Getting Started
This lab will use your code from Lab 9 as a starting point.
Download CS201_Lab10.zip and import it into your Eclipse workspace (File→Import→General→Existing projects into workspace→Archive file.) You should see a project called CS201_Lab10 in the Package Explorer.
Right click on StartLab.java and choose Run As→Java Application. In the console window, type yes when prompted. When the program completes, right click on the project (CS201_Lab10) and choose Refresh. You should see your code from Lab 9.
Your Task
(1) Modify your Card class so that rather than implementing the Comparable interface, it implements Comparable<Card>: instead of
public class Card implements Comparable {use
public class Card implements Comparable<Card> {Change the type of the compareTo method’s parameter from Object to Card. You can now take out the type cast you used to convert the Object reference into a Card reference.
Run your JUnit tests again to make sure everything still works correctly.
(2) Add an equals method to the Card class. Add JUnit tests to CardTest to make sure it works properly.
(3) Implement the Deck class. It should look like this:
public class Deck {
// fields
public Deck() {
// generate a full deck (52 cards)
}
public int getNumCards() {
// return number of cards in the deck
}
public Card getCard(int i) {
// return the i'th card in the deck
}
public Card drawCard() {
// draw a Card from the top of the deck
// and return a reference to it
}
public void shuffle() {
// randomly shuffle the deck
// use the Collections.shuffle() static method!
}
}Use an ArrayList<Card> (ArrayList of Cards) to store the cards.
The get method could use the get method of ArrayList<Card>.
The drawCard method could use the remove(int) method of ArrayList<Card>. (Use it to remove the last card in the list of cards, and return a reference to the removed card.)
Add a JUnit test class called DeckTest. It should contain tests for the getNumCards, drawCard, and Shuffle methods of the Deck class.
Hints
You can iterate through all of the elements of an enumeration by calling the enumeration’s values static method, which returns an array. For example, this code snippet should be useful in the Deck constructor:
Suit[] allSuits = Suit.values();
Rank[] allRanks = Rank.values();
for (int j = 0; j < allSuits.length; j++) {
for (int i = 0; i < allRanks.length; i++) {
// use allSuits[j] and allRanks[i] to create a Card
}
}You can implement the Deck class’s shuffle method by calling Collections.shuffle, passing the collection containing the Deck object’s Cards as a parameter. In your JUnit test for shuffle, verify that at least some of the cards in the deck changed position.
Submitting
When you are done, submit the lab to the Marmoset server using either of the methods below.
From Eclipse
If you have the Simple Marmoset Uploader Plugin installed, select the project (CS201_Lab10) in the package explorer and then press the blue up arrow button in the toolbar. Enter your Marmoset username and password when prompted.
From a web browser
Save the project (CS201_Lab10) to a zip file by right-clicking it and choosing
Export…→Archive File
Upload the saved zip file to the Marmoset server as lab10. The server URL is
