检查参数是否为有效的压缩IPv6地址

/**

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements. See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership. The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License. You may obtain a copy of the License at

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing,

 * software distributed under the License is distributed on an

 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

 * KIND, either express or implied. See the License for the

 * specific language governing permissions and limitations

 * under the License.

 */

//package com.nowjava;

import java.util.regex.Pattern;
/** 
来 自 
nowjava
**/


public class Main {

    public static void main(String[] argv) throws Exception {

        String input = "nowjava.com";

        System.out.println(isIPv6HexCompressedAddress(input));

    }


    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;
/*nowjava.com - 时代Java*/

    /**

     * 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