CSC170 Assignment 3      Due: Friday 17 October 2003

A bank maintains the accounts for a number of customers.  The data describing 
each account consists of account number, customer's name and current balance. 

Write a class to implement a bank account.  The constructor should accept as 
parameters the account number and name.  Methods should be provided to deposit 
money, withdraw money and get the current balance.  

Using inheritance, write classes to implement both a checking account and a 
savings account.  The checking account can be overdrawn,  but the savings 
account cannot.  The savings account has an additional method to compute 
interest and add it to the balance.

Lastly, write a driver class which creates an applet as an interface for your 
Bank.  There should be text fields to input name and account number.  There 
should be buttons to choose opening an account, depositing or withdrawing.  
There should be another text field for deposit or withdrawal amount.  

Email your source code plus a short report describing your applet, the 
classes and methods you used and what you liked the best about it to 
your instructor by the due date. You can, as before, turn in your UML 
diagram when you come to class.