Java IP Address Validate isIPv6HexCompressedAddress(final String input)

Description

Checks whether the parameter is a valid compressed IPv6 address

License

Apache License

Parameter

Parameter	Description
input	the address string to check for validity

Return

true if the input parameter is a valid compressed IPv6 address

Declaration

public static boolean isIPv6HexCompressedAddress(final String input) 

Method Source Code

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

import java.util.regex.Pattern;

public class Main {
    private static final Pattern IPV6_HEX_COMPRESSED_PATTERN = Pattern
            .compile("^(([0-9A-Fa-f]{1,4}(:[0-9A-Fa-f]{1,4}){0,5})?)" + // 0-6 hex fields
                    "::" + "(([0-9A-Fa-f]{1,4}(:[0-9A-Fa-f]{1,4}){0,5})?)$");
    private static final char COLON_CHAR = ':';
    private static final int MAX_COLON_COUNT = 7;

    /**/*from   w  ww  .ja  v  a 2  s  .co  m*/
     * Checks whether the parameter is a valid compressed IPv6 address
     *
     * @param input the address string to check for validity
     * @return true if the input parameter is a valid compressed IPv6 address
     */
    public static boolean isIPv6HexCompressedAddress(final String input) {
        int colonCount = 0;
        for (int i = 0; i < input.length(); i++) {
            if (input.charAt(i) == COLON_CHAR) {
                colonCount++;
            }
        }
        return colonCount <= MAX_COLON_COUNT && IPV6_HEX_COMPRESSED_PATTERN.matcher(input).matches();
    }
}

Related

1. isIPv6(String address)
2. isIpV6Address(CharSequence address)
3. isIPv6Address(final String input)
4. isIPv6Address(final String input)
5. isIPv6Address(String _ipAddress)
6. isIPv6HexCompressedAddress(final String input)
7. isIPv6HexCompressedAddress(String ip)
8. isIPv6LiteralAddress(String src)
9. isIpV6RegexValid(String strIp)