Question

I tried to complete a Java application that must include at a minimum:

• Three classes minimum
• At least one class must use inheritance
• At least one class must be abstract
• JavaFX front end – as you will see, JavaFX will allow you to create a GUI user interface.
• The User Interface must respond to events.
• If your application requires a data backend, you can choose to use a database or to use text files.
• Error handling - The application should be able to handle invalid data.

There will be multiple assignments associated with this application including:

• UML – provide documentation that documents your classes using UML.
  • Note: Since the user interface will use JavaFX, these classes should be unrelated to the user interface of your application. These classes should be related to the functionality of your project. For example, let's say your application will require the user to enter information about a person (first name, last name, etc.). You would want to create a class that contains all the fields as well as the setters and getters required for the object (with the setters doing validation as required for the associated field). This class might also contain information about which fields are required for the object to be valid as well as an override of the toString method for the class to output all the fields using the toString method in some predefined format. The JavaFX user interface could then use the object when trying to validate the user or to output the object to a report, etc. What these classes should not contain is anything related to the user interface for the application. That will come in the JavaFX portion of the project.
• Classes / Test Classes – you should have created the classes your application will require at a minimum, in addition to any “test” classes that will instantiate your application classes and verify that these classes work. These “test” classes should output to the console test messages that verify your classes perform correctly.
  • Note: After this assignment is completed, you may find you need some additional classes to complete your project. You may add classes as required to make the app fully functional. However, make sure you get approval for any changes you need to make and remember to update your UML document as you will need to submit this document along with the final project.
• JavaFX - your non-GUI related code should have been completed.as well as JavaFX GUI widgets (controls / windows, etc.). You should be working on finalizing the events and having a minimum of two events completed as well as your complete GUI (i.e. Windows and fields).

Semester Project: Finalize Project - including all requirements as outlined above and approved for this project should have been met.

The following is what I created for the user to place their order by entering their food and drink from my restaurant menu

The Model Classes are Food.java and Drinks.java

The Abstract Class are Price.java

The Controller file are FXMLDocumentController.java and FXML frontend FXML File and FXMLDocument.fxml

The Main File is myRestaurantFX.java

I am having trouble doing the error checking on my code based on the answer from this link: https://www.chegg.com/homework-help/questions-and-answers/need-java-application-gui-includes-following-requirements-three-classes-minimum-least-one--q40207800

Answer 1

JAVA APPLICATION : AIRLINE RESERVATION SYSTEM

LoginPage.java

DomesticFlight.java

InternationalFlight.java

PrintTicket1.java

ExitListener.java

WindowUtilities.java

unable to upload here so, download from this link :

https://drive.google.com/open?id=1gquvK3DNsvcVnTvRIxpJAWiwumIgTV9c