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Project | Computer Science homework help


Design an abstract class named BankAccount to hold the following data for a bank account:

· Balance

· Number of deposits this month

· Number of withdrawals

· Annual interest rate

· Monthly service charges

The class should have the following methods:

Constructor:   The constructor should accept arguments for the balance and annual interest rate

deposit:       A method that accepts an argument for the amount of deposit. The method should add the argument to the account balance. It should also increment the variable holding the number of deposits.

withdraw:     A method that accepts an argument for the amount of the withdrawal. The method should subtract the argument from the balance. It should also increment the variable holding the number of withdrawals.

calcInterest:        A method that updates the balance by calculating the monthly interest earned by the account, and adding this interest to the balance. This is performed by the following formulas:

· Monthly Interest Rate = (Annual Interest Rate/12)

· Monthly Interest = Balance * Monthly Interest Rate

· Balance = Balance + Monthly Interest

monthlyProcess:    A method that subtracts the monthly service charges from the balance, calls the calcInterest method, and then sets the variable that hold the number of withdrawals, number of deposits and monthly service charge to zero.

Next, design a SavingAccount class that is a subclass of the BankAccount class.  The SavingAccount class should have a status field to represent an active or inactive account. If the balance of a savings account falls below$25, it becomes inactive. (The status field could be a Boolean variable.) No more withdrawals can be made until the balance is raised above $25, at which time the account becomes active again. The  savings account class should have the following methods:

withdraw:     A method that determines whether the account is inactive before a withdrawal is made. No withdrawal will be allowed if the account is not active. A withdrawal is then made by calling the super-class version of the method.

deposit:       A method that determines whether the account is inactive before a deposit is made. If the account is inactive and the deposit brings the balance above $25, the account becomes active again. The deposit is then made by calling the super-class version of the method.

monthlyProcess:    Before the super-class method is called, this method checks the number of withdrawals. If the number of withdrawals for the month is more than 4, a service charge of $1 for each withdrawal above 4 is added to the super-class fields that holds the monthly service charges. (Don’t forget the check the account balance after the service charge is taken. If the balance falls below $25, the account becomes inactive.)

Now write driver class to demo/test your code of the BankAccount and SavingAccount. Display the result via the standard output screen and file output as well.

The last part is to design and create a Graphical User Interface (GUI) using JavaFX to test those method/behaviors of the BankAccount, SavingAccount classes.

Also, you need to write a reflection report about your learning experience in this class as well as working on this final project. The written part should be 2 pages or more.

Grading scale: 75% for implementing the 3 java files that represent 3 classes: BankAccount class, SavingAccount class and the Driver class.

25% for implementing the Graphical User Interface using JavaFX.

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