Java IP Address Validate isIPAddress(final String s)

Description

Returns whether the supplied string represents an IP address.

License

Open Source License

Parameter

Parameter	Description
s	to match

Return

whether the supplied string represents an IP address

Declaration

public static boolean isIPAddress(final String s) 

Method Source Code

//package com.java2s;
/* See LICENSE for licensing and NOTICE for copyright. */

import java.util.regex.Pattern;

public class Main {
    /** Pattern to match ipv4 addresses. */
    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}$");
    /** Pattern to match ipv6 addresses. */
    private static final Pattern IPV6_STD_PATTERN = Pattern.compile("^(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$");
    /** Pattern to match ipv6 hex compressed addresses. */
    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})*)?)$");

    /**//  w  ww  . j  av  a 2  s  .  com
     * Returns whether the supplied string represents an IP address. Matches both IPv4 and IPv6 addresses.
     *
     * @param  s  to match
     *
     * @return  whether the supplied string represents an IP address
     */
    public static boolean isIPAddress(final String s) {
        return s != null && (IPV4_PATTERN.matcher(s).matches() || IPV6_STD_PATTERN.matcher(s).matches()
                || IPV6_HEX_COMPRESSED_PATTERN.matcher(s).matches());
    }
}

Related

1. isIP(String src)
2. isIP(String str)
3. isIp(String str)
4. isIp(String str)
5. isIP4(String val)
6. isIpAddress(String addr)
7. isIpAddress(String ip)
8. isIPAddress(String ipAddress)
9. isIpAddress(String ipAddress)