public void tryAgain(Displayable form) {
        Alert error = new Alert("Login Incorrect", "Please try again", null, AlertType.ERROR);
        error.setTimeout(900);
        //    error.setImage(imge);

        Form login = (Form) form;
        TextField userName;
        TextField password;
        for (int i = 0; i < login.size(); i++) {
            if (login.get(i) instanceof TextField) {
                TextField textfield = (TextField) login.get(i);
                textfield.setString("");
                /* if (textfield.getLabel().equalsIgnoreCase("")) {
                 }
                 if (textfield.getLabel().equalsIgnoreCase("")) {
                 }*/
            }
        }
        /*  userName = (TextField) login.get(0);
         password = (TextField) login.get(1);

         userName.setString("");
         password.setString("");*/
        display.setCurrent(error, form);
    }