( The Account class ) Design a class named Account that contains: A private int
ID: 3763832 • Letter: #
Question
(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.
Write a (separate class) 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. I get 5 error messages for line 11 can you tell me what I did wrong?
import java.util.Date;
public class Test {
public static void main(String[] args) {
Account account1 = new Account(1122, 20000, .045);
account.withdraw(2500);
account.deposit(3000);
System.out.println("Date Created:" + java.util.Date dateCreated = new java.util.Date());
System.out.println("Account ID:" + account1.id);
System.out.println("Balance:" + account1.getBalance());
System.out.println("Interest Rate:" + account1.getAnnualInterestRate());
System.out.println("Balance after withdraw of 2500:" + account1.getAnnualInterestRate());
System.out.println("Balance after deposit of 3000:" + account1.getAnnualInterestRate());
System.out.println("Monthly Interest:" + account1.id);
System.out.println("Process completed.");
}
class Account {
private int id;
private double balance;
private double annualInterestRate;
private Date dateCreated;
Account () {
id = 0;
balance = 0.0;
annualInterestRate = 0.0;
}
Account(int newId, double newBalance) {
id = newId;
balance = newBalance;
}
Account(int newId, double newBalance, double newAnnualInterestRate) {
id = newId;
balance = newBalance;
annualInterestRate = newAnnualInterestRate;
}
public int getId() {
return id;
}
public double getBalance() {
return balance;
}
public double getAnnualInterestRate() {
return annualInterestRate;
}
public void setId(int newId) {
id = newId;
}
public void setBalance(double newBalance) {
balance = newBalance;
}
public void setAnnualInterestRate(double newAnnualInterestRate) {
annualInterestRate = newAnnualInterestRate;
}
public void setDateCreated(Date newDateCreated) {
dateCreated = newDateCreated;
}
double getMonthlyInterestRate() {
return annualInterestRate/12;
}
double withdraw(double amount) {
return balance -= amount;
}
double deposit(double amount) {
return balance += amount;
}
}
}
Explanation / Answer
package dessertshop;
import java.util.Date;
class Account {
private int id;
private double balance;
private double annualInterestRate;
private Date dateCreated;
public Account() {
id = 0;
balance = 0.0;
annualInterestRate = 0.0;
}
public Account(int newId, double newBalance) {
id = newId;
balance = newBalance;
}
public Account(int newId, double newBalance, double newAnnualInterestRate) {
id = newId;
balance = newBalance;
annualInterestRate = newAnnualInterestRate;
}
public int getId() {
return id;
}
public double getBalance() {
return balance;
}
public double getAnnualInterestRate() {
return annualInterestRate;
}
public void setId(int newId) {
id = newId;
}
public void setBalance(double newBalance) {
balance = newBalance;
}
public void setAnnualInterestRate(double newAnnualInterestRate) {
annualInterestRate = newAnnualInterestRate;
}
public void setDateCreated(Date newDateCreated) {
dateCreated = newDateCreated;
}
double getMonthlyInterestRate() {
return annualInterestRate / 12;
}
double withdraw(double amount) {
return balance -= amount;
}
double deposit(double amount) {
return balance += amount;
}
}
public class Test {
public static void main(String[] args) {
Account account1 = new Account(1122, 20000, .045);
account1.withdraw(2500);
account1.deposit(3000);
Date dateCreated = new java.util.Date();
System.out.println("Date Created:" + dateCreated);
System.out.println("Account ID:" + account1.getId());
System.out.println("Balance:" + account1.getBalance());
System.out.println("Interest Rate:" + account1.getAnnualInterestRate());
System.out.println("Balance after withdraw of 2500:" + account1.getAnnualInterestRate());
System.out.println("Balance after deposit of 3000:" + account1.getAnnualInterestRate());
System.out.println("Monthly Interest:" + account1.getId());
System.out.println("Process completed.");
}
}
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