Java IP Address to Int ipToInt(String ip)

Description

ip To Int

License

Apache License

Declaration

public static int ipToInt(String ip) 

Method Source Code

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

public class Main {
    public static int ipToInt(String ip) {
        if (ip == null)
            return 0;
        char[] chars = ip.toCharArray();
        int i1, i2, i3;
        for (i1 = 0; i1 < chars.length && chars[i1] != '.'; i1++)
            ;//from  w  w w.ja  va2s  .co  m
        for (i2 = i1 + 1; i2 < chars.length && chars[i2] != '.'; i2++)
            ;
        for (i3 = i2 + 1; i3 < chars.length && chars[i3] != '.'; i3++)
            ;
        return (Integer.parseInt(ip.substring(0, i1), 10) << 24)
                | (Integer.parseInt(ip.substring(i1 + 1, i2), 10) << 16)
                | (Integer.parseInt(ip.substring(i2 + 1, i3), 10) << 8)
                | Integer.parseInt(ip.substring(i3 + 1, chars.length), 10);
    }
}

Related

1. IP2Int(String ip)
2. ip2int(String ipAddr)
3. ipToInt(final String addr)
4. ipToInt(String addr)
5. ipToInt(String address)
6. ipToInt(String ipAddr)
7. IpToInt(String strIp)
8. ipToInteger(String ip)
9. IPV4AddressStrToInteger(String ipAddressStr)