Java Program Design a class named Account that contains A pr

Java Program:

Design a class named Account that contains: A private int data field named id for the account (default theta). A private double data field named balance for the account (default theta). A private double data field named annualInterestRate that stores the current interest rate (default theta). 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 getMonthlyInterest() that returns the monthly interest. 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 and then 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.

Solution

Ans: The code required is below and explained with comments.

public class Test {

public static void main (String[] args) {

Account account = new Account(1122, 20000); //account id, balance

Account.setAnnualInterestRate(4.5);

account.withdraw(2500); //withdraw

account.deposit(3000); //deposit

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()); //date of account creation

}

}

class Account {

private int id;

private double balance;

private static double annualInterestRate;

private java.util.Date dateCreated;

public Account() {

dateCreated = new java.util.Date();

}

public Account(int newId, double newBalance) {

id = newId;

balance = newBalance;

dateCreated = new java.util.Date();

}

public int getId() {

return this.id;

}

public double getBalance() {

return balance; // method for getting balance

}

public static double getAnnualInterestRate() {

return annualInterestRate; //for annualinterest rate

}

public void setId(int newId) {

id = newId; // cust id

}

public void setBalance(double newBalance) {

balance = newBalance;

}

public static void setAnnualInterestRate(double newAnnualInterestRate) {

annualInterestRate = newAnnualInterestRate;

}

public double getMonthlyInterest() {

return balance * (annualInterestRate / 1200);

}

public java.util.Date getDateCreated() {

return dateCreated;

}

public void withdraw(double amount) {

balance -= amount;

}

public void deposit(double amount) {

balance += amount;

}

}