import javafx.application.Application; import javafx.fxml.FXMLLoader; import javafx.scene.Parent; import javafx.scene.Scene; import javafx.stage.Stage; public class App extends Application { public void start(Stage primaryStage) throws Exception { Parent root = FXMLLoader.load(getClass().getResource( "fxml/MainView.fxml")); Scene scene = new Scene(root, 300, 250); primaryStage.setScene(scene); primaryStage.show(); } public static void main(String[] args) throws Exception { launch(args); } }