Java IP Address to Long ipToLong(final String addr)

Description

Converts the text form of an IP address to a long.

License

Open Source License

Parameter

Parameter	Description
addr	a parameter

Declaration

public static long ipToLong(final String addr) 

Method Source Code

//package com.java2s;
/**/*from   w w  w.j a va  2 s .  c o  m*/
 * Copyright (C) 2011 Rafael Bedia
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 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 Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 */

public class Main {
    /**
     * Converts the text form of an IP address to a long.
     * 
     * @param addr
     * @return
     */
    public static long ipToLong(final String addr) {
        final String[] addressBytes = addr.split("\\.");

        if (addressBytes.length != 4) {
            throw new IllegalArgumentException("IPs have the format x.x.x.x");
        }

        long ip = 0;
        for (int i = 0; i < 4; i++) {
            ip <<= 8;
            ip |= Integer.parseInt(addressBytes[i]);
        }
        return ip;
    }
}

Related

1. ip2long(String ip)
2. ip2Long(String ipaddress)
3. ip2Long(String ipAddress)
4. ipToLong(byte[] address)
5. ipToLong(byte[] octets)
6. ipToLong(String addr)
7. ipTolong(String address)
8. ipToLong(String ip)
9. ipToLong(String ip)