Design MoneyMarketAccount class that inherits the BankAccount classs, set the interest rate to 4% -> 0.04.

Create two MoneyMarket Accounts in TestAccounts class and state them to Bank Account array and display their info. Java

Savingsaccount code

public class SavingsAccount extends BankAccount {

public SavingsAccount()

{

super();

}

public SavingsAccount(int acctNumber, String name, double balance, double interestRate){

super(acctNumber, name, balance, interestRate);

}

public double calcInterest(){

return getBalance() * getInterestRate();

}

}

Bankaccount code

public abstract class BankAccount {

private int acctNumber;

private String name;

private double balance;

private double interestRate;

public BankAccount(){

acctNumber = 0;

name ="";

balance=0.0;

interestRate = 0.0;

}

public BankAccount(int acctNumber, String name, double balance, double interestRate){

this.acctNumber = acctNumber;

this.name =name;

this.balance=balance;

this.interestRate = interestRate;

}

public void setAcctNumber(int acctNumber)

{

this.acctNumber = acctNumber;

}

public int getAcctNumber()

{

return acctNumber;

}

public void setName(String name)

{

this.name = name;

}

public String getName()

{

return name;

}

public void setBalance(double balance)

{

this.balance = balance;

}

public double getBalance()

{

return balance;

}

public void setInterestRate(double interestRate)

{

this.interestRate = interestRate;

}

public double getInterestRate()

{

return interestRate;

}

public abstract double calcInterest();

@Override

public String toString() {

return "Account number : "+ acctNumber + " with account owner " + name + " has a balance of "+ balance + " has interestRate " + interestRate;

}

}

Test Account

import java.util.*;

public class TestAccounts {

public static void main(String[] args){

BankAccount C1 = new CheckingAccount();

C1.setAcctNumber(1002);

C1.setName("Bob Lee");

C1.setBalance(1500.00);

C1.setInterestRate(0);

BankAccount S1 = new SavingsAccount();

S1.setAcctNumber(2005);

S1.setName("Victor Taylor");

S1.setBalance(8000.00);

S1.setInterestRate(0.02);

BankAccount C2 = new CheckingAccount(1001, "John smith", 5000.00, 0.0);

BankAccount S2 = new SavingsAccount(2001, "Mary Smith", 3000.00, 0.01);

BankAccount [] Accounts = {C1, C2, S1, S2};

System.out.println("Checking Account interest :" + C2.calcInterest());

System.out.println("Savings Account interest :" + S2.calcInterest());

for(BankAccount ba: Accounts)

System.out.println(ba.toString());

}

}

Checking account code

public class CheckingAccount extends BankAccount {

public CheckingAccount()

{

super();

}

public CheckingAccount(int acctNumber, String name, double balance, double interestRate){

super(acctNumber, name, balance, interestRate);

}

public double calcInterest(){

return 0;

}

}