Created attachment 144924 [details]
Screenshot of the dialog Browse JavaFX Application Classes, my main class that is not reconigzed by NetBeans

I have a class that extends of an abstract class, and that finally extends the javafx.application.Application class

But is not recognized by NetBeans, when i am training launch the project.

EXAMPLE
FIRST CLASS
public class MyClassLevelA 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();
    }

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

SECOND CLASS

public class JavaFXApplication2 extends com.libreries.MyClassLevelA {

    @Override
    public void start(Stage primaryStage) {
        super.start(primaryStage); 
    }
    public static void main(String[] args) {
        launch(args);
    }

}