Java 测试以查看给定的地址字符串是否表示文本IPv4地址。

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/**

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 * Copyright (C) 2009 Nortel, certain elements licensed under a Contributor Agreement.

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 * Contributors retain copyright to elements licensed under a Contributor Agreement.

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 * Licensed to the User under the LGPL license.

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 */

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//package com.nowjava;

//时 代 J a v a 公 众 号 - N o w J a v  a . c o m 提供

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public class Main {

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

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        String address = "nowjava.com";

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        System.out.println(isLiteralIPAddress(address));

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    }

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    /**

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     * Test to see if the given address string represents a literal IPv4 address.

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     * 

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     * @param address

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     *           The address string to be tested.

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     *           

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     * @return

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     *           True if literal IPv4 address, False otherwise.

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     */

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    public static boolean isLiteralIPAddress(String address) {

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        String[] octets = address.split("\\.", -1);

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        if (octets.length != 4) {

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            return false;

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        }

/*来 自 N o w J a v a . c o m*/

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        for (int i = 0; i < 4; i++) {

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            int octetValue = -1;

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            try {

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                octetValue = Integer.parseInt(octets[i]);

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            } catch (NumberFormatException e) {

/**代码未完, 请加载全部代码(NowJava.com).**/