Java IP Address Validate isIp(final String input)

Description

is Ip

License

Open Source License

Declaration

public static boolean isIp(final String input) 

Method Source Code

//package com.java2s;
import java.util.regex.Pattern;

public class Main {
    private static final Pattern IPV4_PATTERN = Pattern
            .compile("^(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}$");
    private static final Pattern IPV6_STD_PATTERN = Pattern.compile("^(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$");
    private static final Pattern IPV6_HEX_COMPRESSED_PATTERN = Pattern.compile(
            "^((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)::((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)$");

    public static boolean isIp(final String input) {
        if (null == input || "".equals(input)) {
            return false;
        }//  w w w.  ja v  a2 s  .c o m
        String ip = input.trim();

        return (isIPv4Address(ip) || isIPv6Address(ip));
    }

    public static boolean isIPv4Address(final String input) {
        return IPV4_PATTERN.matcher(input).matches();
    }

    public static boolean isIPv6Address(final String input) {
        return isIPv6StdAddress(input) || isIPv6HexCompressedAddress(input);
    }

    public static boolean isIPv6StdAddress(final String input) {
        return IPV6_STD_PATTERN.matcher(input).matches();
    }

    public static boolean isIPv6HexCompressedAddress(final String input) {
        return IPV6_HEX_COMPRESSED_PATTERN.matcher(input).matches();
    }
}

Related

1. isIp(Object obj)
2. isIP(String input)
3. isIp(String ip)
4. isIP(String ip)