Java InetAddress to addressToLong(InetAddress address)

Description

Converts the bytes that make up an internet address into the corresponding integer value to make it easier to perform bit-masking operations on them.

License

Open Source License

Parameter

Parameter	Description
address	an address whose integer equivalent is desired

Return

the integer corresponding to that address

Declaration

@SuppressWarnings("WeakerAccess")
public static long addressToLong(InetAddress address)

Method Source Code

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

import java.net.InetAddress;

public class Main {
    /**/*  w w w  .j  ava 2s.  co m*/
     * Converts the bytes that make up an internet address into the corresponding integer value to make
     * it easier to perform bit-masking operations on them.
     *
     * @param address an address whose integer equivalent is desired
     *
     * @return the integer corresponding to that address
     */
    @SuppressWarnings("WeakerAccess")
    public static long addressToLong(InetAddress address) {
        long result = 0;
        for (byte element : address.getAddress()) {
            result = (result << 8) + unsign(element);
        }
        return result;
    }

    /**
     * Converts a signed byte to its unsigned int equivalent in the range 0-255.
     *
     * @param b a byte value to be considered an unsigned integer
     *
     * @return the unsigned version of the byte
     */
    public static int unsign(byte b) {
        return b & 0xff;
    }
}