COMP1721辅导 、讲解 java编程语言
COMP1721 Object-Oriented Programming
Coursework 2
1 Introduction
Your task is to implement a simulation of the card game Baccarat—specifically, the simpler ‘punto banco’
variant of the game. To assist you, we have provided three Java classes: Card ,CardCollection and
CardException. These should form the basis of your solution.
Please note: an absolute requirement of this assignment is that you should not alter the definitions of
the Card, CardCollection andCardExceptionclasses in any way.
2 Preparation
1. Start by learning the rules of the game! Consult the Wikipedia page on Baccarat, which has a very
good summary. Note that you only need to read the sections headed ‘Punto banco’ and ‘Tableau
of drawing rules’.
2. Download the Zip archivecwk2files.zip from Minerva.
3. Unzip the Zip archive. You can do this from the command line in Linux, macOS and WSL 2 with
unzip cwk2files.zip. This will give you a subdirectory named cwk2, containing all the files you
need. Then remove the Zip archive, to ensure that you don’t accidentally submit it as your
solution!
4. Study the files in cwk2. In particular, examine the file README.md, as this provides guidance on how
to run the tests on which your mark will be partly based.
3 Basic Solution
For the basic solution, you must implement these classes:
• BaccaratCard, to represent a single playing card in Baccarat
• BaccaratHand, to represent a hand of cards in Baccarat
• Shoe, to represent the ‘shoe’ from which cards are dealt in Baccarat
You will also need to implement a small program in Baccarat.java that uses the classes.
The files for all of these classes can be found in src/main/java. Your solution MUST be implemented
in these files, in this specific location!
Figure 1 shows the relationships that should exist between the three main classes, and the methods they must
support. Relationships with the other provided classes are not shown.
Before writing any code, think carefully about the best way to reuse the Card and CardCollection
classes that we have provided to you.
Figure 1: Classes needed for Baccarat simulation.
As in Coursework 1, we have provided tests that will help you check whether you have implemented the
classes correctly. Some of the code needed to pass the tests is in the classes we have provided, but you will
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need to also write stubs for some of the methods in Figure 1 in order for the tests to compile and run—see
the instructions for Coursework 1 if you need a reminder of how to do this.
As in Coursework 1, the tests are run using Gradle:
./gradlew test
Omit the ./ prefix if running in a Windows command shell, or use .\gradlew.bat to invoke Gradle
if running in Windows Powershell. If using IntelliJ, you should also be able to run the tests and other
coursework-related tasks via that IDE’s Gradle tool window.
The following sections provide further details of the requirements for each of the three classes.
3.1 BaccaratCard
These are the minimum requirements for the tests to pass.
• It should be possible to create a BaccaratCard object by specifying a rank and a suit, where the rank
is an instance of the enum Card.Rank and the suit is an instance of the enum Card.Suit .
• It should be possible to query rank and suit via the getRank() and getSuit() methods.
• Calling toString() on a BaccaratCard object should return a two-character string in which the first
character is the rank (A, 2, 3. . .9, T, J ,Q, K) and the second character is the Unicode symbol for the
card’s suit:♣ (\u2663), q (\u2666), r ( \u2665), or ♠ (\u2660).
• It should be possible to compare BaccaratCard objects in two ways, using the equals() and
compareTo() methods. These methods should have the expected behaviour for Java classes, as
discussed in the lectures. They should use rank and suit to perform their comparisons.
• The value() method of BaccaratCard should return the points value of the card in the game of
Baccarat. (See the Wikipedia article for details of scoring.)
Remember that we have provided a Card class to help you with implementation. Some of the requirements above are satisfied by code in that class. Think about the best way of reusing this code.
3.2 BaccaratHand
These are the minimum requirements for the tests to pass.
• A BaccaratHand should be able to store BaccaratCard objects, but it should start out as empty.
• It should be possible to add a BaccaratCardobject to a BaccaratHand by calling the add() method.
• Calling size() on a BaccaratHand should return the number of cards in the hand.
• Calling toString() on a BaccaratHand should return a string containing two-character representations of each card, separated from each other by a space. For example, a hand containing the Ace of
Clubs, Four of Diamonds and Jack of Spades should yield “A♣4q J♠”.
• The value() method of BaccaratHand should return the points value of a hand in the game of
Baccarat. (See the Wikipedia article for details of scoring.)
• The isNatural() method of BaccaratHand should return true if the hand has two cards and a points
value of 8 or 9, false otherwise.
Remember that we have provided a CardCollection class to help you with implementation. Some of
the requirements listed above are satisfied by code in that class. Think about the best way of reusing
this code.
