Programming Goal Write an abstract class called BankAccount, then write a class

Question

Programming Goal Write an abstract class called BankAccount, then write a class called SavingsAccount that extends BankAccount. Abstract BankAccount Class This class should hold the following data for a bank account: Balance Number of deposits this month Number of withdrawals Annual interest rate Monthly service charges This class should have the following methods: Constructor The constructor should accept arguments for the balance and annual interest rate. Deposit A method that accepts an argument for the amount of the deposit. The method should add the argument to the account balance. It should also increment the variable holding the number of deposits. Withdraw A method that accepts an argument for the amount of the withdrawal. The method should subtract the argument from the balance. It should also increment the variable holding the number of withdrawals. Calclnterest A method that updates the balance by calculating the monthly interest earned by the account, and adding this interest to the balance. This is performed by the following formulas: Monthly Interest Rate = Annual Interest Rate/12 Monthly Interest = Balance * Monthly Interest Rate Balance = Balance + Monthly Interest monthlyProcess A method that subtracts the monthly service charges from the balance, calls the calclnterest method, and then sets the variables that hold the number of withdrawals, number of deposits, and monthly charges to zero. SavingsAccount Class This class should extend the BankAccount class. The SavingsAccount class should have a status field to represent an active or inactive account. If the balance of a savings account falls below $25, it becomes inactive. (The status field could be a boolean variable.) No more withdrawals may be made until the balance is raised above $25, at which time the account becomes active again. The SavingsAccount class should have the following methods: Constructor The constructor should accept arguments for the balance and annual interest rate; it should pass those values as arguments to the superclass's constructor. Withdraw A method that determines whether the account is inactive before a withdrawal is made. (No withdrawal will be allowed if the account is not active.) A withdrawal is then made by calling the superclass version of the method. deposit A method that determines whether the account is inactive before a deposit is made. If the account is inactive and the deposit brings the balance above S25, the account becomes active again. A deposit is then made by calling the superclass version of the method. monthlyProcess Before the superclass method is called, this method checks the number of withdrawals. If the number of withdrawals for the month is more than 4, a service charge of $1 for each withdrawal above 4 is added to the superclass field that holds the monthly service charges. (Don't forget to check the account balance after the service charge is taken. If the balance falls below S25, the account becomes inactive.)

Explanation / Answer

mport java.util.Scanner;

public class BankAccount
{
public static void main(String[] args){
System.out.println("Welcome to the bank! What do you want to do?");

}
public double balance = 0.0;
public int deposits = 0;
public double withDrawals = 0;
public double annualInterestRate = 0;
public double serviceCharge = 1;



// The constructor to hold balance and Annual Interest Rate
public double accountBalance(double bal, double intRate)
{
balance = bal;
annualInterestRate = intRate;
return balance;
}

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

}
public void withDrawal(double amount)
{
balance -= amount;
withDrawals++;
}

private void calcInterest()
{
double monthlyInterestRate;
double monthlyInterest;

monthlyInterestRate = (annualInterestRate / 12);
monthlyInterest = balance * monthlyInterestRate;
balance = balance + monthlyInterest;
}

protected void monthlyProcess()
{
balance -= serviceCharge;
calcInterest();
withDrawals = 0;
deposits = 0;
serviceCharge = 0;
}

public double getBalance()
{
return balance;
}

}

And then the SavingAccount
public class SavingsAccount extends BankAccount
{


public SavingsAccount(double balance, double annualInterestRate)
{
super();

}

public void withDrawal(double amount)
{
if(balance >= 25)
super.withDrawal(amount);
else
System.out.println("Your account is inactive. Your balance needs to be over $25." );
}

public void deposit(double amount)
{
if(balance >= 25)
super.deposit(amount);
else
System.out.println("Your account is inactive. Your balance needs to be over $25." );
}

protected void monthlyProcess()
{
if(withDrawals > 4)
serviceCharge++;
else;
}
}

It can also be written as the following one:

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