Question

please answer each next to its question

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: (Copy and Paste Source Code here. Format your code using Courier 10pts)

public class Test {
public static void main (String[] args) {
Account account = new Account(1122, 20000);
Account.setAnnualInterestRate(4.5);
  
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)

Answer 1

import java.time.Instant;
import java.util.Date;

public class Test {
    public static void main (String[] args) {
        Account account = new Account(1122, 20000);
        Account.setAnnualInterestRate(4.5);

        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 {
    private int id = 0;
    private double balance = 0;
    private static double annualInterestRate = 0;
    private Date dateCreated = Date.from(Instant.now());

    public Account() {}

    public Account(int id, int balance) {
        this.setId(id);
        this.setBalance(balance);
    }


    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public double getBalance() {
        return balance;
    }

    public void setBalance(double balance) {
        this.balance = balance;
    }

    public double getAnnualInterestRate() {
        return Account.annualInterestRate;
    }

    public static void setAnnualInterestRate(double annualInterestRate) {
        Account.annualInterestRate = annualInterestRate;
    }

    public Date getDateCreated() {
        return dateCreated;
    }

    public double getMonthlyInterest() {
        return (balance * getAnnualInterestRate()) / 12;
    }

    public void withdraw(double amount) {
        balance -= amount;
    }

    public void deposit(double amount) {
        balance += amount;
    }
}