[SOLVED] CSE110 Assignment #4

Topics

• Object Oriented Programming (Chapter 8) o Encapsulation

o Implementingclasses o Implementingmethods o Object construction
o Constructors

Use the following Guidelines:

CSE 110 – Assignment #4

•   Give identifiers semantic meaning and make them easy to read (examples numStudents, grossPay, etc).
•   Keep identifiers to a reasonably short length.
•   User upper case for constants. Use title case (first letter is upper case) for classes. Use lower

  case with uppercase word separators for all other identifiers (variables, methods, objects).

•   Use tabs or spaces to indent code within blocks (code surrounded by braces). This includes

  classes, methods, and code associated with ifs, switches and loops. Be consistent with the

  number of spaces or tabs that you use to indent.

•   Use white space to make your program more readable.

  Important Note:

  All submitted assignments must begin with the descriptive comment block. To avoid losing trivial points, make sure this comment header is included in every assignment you submit, and that it is updated accordingly from assignment to assignment. (If not, -1 Pt)

  //*********************************************************** // Name: your name
  // Title: title of the source file
  // Description: Write the description in your words.

  // Date: the date you programmed //**********************************************************

  Your programming assignments require individual work and effort to be of any benefit. Every student must work independently on his or her assignments. This means that every student must ensure that neither a soft copy nor a hard copy of their work gets into the hands of another student.

Maximum points: 20 pts

Sharing your assignments with others in any way is NOT permitted. Violations of the University Academic Integrity policy will not be ignored. The university academic integrity policy is found at https://engineering.asu.edu/integrity/

Part 1: Test Program Development (5 pts)

Step 1 (2 Pts): Write a Java program called Assignment4.java, which reads the user input command and display a comment corresponding to the command.

•   Command A: Display ” *** Make A new FiveCards *** “
•   Command B: Display ” *** Change One Card ***”
•   Command C: Display ” *** Display Data ***”
•   Command Q: Display ” *** End of Program *** “, and quit the program
•   Others : Display ” *** Invalid command. Try Again *** ”

  The following is the CommandTemplate.java used in the previous project. Start from modifying this code if you have no idea what to do.

Step 2 (3 Pts): Go to the Part2 and develop FiveCards.java in the same directory of Assignment4.java. Once the Part2 is finished, modify each command block in Assignment4.java as:

 The top level: Delete the num0 and num1 if you have them, and add the statement at the line after Scanner initialization.

           FiveCards myCards = new FiveCards();

•   Command A: After displaying the message, add the statements: System.out.println(“Type five letters without space”); String str = in.nextLine();
  myCards.setCard(str);
  myCards.calculateScore(); System.out.println(myCards.displayData());
•   Command B: After displaying the message, add the statements: System.out.println(“Type one position to change”);
  int pos = in.nextInt();
  String lineBreak = in.nextLine(); //to skip the line break myCards.changeOne(pos);
  myCards.calculateScore(); System.out.println(myCards.displayData());
•   Command C: After displaying the message, add the statement: System.out.println(myCards.displayData());

  Part 2: Programming (15 pts)

  This assignment is to write a class definition (not a program, no main method) named FiveCards (saved in a file FiveCards.java). The class has the following instance variables:

  private String cards private int score private int changes private String history

•   The cards is a string data of five characters among “1234567890JQK”. No space between the five letters.
•   The score is 0 for no pair, 1 for one pair, 2 for two pairs, 3 for three cards, and 4 for full-house (one pair and three cards).
•   The changes is a counter to keep the number of calling change functions.
•   The history is a string data to keep all history of five cards such as following lines.

            cards     score     0 \n
            cards     score     1 \n
            ...
  

  The FiveCards class must include the following constructor and methods: (If your class does not contain any of the following methods, points will be deducted).

Sample Score and Change

Tips:

From this assignment, it will be asked to submit multiple files. One of them does not compile, ZERO (0) point may be given. To avoid this tragedy and get some partial points, make two files that compile successfully first even though it is not completed.
Start from DUMMY methods. The following are the examples of Dummy method. For the void type method, keep the body empty. For the return-type method, add one statement to return dummy data of required data type. There is no error, so it compile successfully. In this assignment, make 5 dummy methods first. If the FiveCards has only dummies, you are guaranteed to get 5 points of Part#1, if it does compile.
Then start to complete the method one by one and test one by one. Do not implement all methods at the same time. It will be nightmare to fix many items together.

     void XXX(int x) {      }
     String YYY(int x, int y){return "test";}

Note:

•   Make only one System.in. If your program does not run correctly because of this issue, you lose the points (-3Pts).
•   Use only the Java statements that have been covered in class to date. DO NOT use any other items out of the Chapter 1- 5, and 8 (Array, Array List, exit() etc are not allowed to use). If in doubt, ask the instructor or TA. If you use them, then you lose the points of task. (-3Pts).

  Example Executions:

  The following are example inputs and outputs. The user inputs are shown in red, which will not be displayed when you submitted online. The result may be different from this because the program generates random letters.
  Program Input (1)

© Yoshihiro Kobayashi <[email protected]>