note that Java does not guarantee that the result is IPv4 or IPv6.
     *
     * @return the found IP; returns "UNKNOWNIP" if it could not be found.
     */
    public static String getLocalIP() {
        String result;
        try {
            result = InetAddress.getLocalHost().getHostAddress();
        } catch (UnknownHostException e) {
            result = "UNKNOWNIP";
        }
        return result;
    }
}

Related

1. getLocalIP()
2. getLocalIP()
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9. getLocalIp()