Java Regex example

Check IP regex


import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.Scanner;

class Solution{

    public static void main(String []args){
        Scanner in = new Scanner(System.in);
        while(in.hasNext()){
            String IP = in.next();
            System.out.println(IP.matches(new MyRegex().pattern));
        }

    }
}

class MyRegex{
    String Zip="([\\d]{1,2}|(0|1)[\\d]{1,2}|(2)[0-5]{1,2})";
    String pattern=Zip + "\\."+Zip+"\\."+Zip+"\\."+Zip;
}