CSC 211 Spring, 2003

Assignment 3

Modifying a class

Due: 11:59pm, Monday, April 21^st

Purpose: This assignment asks you to modify the BankAccount class presented in class and to write a program to test objects of that class. 

Procedure (Modifying the BankAccount class)

1. Create a folder called Assignment3 in your Java Projects folder.
2. Download the definition of the BankAccount class from the the file BankAccount.java and place into the Assignment3 folder.
3. Start up BlueJ and select the Open Non BlueJ... option from the Project menu.  Select the Assignment3 folder.
4. Double-click on the BankAccount icon to edit it.
5. Modify the definition of the BankAccount class by:
   • Adding a method called getAccountNumber to return the account number (this will be similar to the getBalance method);
   • Adding a method called assessFee that takes as a parameter an amount to subtract from the balance and then subtracts that from the balance;
6. Compile this class and try out the methods by creating an object and right-clicking on its icon (as was done in class).

Procedure (Writing a program to test the new class definition)

1. In the BlueJ main window, click the New Class button.  Name the class TestBankAccount. 
2. Using the TestBankAccount.java file presented in class as a model, write a program that:
   
   • Creates a BankAccount object (using the new operator);
   • Prompts for an amount to deposit;
   • Deposits that amount;
   • Prints the balance;
   • Prompts for an amount to withdraw;
   • Withdraws that amount;
   • Prints the balance;
   • Prompts for an amount of a fee to assess;
   • Assesses that fee;
   • Prints the balance.
3. Proceed to compile and run your program.

What to submit: Through COL, submit a zip file containing both the BankAccount.java file and the TestBankAccount.java file.