Deposit

public class Deposit extends Transaction
{
    private double amount;
    private Keypad keypad;
    private DepositSlot depositSlot;
    private final static int CANCELED = 0;

    public Deposit(int userAccountNumber, Screen atmScreen, BankDatabase atmBankDatabase, Keypad atmKeypad, DepositSlot atmDepositSlot)
    {
        super(userAccountNumber, atmScreen, atmBankDatabase);

        keypad = atmKeypad;
        depositSlot = atmDepositSlot;
    }

    @Override
    public void execute()
    {
        BankDatabase bankDatabase = getBankDatabase();
        Screen screen = getScreen();
        amount = promptForDepositAmount();

        if(amount != CANCELED)
        {
            screen.displayMessage("\nPlease insert a deposit envelope.");
            screen.displayDollarAmount(amount);
            screen.displayMessageLine(".");
            boolean envelopeReceived = depositSlot.isEnvelopeReceived();

            if(envelopeReceived)
            {
                screen.displayMessageLine("\nYour envelope has been " + "received.\nNOTE: The money just deposited will not " +
                "be available until we verify the amount of any " + "enclosed cash and your checks clear.");
                bankDatabase.credit(getAccountNumber(), amount);
            }
            else screen.displayMessageLine("\nYou did not insert an " + "envelope, so the transaction has been canceled.");
        }
        else screen.displayMessageLine("Cancelling transaction ... ");
    }

    private double promptForDepositAmount()
    {
        Screen screen = getScreen();

        screen.displayMessage("Please enter a deposit amount in " + "cents. (or 0 to cancel)");
        int input = keypad.getInput();

        if(input == CANCELED)
            return CANCELED;
        else
            return (double) input / 100;

        }
}