public class SavingAccount extends BankAccount 
{
	
    private static final double INTEREST_RATE = 0.05;
    private int accountNumber = 20000;
    private static int accInc = 0;
    
    
    public SavingAccount()
    {
        super();
        accountNumber += accInc++;
    }
    
    public SavingAccount(Customer c, double balance)
    {
        super(c, balance);
        accountNumber += accInc++;
    }
    
    public void withdraw(double amount) 
    {
        deposit(-1 * amount);
    }
    
    public void deposit(double amount) 
    {
        super.deposit(amount);
        super.deposit(INTEREST_RATE * getBalance());
    }
    
    public String toString() 
    {
        return "Saving Account #" + accountNumber + " with balance $" + getBalance();
    }
    
    public int getAccountNumber() 
    {
        return accountNumber;
    }
}