CheckingAccount.java

/**
 * CheckingAccount class - demonstrates inheritance and method overriding.
 */
public class CheckingAccount extends BankAccount {
    private double overdraftLimit;

    /**
     * Constructor.
     */
    public CheckingAccount(String accountNumber, String pin, double initialBalance, double overdraftLimit) {
        super(accountNumber, pin, initialBalance, "Checking");
        this.overdraftLimit = overdraftLimit;
    }

    /**
     * Overridden withdraw method to allow overdraft.
     */
    @Override
    public boolean withdraw(double amount) {
        try {
            if (amount <= 0) {
                throw new IllegalArgumentException("Invalid amount");
            }

            // Allow withdrawal up to overdraft limit
            if (amount > getBalance() + overdraftLimit) {
                throw new InsufficientFundsException("Exceeds overdraft limit");
            }

            // If within overdraft, proceed with withdrawal
            return super.withdraw(amount);
        } catch (Exception e) {
            System.err.println(e.getMessage());
            return false;
        }
    }

    /**
     * Getter for overdraft limit.
     */
    public double getOverdraftLimit() {
        return overdraftLimit;
    }
}