For JAVA ONLY PLEASE!! 3) Having a secure password is a very important practice,

Question

For JAVA ONLY PLEASE!!

3) Having a secure password is a very important practice, when much of our information is stored online. Write a program that validates a new password, following these rules:

must be 8 characters long

at least one upper case letter and one lower case letter

at least on digit

Write a program that asks for a password, than asks again to confirm it. If the passwords do not match or the rules are not fulfilled, prompt again. Your program should include a method that checks whether a password is valid.

If you could also print the outputs I would greatly appericate it , Thank you !!

Explanation / Answer

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

/**
* @author Srinivas Palli
*
*/
public class PasswordValidator {

   private static Pattern pattern;
   private static Matcher matcher;

   private static final String PASSWORD_PATTERN = "((?=.*[a-z])(?=.*\d)(?=.*[A-Z]).{8,40})";

   /**
   * @param password
   * @return
   */
   public static boolean validate(final String password) {
       pattern = Pattern.compile(PASSWORD_PATTERN);
       matcher = pattern.matcher(password);
       return matcher.matches();

   }
  
   public static void main(String[] args) {
       Scanner scanner=new Scanner(System.in);
      
       System.out.print("Enter the Password:");
       String password=scanner.nextLine();

       System.out.print("Confirm Password:");
       String confirmPassword=scanner.nextLine();
      
       if(password.equals(confirmPassword)){
           if(validate(password))
               System.out.println("Password is Valid");
               else
                   System.out.println("Password is Invalid");
                  
       }else{
           System.out.println("Password and Confirm Password does not match");
       }
      
   }
}

OUTPUT:

Test1:
Enter the Password:hi2Bkihertg
Confirm Password:hi2Bkihertg
Password is Valid

Test2:
Enter the Password:wes
Confirm Password:re
Password and Confirm Password does not match

Test3:
Enter the Password:erddfr
Confirm Password:erddfr
Password is Invalid

Test3:
Enter the Password:Wsdffggfghy
Confirm Password:Wsdffggfghy
Password is Invalid

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