a) Design a class named BankAccount and its subclasses named SavingsAccount and CheckingAccount.

Some fields of a BankAccount are account number and current balance. Withdrawals and deposits can be made to any BankAccount.

A SavingsAccount also has a field that stores interest rate. A SavingsAccount has the ability to increase the accounts balance by paying the monthly interest (which is based on the current balance and interest rate).

A CheckingAccount also has fields that store monthly fees and the minimum balance (which should be enforced when money is withdrawn from the account).

Keep in mind:

Use appropriate access specifiers for data members and methods of each class.

Provide accessor and mutator methods as you deem necessary.

Each class should have at least one constructor that receives arguments. The constructor of a subclass should directly initialize the base classs variables.

Each class should have its own toString and equals methods.

If a subclass has a more specific way of implementing functionality that is in the seperclass, it should override the method.

b) Create a driver program with an array of BankAccounts and populate it with both types of BankAccounts. Write a loop to go through the array of BankAccounts and print the state of each object (using the appropriate toString method).

c) Write code to go through the array of BankAccounts. It should calculate the total amount of money currently in the CheckingAccounts in the array of BankAccounts (and ignore the money in the SavingsAccounts in the array).

This question is for java programming.