private static boolean checkShouldLoop() { // Note[01];
    System.out.print("\nThat was fun! Do you want to play again?"
	    + "\nPlease enter 1 for Yes, 0 for No: ");
    //Grab the first character of the user's response for if/else checking
    char chkChar = keyboard01.next().charAt(0);

    if (chkChar == '1' || chkChar == 'y' || chkChar == 'Y') {
      return true;}
    else if (chkChar == '0' || chkChar == 'n' || chkChar == 'N') {
      System.out.println("\nGoodbye!");
      return false;
    }
    else {
      System.out.println("That was an invalid selection; please try again!");
      return checkShouldLoop();
    }
  }