Start by downloading CS201_Lab09.zip and importing it into Eclipse. You should see a project called CS201_Lab09.
Your Task
Part 1 - Define a Card class
Define two enum types called Suit and Rank. The Suit enumeration should contain values for the suits clubs (lowest suit), diamonds, hearts, and spades (highest suit). The Rank enumeration should contain values for each playing card rank - two (lowest rank) through ten, jack, queen, king, then ace (highest rank).
Note: specify the members of each enumeration in order from lowest to highest. I.e., CLUBS should be the first value in Suit, and TWO should be the first value in Rank. This will make it easy to compare suit and rank values.
Define a class called Card. An instance of Card represents a playing card. It should have fields to store a Card's suit and rank, and a constructor to initialize them. Add getter methods to get a card's suit and rank.
Write JUnit tests to test the card class. You should create a number of Card objects with different suits and ranks, and test that the getter methods work on these objects.
Part 2 - Comparing Cards
Once you have Part 1 working, change the Card class to implement the java.lang.Comparable interface. The Card class's compareTo method should compare first by suit, then by rank. So, a two of diamonds would compare as greater than an ace of clubs, because diamonds is a higher suit than clubs. Of course, three of diamonds would compare as greater than two of diamonds.
You will see a warning about Comparable being a raw type. Ignore this warning for now: we will see how to fix it in the next lab.
Note that enumeration types automatically implement the Comparable interface, so you can call the compareTo method on enumeration members. The comparison result will correspond to the order in which the enumeration members were defined, with earlier members comparing as less than later members.
Add some JUnit tests to test comparing Card objects using the compareTo method.
Part 3 - Sorting Cards
Finally, demonstrate that you if you can compare cards, then an array of cards can be sorted using the java.util.Arrays.sort static method.
As one of the objects in your test fixture, create an array of Card objects. You can use the Card objects you've already created as element values. Make sure that the elements of the array are not already sorted.
Write a test method to sort the array. It should look something like this:
public void testSort() {
Arrays.sort(myArray);
// now verify that the elements of the array are in sorted order
assertEquals(lowestCard, myArray[0]);
assertEquals(secondLowestCard, myArray[1]);
// etc...
}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_Lab09) 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_Lab09) to a zip file by right-clicking it and choosing
Export...→Archive File
Upload the saved zip file to the Marmoset server as lab9. The server URL is
