import javafx.application.Application
import javafx.stage.Stage
import javafx.scene.Scene
import javafx.scene.layout.HBox
import javafx.scene.control.Label
 
class Hello extends Application {
    static void main(args) {
        Application.launch(Hello, args)
    }
 
    void start(Stage stage) {
        def hbox = new HBox()
        def scene = new Scene(hbox, 640, 480)
        hbox.getChildren().add( new Label("Hello, JavaFX World!") )
 
        stage.setScene(scene);
        stage.setTitle("Hello, World")
        stage.show()
    }
}