JAVA

Define a class variable in each sub class (SavingsAccount and CurrentAccount), which will keep a track of how many objects have been created from that class.

public class SavingAccount extends Account { private double interestRate;

public SavingAccount(int accountNumber, double interestRate) { super(accountNumber); this.interestRate = interestRate; }

public void display() { super.display(); System.out.println("Interest rate: " + interestRate); } }

public class CurrentAccount extends Account { private double overdraftLimit;

public CurrentAccount(int accountNumber, double overdraftLimit) { super(accountNumber); this.overdraftLimit = overdraftLimit; }

public void withdraw(double amount) { if (amount > 0) if ((balance + overdraftLimit) - amount >= 0) balance -= amount; else System.err.println("Account.withdraw(...): " + "cannot withdraw more than your balance."); else System.err.println("Account.withdraw(...): " + "cannot withdraw negative amount."); }

}