2 errors. Can any1 amend the errors plz :-)

Question

   This program lets the user play HighLow, a simple card game that is
   described in the output statements at the beginning of the main() routine.
   After the user plays several games, the user's average score is
   reported.
class HighLow {
   public static void main(String[] args) {
      int gamesPlayed = 0;     // Number of games user has played.
      int sumOfScores = 0;     // The sum of all the scores from all the
                               //      games played.
      double averageScore;     // Average score, computed by dividing
                               //      sumOfScores by gamesPlayed.
      boolean playAgain;       // Record user's response when user is asked
                               //   whether he wants to play another game.
      do {
         int scoreThisGame;        // Score for one game.
         scoreThisGame = play();   // Play the game and get the score.
         sumOfScores += scoreThisGame;
         gamesPlayed++;
         System.out.println("Play again? ");
         playAgain = TextIO.getlnBoolean();
      } while (playAgain);
      averageScore = ((double)sumOfScores) / gamesPlayed;
      System.out.println();
      System.out.println("You played " + gamesPlayed + " games.");
      System.out.println("Your average score was " + averageScore);
   }  // end main()
   static int play() {
         // Lets the user play one game of HighLow, and returns the
         // user's score in the game.
      Deck deck = new Deck();  // Get a new deck of cards, and store
                               //   a reference to it in the variable, Deck.
      Card currentCard;  // The current card, which the user sees.
      Card nextCard;     // The next card in the deck.  The user tries
                         //    to predict whether this is higher or lowe
                         //    than the current card.
      int correctGuesses ;  // The number of correct predictions the
                            //   user has made.  At the end of the game,
                            //   this will be the user's score.
      char guess;   // The user's guess.  'H' if the user predicts that
                    //   the next card will be higher, 'L' if the user
                    //   predicts that it will be lower.
      deck.shuffle();
      correctGuesses = 0;
      currentCard = deck.dealCard();
      System.out.println("The first card is the " + currentCard);
      while (true) {  // Loop ends when user's prediction is wrong.
         /* Get the user's predition, 'H' or 'L'. */
         System.out.println("Will the next card be higher (H) or lower (L)?  ");
         do {
             guess = TextIO.getlnChar();
             guess = Character.toUpperCase(guess);
             if (guess != 'H' && guess != 'L')
                System.out.println("Please respond with H or L:  ");
         } while (guess != 'H' && guess != 'L');
         /* Get the next card and show it to the user. */
         nextCard = deck.dealCard();
         System.out.println("The next card is " + nextCard);
         /* Check the user's prediction. */
         if (nextCard.getValue() == currentCard.getValue()) {
           System.out.println("The value is the same as the previous card.");
            System.out.println("You lose on ties.  Sorry!");
            break;  // End the game.
         else if (nextCard.getValue() > currentCard.getValue()) {
            if (guess == 'H') {
                System.out.println("Your prediction was correct.");
                correctGuesses++;
            else {
                System.out.println("Your prediction was incorrect.");
                break;  // End the game.
         else {  // nextCards is lower
            if (guess == 'L') {
                System.out.println("Your prediction was correct.");
                correctGuesses++;
            else {
                System.out.println("Your prediction was incorrect.");
                break;  // End the game.
         /* To set up for the next interation of the loop, the nextCard
            becomes the currentCard, since the currentCard has to be
            the card that the user sees, and the nextCard will be
            set to the next card in the deck after the user makes
            his prediction.  */
         currentCard = nextCard;
         System.out.println();
         System.out.println("The card is " + currentCard);
      } // end of while loop
      System.out.println();
      System.out.println("The game is over.");
      System.out.println("You made " + correctGuesses + " correct predictions.");
      System.out.println();
      return correctGuesses;
   }  // end play()
} // end class HighLow

Answer 1

The program also uses a class card
   An object of class card represents one of the 52 cards in a
   standard deck of playing cards.  Each card has a suit and
   a value.
public class Card {
    public final static int SPADES = 0,       // Codes for the 4 suits.
                            HEARTS = 1,
                            DIAMONDS = 2,
                            CLUBS = 3;
    public final static int ACE = 1,          // Codes for the non-numeric cards.
                            JACK = 11,        //   Cards 2 through 10 have their
                            QUEEN = 12,       //   numerical values for their codes.
                            KING = 13;
    private final int suit;   // The suit of this card, one of the constants
                              //    SPADES, HEARTS, DIAMONDS, CLUBS.
    private final int value;  // The value of this card, from 1 to 11.
    public Card(int theValue, int theSuit) {
            // Construct a card with the specified value and suit.
            // Value must be between 1 and 13.  Suit must be between
            // 0 and 3.  If the parameters are outside these ranges,
            // the constructed card object will be invalid.
        value = theValue;
        suit = theSuit;
    public int getSuit() {
            // Return the int that codes for this card's suit.
        return suit;
    public int getValue() {
            // Return the int that codes for this card's value.
        return value;
    public String getSuitAsString() {
            // Return a String representing the card's suit.
            // (If the card's suit is invalid, "??" is returned.)
        switch ( suit ) {
           case SPADES:   return "Spades";
           case HEARTS:   return "Hearts";
           case DIAMONDS: return "Diamonds";
           case CLUBS:    return "Clubs";
           default:       return "??";
    public String getValueAsString() {
            // Return a String representing the card's value.
            // If the card's value is invalid, "??" is returned.
        switch ( value ) {
           case 1:   return "Ace";
           case 2:   return "2";
           case 3:   return "3";
           case 4:   return "4";
           case 5:   return "5";
           case 6:   return "6";
           case 7:   return "7";
           case 8:   return "8";
           case 9:   return "9";
           case 10:  return "10";
           case 11:  return "Jack";
           case 12:  return "Queen";
           case 13:  return "King";
           default:  return "??";
    public String toString() {
           // Return a String representation of this card, such as
           // "10 of Hearts" or "Queen of Spades".
        return getValueAsString() + " of " + getSuitAsString();
} // end class Cardamd a class deck
    An object of type Deck represents an ordinary deck of 52 playing cards.
    The deck can be shuffled, and cards can be dealt from the deck.
public class Deck {
    private Card[] deck;   // An array of 52 Cards, representing the deck.
    private int cardsUsed; // How many cards have been dealt from the deck.
    public Deck() {
           // Create an unshuffled deck of cards.
       deck = new Card[52];
       int cardCt = 0; // How many cards have been created so far.
       for ( int suit = 0; suit <= 3; suit++ ) {
          for ( int value = 1; value <= 13; value++ ) {
             deck[cardCt] = new Card(value,suit);
             cardCt++;
       cardsUsed = 0;
    public void shuffle() {
          // Put all the used cards back into the deck, and shuffle it into
          // a random order.
        for ( int i = 51; i > 0; i-- ) {
            int rand = (int)(Math.random()*(i+1));
            Card temp = deck;
deck[i] = deck[rand];
deck[rand] = temp;
cardsUsed = 0;
public int cardsLeft() {
// As cards are dealt from the deck, the number of cards left
// decreases. This function returns the number of cards that
// are still left in the deck.
return 52 - cardsUsed;
public Card dealCard() {
// Deals one card from the deck and returns it.
if (cardsUsed == 52)
shuffle();
cardsUsed++;
return deck[cardsUsed - 1];
} // end class Deck