Close Lab 2: Create and use a class
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 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
and initial balance.
• The accessor and mutator methods for id, 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.
Draw the UML diagram for the class. Implement the class.
Write a test program that creates an Account object with
an account ID of 1122, a balance of $20,000, and an annual
interest rate of 4.5%. Use the withdraw method to withdraw
$2,500, use the deposit method to deposit $3,000, and
print the balance, the monthly interest, and the date when
this account was created.
Analysis:
(Describe the problem including input and output in your own words.)
Design:
(Draw an UML class diagram for the Account class.)
Coding: (main testing part provided)
public class Test {
public static void main (String[] args) {
Account account = new Account (1122, 20000);
Account.setAnnualInterestRate(4.5);
CS265 Closed Lab 2
account.withdraw(2500);
account.deposit(3000);
System.out.println("Balance is " + account.getBalance());
System.out.println("Monthly interest is " +
account.getMonthlyInterest());
System.out.println("This account was created at " +
account.getDateCreated());
}
}
Class Account {
// Implement the class here
}
Testing: (Describe how you test this program)
Submission:
Follow our class coding standard to complete this lab, check out for credit.
