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

class UrlChecker {

public static void main (String [] args) { pattern Mypattern = Pattern . compile ("^ ( (https ? | ftp) : // | (www | ftp) \\ .) [ a-zO-9-] + [a-z] + ) + ( [/ ?] . *) ?$" ); Scanner input = new Scanner (System . in); System.out.println ("Enter the Url to be checked: "); String name = input . nextLine (); Matcher Mymatcher = Mypattern . matcher (name); Boolen Myboolen = Mymatcher . matches (); if (Myboolen == true) { System.out.println ("Url is correct"); } else { System.out.println ("Url is incorrect"); } }

}