−

Provide a clear problem statement and solution. 

−

Use Object-oriented design principles to model the entities in the solution.

−

You should strive for clean and concise code that is easy to understand and modify.

−

Implement the project using Java (no other languages)

−

Use appropriate data structures (e.g., arrays, ArrayList, LinkedList, Set, or Map) to store and manipulate data.

−

Involve the creation of at least 3 classes that interact with each other. 

−

Design a test program to test your classes and designs. The test program should have a list including all objects of classes you have defined in this project. You should create objects in this program by calling different constructors and prompting the user to enter values. Use a loop to display all the objects of different classes and output their information (values of the data fields). 

−

Draw a UML class diagram with the classes and from an implementation perspective. That is, this diagram contains the details of its respective implementation level [2-4] using one of the online free UML diagram tools [6-8]

−

Implement a user inference that can be console-based or a graphical user interface. One example JavaFX GUI application is provided for your reference.

−

30 points for the workable classes and functions without any syntax or runtime errors.

−

15 points for appropriate comments and screenshots of GUI outputs of the programs.

−

15 points for providing UML diagram showing the dependencies between the defined classes by referring to the examples at [2-4]

−

5 points for defining default constructors and constructors with multiple parameters to initialize data fields properly.

−

5 points for using the keywords super, extends, implements, this properly, reading and writing data from/to files correctly.

−

5 points for calling superclass’s constructors and methods.

−

5 points for overriding the superclass’s methods.

−

5 points for using of abstraction (class(s)) and encapsulation (method(s))

−

5 points for using inheritance (that “is a” relationship) and composition (that “has a” relationship)

−

5 points for using dynamic binding and proper data structures (arrays and Java collections (like ArrayList, LinkedList, Set, or Map))

−

5 points for code testing and design validation

/**Example JAVAFX GUI Application

*        This code creates a GUI that allows the user to enter their name and age, and then displays their age in months when they click the "Submit" button. The GUI uses a GridPane layout to display the labels and text fields, and a HBox to hold the button. When the button is clicked, the input values are retrieved from the text fields, the age is converted to months, and a message is printed to the console.

*        */

package com.example.examplegui;

import javafx.application.Application; import javafx.fxml.FXMLLoader; import javafx.geometry.Insets; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.control.Label; import javafx.scene.control.TextField; import javafx.scene.layout.GridPane; import javafx.scene.layout.HBox; import javafx.scene.layout.StackPane; import javafx.stage.Stage; import java.io.IOException;  

public class HelloApplication extends Application {

    @Override

    public void start(Stage stage) throws IOException {

        //FXMLLoader fxmlLoader = new

FXMLLoader(HelloApplication.class.getResource("hello-view.fxml"));

        //Scene scene = new Scene(fxmlLoader.load(), 320, 240);

        // Create labels and text fields for user input

        Label nameLabel = new Label("Name:");

        TextField nameField = new TextField();

        Label ageLabel = new Label("Age:");

        TextField ageField = new TextField(); 

        // Create a button to process the data

        Button btn = new Button();         btn.setText("Submit");         btn.setOnAction(event -> {

            // Get the input values and process them             String name = nameField.getText();

            int age = Integer.parseInt(ageField.getText());

            int ageInMonths = age * 12;

            System.out.println("Hello " + name + "! You are " + ageInMonths + " months old.");

        });

        // Create a horizontal box to hold the button         HBox hbox = new HBox(btn);         hbox.setPadding(new Insets(10));

        // Create a grid pane to hold the labels and text fields

        GridPane grid = new GridPane();         grid.setHgap(10);         grid.setVgap(10);

        grid.setPadding(new Insets(10));         grid.add(nameLabel, 0, 0);         grid.add(nameField, 1, 0);         grid.add(ageLabel, 0, 1);         grid.add(ageField, 1, 1);         grid.add(hbox, 1, 2);

        // Create a Scene and set the GridPane as its root         Scene scene = new Scene(grid, 300, 150);

        stage.setTitle("Hello!");         stage.setScene(scene);         stage.show();

    } 

    public static void main(String[] args) {         launch();

    }

}