Question

1 Write a class Card whose instances represent a single playing card from a deck of cards. Playing cards have two distinguishing properties an integer for the rank (1 (corresponding to Ace) ,2,3, 13 (correspond ing to King) and suit (Spades, Hearts, Diamonds, or Clubs). Make the suit an enumerated data type. Include getters and setters and a method that tests if a card is valid. Write a class named Deck whose instances are full decks of 52 cards 2. An instance of FullDeck has only one attribute that is an array of 52 Cards Write a constructor that initializes the array with 52 (unshuf fled) Card objects, assigning a different value to each card. Write a class shuffle that shuffles a decki and a method dealCard that returns a card from the top of the deck. Update the deck Iaccordingly after each deal Part II 3. Write an application HighLowGame that lets the user play the following game: a deck is shuffled and a first card is dealt. The user must guess whether the next card is higher or lower. If the user guesses correctly, the game continues until the user guesses incorrectly. The game is then over and the player's score is the number of correct guesses

CS102 : JAVA Object-Oriented Programming.

Answer 1

import java.lang.Math;

public class Card {

   static final String[] SUITS = { "Spades", "Hearts", "Diamonds", "Clubs" };
   private int rank;
   private String suit;

   public Card(int rank, String suit) {
       this.rank = rank;
       this.suit = suit;
   }

   public int getRank() {
       return rank;
   }

   public String getSuit() {
       return suit;
   }

   public void setRank(int rank) {
       this.rank = rank;
   }

   public void setSuit(String suit) {
       this.suit = suit;
   }

   public boolean isValid() {
       if ((this.getRank() < 1) || (this.getRank() > 13))
           return false;
       else {
           for (String suit : SUITS) {
               if (this.getSuit().equalsIgnoreCase(suit))
                   return true;
           }
       }

       return false;
   }

   @Override
   public String toString() {
       String str = ((this.rank == 1) ? "Ace"
               : ((this.rank == 11) ? "Jack"
                       : ((this.rank == 12) ? "Queen" : ((this.rank == 13) ? "King" : this.rank))))
               + " of " + this.suit;
       return str;
   }
}

//Deck.java class

public class Deck {
  
   private static final int MAX = 52;
   private Card[] deck;
   public Deck() {
       this.deck = new Card[MAX];
       int count = 0;

       for (String suit : Card.SUITS) {
           for (int i = 0; i < 13; i++) {
               this.deck[count++] = new Card((i + 1), suit);
           }
       }
   }

   @Override
   public String toString() {
       StringBuffer sb = new StringBuffer();
       for (Card card : deck) {
           sb.append(card + "\n");
       }
       return sb.toString();
   }

   public static void main(String args[]) {

       Deck deck = new Deck();
       System.out.println(deck);
   }

}

Sample Output:

a Javadoc Declaration Console 3 <terminated Deck [Java Application] C Program FilesJavaljdk1.8.0_101\bin javaw.exe (Feb 17, 2017, 1:49:02 AM Ace of Spades 2 of Spades 3 of Spades 4 of Spades 5 of Spades 6 of Spades 7 of Spades 8 of Spades 9 of Spades 10 of Spades Jack of Spades Queen of Spade:s King of Spades Ace of Hearts 2 of Hearts 3 of Hearts 4 of Hearts 5 of Hearts 6 of Hearts 7 of Hearts 8 of Hearts 9 of Hearts 10 of Hearts

Jack of Hearts Queen of Heart:s King of Hearts Ace of Diamonds 2 of Diamonds 3 of Diamonds 4 of Diamonds 5 of Diamonds 6 of Diamonds 7 of Diamonds 8 of Diamonds 9 of Diamonds 10 of Diamonds Jack of Diamonds Queen of Diamonds King of DiamondS Ace of Clubs 2 of Clubs 3 of Clubs 4 of Clubs 5 of Clubs 6 of Clubs 7 of Clubs 8 of Clubs 9 of Clubs 10 of Clubs Jack of Clubs Queen of Clubs King of Clubs