3.3 Shoe
These are the minimum requirements for the tests to pass.
• Shoe must have a constructor in which the number of decks of cards is specified as a parameter. This
can have values of 6 or 8; any other value should result in a CardException being thrown.
• The constructor of Shoe should ensure that a shoe stores the specified number of complete decks of
BaccaratCard objects. A deck of cards is the full set of 52 cards, ordered first by suit and then by
rank. The constructor should not reorder the cards in any way.
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• Calling size() on a Shoe should return the number of cards in the shoe.
• The shuffle() method of Shoe should reorder the cards in the shoe randomly. Java’s Collections
utility class, from the java.util package, will help you implement this easily. See the documentation
of this class for more details.
• The deal() method of Shoe should remove the first stored card and return it to the caller. Attempting
to deal from an empty shoe should trigger a CardException.
Remember that we have provided aCardCollection class to help you with implementation. Some of
the requirements above are satisfied by code in that class. Think about the best way of reusing this
code.
3.4 Main Program
The final part of the Basic solution is to implement a small program in Baccarat.java that uses the three
classes discussed earlier. This program should
• Create a shoe containing 6 full decks of cards, and shuffle it
• Create hands for the banker and a single player
• Deal a card to player then banker, then repeat this so each hand has two cards
• Display the contents and value of each hand
• Inform the user if the player or banker has a Natural
You can run the program via Gradle, with
./gradlew run
Figure 2 gives an example of the output that the program should generate.
Figure 2: Sample output for the Basic solution.
4 Full Solution
For the Full solution, replace the program in Baccarat.java with a more complete simulation of the game.
Your simulation should follow a simplified version of the ‘punto banco’ rules outlined in the Wikipedia
article. In this version, there is no betting and you should not ‘burn’ any cards from the shoe.
In this more complete simulation, the program will need to play multiple rounds, indicating the result
(Banker win, Player win or Tie) after each round. See the subsections below for further details.
Note: marks for the Full solution will be awarded based on how much of the required behaviour you
are able to implement correctly, and also on how well designed your solution is. A fully object-oriented
implementation in which different aspects of the task are broken out into separate methods will score more
marks than an unstructured implementation where everything is contained within the main method.
4.1 Interactive Mode
If the Baccarat program is run with a single command line argument whose value is either "-i" or
"--interactive" , then it should operate in interactive mode. In this mode, the program should continue
playing the game provided that there are at least six cards remaining in the shoe and the user has indicated
a wish to continue. The program should check this with the user at the end of each round. If the user’s
response does not begin with either 'y' or 'Y' then the game should end.
At the end of the game, the program should display counts of the number of rounds played, the number of
player wins, the number of banker wins and the number of tied rounds. After displaying this information,
the program should terminate.
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A sample of the expected program output can be seen in Figure 3.Here, the user indicated that they wanted
to finished after playing ten rounds.
Figure 3: Sample output for Full solution (interactive mode).
To test interactive mode using Gradle, do
./gradlew interact
4.2 Non-Interactive Mode
If theBaccarat program is run without command line arguments, it should operate without user interaction,
playing rounds of the game repeatedly until there are fewer than 6 cards remaining in the shoe. At this point,
the program should display the same ‘end of game’ statistics as it does in interactive mode. The program
should then terminate.
Non-interactive mode should be the behaviour seen when running the program with
./gradlew run
5 Submission
Use Gradle to generate a Zip archive containing all the files that need to be submitted:
./gradlew submission
This produces a Zip archive named cwk2.zip. Submit this file to Minerva, via the appropriate link in the
‘Submit My Work’ folder.
The deadline for submissions is 2 pm on 2 May 2024. The standard university penalty of 5% of available
marks per day will apply to late work, unless an extension has been arranged due to genuine extenuating
circumstances.
Note that all submissions will be subject to automated plagiarism checking.
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6 Marking
20 Tests for main classes (BaccaratCard ,BaccaratHand ,Shoe )
10 Code structure and style for main classes
5 Basic Baccarat program functionality, if Full solution not attempted
15 Full Baccarat program functionality (replaces Basic)
10 Full Baccarat program structure and style
60
Note: there are either 5 marks or 15 marks available for correct functioning of the program that uses the
classes, depending on whether you’ve attempted the Basic solution or the Full solution.You are also assessed
on program structure and style if you attempt the Full solution, but not if you attempt the Basic solution (as
the amount of code required in this case is very small).
Thus the maximum mark that can be achieved for the Basic solution is 36.You can achieve up to 60 marks
if you attempt the Full solution.
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