--module-path="Add\path\to\JavaFX\lib" --add-modules=javafx.controls,javafx.fxml

 package javafx11; import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.Label; import javafx.scene.layout.StackPane; import javafx.stage.Stage; public class HelloFX extends Application { @Override public void start(Stage stage) { String version = System.getProperty("java.version"); Label l = new Label ("Hello, JavaFX 11, running on "+version); Scene scene = new Scene (new StackPane(l), 300, 200); stage.setScene(scene); stage.show(); } public static void main(String[] args) { launch(); } }