Java IP Address to Long convertIPS2Long(String ip)

Description

convert IPS Long

License

Apache License

Declaration

public static final long convertIPS2Long(String ip) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

public class Main {
    public static final long convertIPS2Long(String ip) {
        char[] c = ip.toCharArray();
        byte[] b = { 0, 0, 0, 0 };
        for (int i = 0, j = 0; i < c.length;) {
            int d = (byte) (c[i] - '0');
            switch (c[i++]) {
            case '.':
                ++j;//from  ww w  .  j av  a  2  s .  c o  m
                break;
            default:
                if ((d < 0) || (d > 9))
                    return 0;
                if ((b[j] & 0xff) * 10 + d > 255)
                    return 0;
                b[j] = (byte) (b[j] * 10 + d);
            }
        }
        return 0x00000000ffffffffl & (b[0] << 24 | (b[1] & 0xff) << 16 | (b[2] & 0xff) << 8 | (b[3] & 0xff));
    }
}

Related

1. convertIpString2Long(String IP)
2. ip2Long(final String ip)
3. ip2long(String ip)
4. ip2long(String ip)