is Ip address by Regex - Java java.util.regex

Java examples for java.util.regex:Match IP Address

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Description

is Ip address by Regex

Demo Code


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

public class Main {

    public static final String IPADDRESS = "((?:(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d)\\.){3}(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d))";

    public static boolean isIpaddress(String str) {
        return Regular(str, IPADDRESS);
    }//from w  ww  . ja va2s.  c  om

    private static boolean Regular(String str, String pattern) {
        if (null == str || str.trim().length() <= 0)
            return false;
        Pattern p = Pattern.compile(pattern);
        Matcher m = p.matcher(str);
        return m.matches();
    }
}

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