public class TollMachine
{
    private int cost;
    private Account_Database acc_db;
    private Keypad keypad;
    private Nota nota;
    private Screen screen;
    private Gate gate;
    public TollMachine()
    {
        cost = 10000;
        acc_db = new Account_Database();
        keypad = new Keypad();
        screen = new Screen();
        gate = new Gate();
    }
    public void run()
    {
        while(true)
        {
            gate.closeGate();
            screen.displayMessageLine("Please enter your Card Number\n");
            int accNum = keypad.getInput();
            if(acc_db.authenticateUser(accNum))
            {
                if(acc_db.getAccountBalance(acc_db.getAccount(accNum)) >= cost)
                {
                    acc_db.tollpay(acc_db.getAccount(accNum), cost);
                    nota = new Nota(acc_db.getAccount(accNum).getBalance(), cost);
                    nota.print();
                    screen.displayMessageLine("Thank you for using our service\nPlease take your card and proof of transaction\n");
                    gate.openGate();
                }
                else
                {
                    screen.displayMessageLine("Insufficient funds\nPlease take your card back\n");
                }
            }
            else
            {
                screen.displayMessageLine("Card Number not found\nPlease take your card back");
            }
        }
    }
}