public class CheckingAccount extends Account {
	
	
	protected double overdraftLimit;


	public void withdraw(double amount) {
		double finalBalance = balance - amount;
		if (finalBalance < 0) {
			if (-finalBalance <= overdraftLimit) {
				balance = finalBalance;
			} else {
				// throw exception
			}
		} else {
			balance =  finalBalance;
		}
	}
}