Assignment $3$

Problem Description:

$($The Account class$)$ Design a class named Account that contains:

$$ A private int data field named id for the account $($default $0).$

$$ A private string data filed named first name for customer first name.

$$ A private string data filed named last name for customer last name.

$$ A private double data field named balance for the account $($default $0).$

$$ A private double data field named annualInterestRate that stores the

current interest rate $($default $0).$ Assume all accounts have the same

interest rate.

$$ A private Date data field named dateCreated that stores the date when

the account was created.

$$ A no$-$arg constructor that creates a default account.

$$ A constructor that creates an account with the specified id$,$ first

name, last name and initial balance.

$$ The accessor and mutator methods for id$,$ name, balance, and

annualInterestRate.

$$ The accessor method for dateCreated.

$$ A method named getMonthlyInterestRate$()$ that returns the monthly

interest rate.

$$ A method named withdraw that withdraws a specified amount from the

account.

$$ A method named deposit that deposits a specified amount to the

account.

$$ You should not be able to instantiate object of type Account. Create

two subclasses for checking and saving accounts. A checking account

has an overdraft limit$,$ but a savings account cannot be overdrawn.

Savings account has transaction fee applied for each transaction

$($withdraw $/$ deposit$).$

$$ ToString method should be used to display account info

ToString method should display all account info including overdraft

limit and transaction fee.

Draw the UML diagram for the classes. Implement the classes. Write a test

program that creates a Checking and Savings Accounts objects with an

account ID of $1122$ & $1123,$ a balance of $$20,000$ & $100,000,$ and an annual

interest rate of $4\mathrm{.}5\%.$ Use the withdraw method to withdraw $$2,500,$ use the

deposit method to deposit $$3,000,$ and print the balance, the monthly

interest, account type and the date when this account was created.

Test edge cases.

Design:

$($Draw an UML class diagram for the Account class.$)$