ASSIGNMENT

Include a main method to the GradeBookEntry class that does the following:

• Creates an array of 10 GradeBookEntry objects, and for each element i in the array, create a new GradeBookEntry object with:

         student field:
           firstName = "first_i"
           lastName = "last_i"
           age = a random age between 18 and 22
           gradYear = 2004
       assignments field:
           an array of 20 grades
           each element in the array = random grade between 50 and 100
  

• For each GradeBookEntry object, print the student's name, the student's max, min, and average grade. Print this as a table. Something like this is fine:

         Student's Name     Max     Min     Ave
         --------------     ---     ---     ---
         first_0 last_0     96      50      69.25
         first_1 last_1     97      51      71.1
         first_2 last_2     99      59      79.75
         .                  .       .       .
         .                  .       .       .
         .                  .       .       .
  

• Print each student's grade on assignment #4
• Print the Student information for the student with the highest grade on assignment #4

Problem 2: Credit Cards
You will write a Java program that allows a user to create a new credit card of one of three types: a regular card, a gold card, or a last-chance card. Next your program will enter a loop that will:

• print a menu of credit card actions
• get the user's menu selection
• perform the action, or print an error message if the user enters invalid input values
• print information about the current status of the credit card account

1. Use credit card
2. Make a payment
3. Quit

Characteristics of each type of credit card:

• A regular credit card has an interest rate of 18%, and an upper limit of $5,000.
• A gold card has an interest rate of 10% and an upper limit of $500,000. In addition, gold card subscribers can earn frequent flyer miles for every dollar they spend (spend 1 dollar earn 1 frequent flyer mile).
• A last chance card is for people with a bad credit history. The interest rate is 25% and there is a $1,000 charge limit. A last chance card holder can get better rates by paying off their complete balance three times in a row; if a holder of a LastChance card makes complete payments three payments in a row, their interest rate drops to 20% and their limit increases to $1,500.

Implementation Details and Requirements

Once you have added these changes to the CreditCard class and you have tested that they work correctly, do the following:

1. Create a GoldCard class that is a subclass of CreditCard. The status information of a GoldCard should include the number of frequent flyer miles accumulated so far.
2. Create a LastChanceCard class that is a subclass of CreditCard. Override the makePayment method to check if three full payments have been made in a row, and if so modify the interest rate and limit accordingly.

• You should create a RunCreditCard class containing a main method that implements the main loop of your program. Use good modular design when writing this class; all the code should not be in the main method. Instead, break the program into well-defined subtasks and utilities, and implement each as as a private method called by the main method.
• You must define and use an exception class NonPositiveValueException that will be thrown by all methods that have dollar amount parameters. The method will throw this exception when it is passed a non-positive dollar amount. Code in RunCreditCard.java (the main program) should catch and handle this exception in a reasonable way. Terminating the program is not a reasonable way to handle this exception.
• After each transaction (menu option selected and handled) print the new balance, the interest rate, and the credit limit.
• You must write and use a makefile for compiling Problem#2 .java files. Hand in your makefile along with all your program .java files. An example Java makefile is available off the cs35 homepage.

To implement some of the functionality in the GoldCard and LastChanceCard classes, you may need to add (or change) methods in the CreditCard class as well as add data members to this class.

Do not worry about formating floating point values for this assignment. However, if you would like to play around with number formating, take a look at the API documentation for the DecimalFormat and NumberFormat classes. Here is an example of how you could format dollar amounts to print the retail price of an Auto object from your last homework assignment:

        NumberFormat mf = NumberFormat.getCurrencyInstance(Locale.US);
        String priceOutput = mf.format(this.retailPrice());
        System.out.println(" retail price is " + priceOutput );

Classes

You should use the following classes as starting points for your programs:

HAND IN