Java IP Address to Long ipV4AddressToLong(String ipAddress)

Description

Converts an IP address string like 192.168.0.1 to an internal long value

License

Open Source License

Parameter

Parameter	Description
ipAddress	a parameter

Exception

Parameter	Description
UnknownHostException	if the address is not a valid IPv4 address

Return

long the numerical representation of the address

Declaration

public static long ipV4AddressToLong(String ipAddress) throws UnknownHostException 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.net.InetAddress;
import java.net.UnknownHostException;

public class Main {
    /**/* www.j av  a2  s.  co  m*/
     * Converts an IP address string like 192.168.0.1 to an internal long value
     *
     * @param ipAddress
     * @return long the numerical representation of the address
     * @throws UnknownHostException if the address is not a valid IPv4 address
     */
    public static long ipV4AddressToLong(String ipAddress) throws UnknownHostException {

        byte[] bytes = InetAddress.getByName(ipAddress).getAddress();

        return convertByteToLong(bytes);
    }

    private static long convertByteToLong(byte[] ipBytes) {

        long unsignedInt = 0;

        for (int i = 0; i < ipBytes.length; i++) {
            unsignedInt |= ((0x000000FF & ((int) ipBytes[i])) << ((ipBytes.length - i - 1) * 8));
        }

        return unsignedInt & 0xFFFFFFFFL;
    }
}

Related

1. ipToLong(String ipAddress)
2. ipToLong(String ipStr)
3. ipToLong(String sip)
4. ipToLong(String strIP)
5. ipv4(long ip)
6. ipv4CidrToLong(String networkCidr)
7. ipV4ToLong(final String ipAddress)
8. ipv4ToLong(final String ipv4)
9. ipV4ToLong(String ip)