Using SceneBuilder to Create a User Interface - JavaFX 8: A Definitive Guide to Building Desktop, Mobile, and Embedded Java Clients - page 88

Understanding the FXMLLoader
Now that we understand both the FXML file and the controller class that works with the FXML file, we turn our
attention to the loading of the FXML file at runtime. The FXMLLoader class in the javafx.fxml package does the bulk
of the work of loading FXML files. In our example, the FXML file loading is done in the StageCoachMain class.
Listing 3-3 shows the StageCoachMain class.
Listing 3-3. StageCoachMain.java
package projavafx.stagecoach.ui;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.geometry.Rectangle2D;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.stage.Screen;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
import java.io.IOException;
import java.util.List;
public class StageCoachMain extends Application {
@Override
public void start(Stage stage) throws IOException {
final StageStyle stageStyle = configStageStyle();
FXMLLoader fxmlLoader = new FXMLLoader(StageCoachMain.class
.getResource("/projavafx/stagecoach/ui/StageCoach.fxml"));
Group rootGroup = fxmlLoader.load();
final StageCoachController controller = fxmlLoader.getController();
controller.setStage(stage);
controller.setupBinding(stageStyle);
Scene scene = new Scene(rootGroup, 250, 350);
scene.setFill(Color.TRANSPARENT);
stage.setScene(scene);
stage.setOnCloseRequest(we -> System.out.println("Stage is closing"));
stage.show();
Rectangle2D primScreenBounds = Screen.getPrimary().getVisualBounds();
stage.setX((primScreenBounds.getWidth() - stage.getWidth()) / 2);
stage.setY((primScreenBounds.getHeight() - stage.getHeight()) / 4);
}
public static void main(String[] args) {
launch(args);
}