//Ask user if they want to play again
System.out.print("\n\t\t Would you like to play again?(Y/N) ");
playAgain = userInput.next();
playAgain = playAgain.toUpperCase();
           //Error check  to confirm that the users response was valid
           while(!playAgain.equals("Y") || !playAgain.equals("N"))
                 {
                     System.out.println("ERROR: Your entry " + playAgain + " is not valid please enter Y for yes or N for no.");
                     System.out.print("\n\t\t Would you like to play again?(Y/N) ");
                     playAgain = userInput.next()
                     playAgain = playAgain.toUpperCase();
                 }