Create a Default JavaFX8 Application


To create tje JavaFX Examples I am going to use Netbeans 8 with Java 8.

Create a JavaFX Project

  • Open NetBeans
  • File -> New Project -> JavaFX -> JavaFX Application
  • Project Name: JavaFX8Examples
  • JavaFX Platform: JDK 1.8 (Default)

This will create and open the file javafx8examples.JavaFX8Examples.java

JavaFX8Examples

package javafx8examples;

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

/**
 *
 * @author johndunning
 */
public class JavaFX8Examples extends Application
{

    @Override
    public void start(Stage primaryStage)
    {
        Button btn = new Button();
        btn.setText("Say 'Hello World'");
        btn.setOnAction(new EventHandler<ActionEvent>()
        {

            @Override
            public void handle(ActionEvent event)
            {
                System.out.println("Hello World!");
            }
        });

        StackPane root = new StackPane();
        root.getChildren().add(btn);

        Scene scene = new Scene(root, 300, 250);

        primaryStage.setTitle("Hello World!");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args)
    {
        launch(args);
    }

}

Run the Application

To run the code either click Run Project or right click the file and select Run file

Your application will open a simple Frame as per below:

001-javafx

Click on the Say ‘Hello World’ button and “Hello World” will be displayed in the Netbeans Output Window.

 Summary

The salient parts of our code are as follows:

  • JavaFX8Examples extends Application
  • public static void main(String[] args), calls Application.launch()
  • Application.launch() calls public void start(Stage primaryStage)
  • The application uses a Stage
  • A Sene is set on the stage which is initialised with a Stackpane
  • All other Components (Nodes) such as Buttons, are added as children of the Stackpane
  • The Stage is displayed.

 Source Code

The source code for this project can be found on GitHub at https://github.com/johndunning/JavaFX8Examples

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