CSE1030Z Lab 04

Introduction

The purpose of this lab is to implement an immutable class that uses static and non-static features.

There is one question in this lab, which should be submitted by the end of the lab session.

Question 1: Implement a Playing Card class

Implement a class that represents an immutable playing card from a standard 52 card deck. A playing card is identified by its suit (clubs, diamond, heart, spade) and its rank (two through ten, jack, queen, king, and ace). Both the suit and rank are represented with strings.

Your class must provide the API shown here.

Please start with the skeleton code shown below:

package cse1030;

/**
 * An immutable class representing a playing card from a standard 52 card deck.
 * A playing card is identified by its suit (clubs, diamond, heart, spade) and
 * its rank (two through ten, jack, queen, king, and ace). Both the suit and
 * rank are represented with strings.
 * 
 * 
 * @author 
 * 
 */
public final class PlayingCard implements Comparable<PlayingCard> {

  private static final String[] RANKS = { "2", "3", "4", "5", "6", "7", "8",
      "9", "10", "J", "Q", "K", "A" };
  private static final String[] SUITS = { "S", "C", "D", "H" };

  private final String rank;
  private final String suit;
  
  

  public static void main(String[] args) {
    // generate a standard 52 card deck
    Set<String> ranks = PlayingCard.getAllRanks();
    Set<String> suits = PlayingCard.getAllSuits();
    for (String r : ranks) {
      for (String s : suits) {
        PlayingCard card = new PlayingCard(r, s);
        System.out.println(card);
      }
    }
  }
}

Notice that PlayingCard has two static attributes that are arrays that hold the valid ranks and suits sorted in ascending order. The arrays are static because there is no need for every card to store a copy of the arrays. The class also has two static methods that you must implement.

• the constructor must validate its string arguments to ensure that the client is passing in a valid rank and suit
• Eclipse generated hashCode and equals are acceptable
• consider using the utility class java.util.Arrays and its method asList in the constructor, compareTo, getAllRanks, and getAllSuits
• read the API for PlayingCard.compareTo carefully and make sure that your implementation satisfies the API contract
• you may omit the Javadoc comments for this lab

A JUnit tester is available here.

Submit your class using the following command:

submit 1030Z L4W PlayingCard.java