BorderPane внутри файла f xml

Question

Я пытаюсь загрузить файл af xml в borderPane.

, а borderPane находится внутри контроллера af xml (это как загрузка af xml в f xml) но у меня белый экран

это код:

package gui;

import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.image.ImageView;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.Pane;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;

import java.io.IOException;
import java.net.URL;

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.stage.Stage;

public class CompanyMainC extends Application
{
    private Stage primaryStage;
    private AnchorPane mainLayout;
    @FXML
    private AnchorPane mainProgramPane;
    @FXML
    private Label headlineLable;
    @FXML
    private BorderPane whiteBorderPane;
    private URL path;
    @FXML
    void handleHomeButtonClick(ActionEvent event) 
    {
        FxmlLoader object = new FxmlLoader();
        Pane view = object.getPage("CompanyHome");
        whiteBorderPane.setCenter(view);
    }

    @FXML
    void handleHomeHeatingButtonClick(ActionEvent event)
    {
        FxmlLoader object = new FxmlLoader();
        Pane view = object.getPage("CompanyHomeHeatingMain");
        whiteBorderPane.setCenter(view);
    }

    @FXML
    void handleMessagesButtonClick(ActionEvent event)
    {
        FxmlLoader object = new FxmlLoader();
        Pane view = object.getPage("CompanyMessagesMain");
        whiteBorderPane.setCenter(view);
    }

    @Override
    public void start(Stage primaryStage) throws IOException
    {   this.primaryStage = primaryStage;
        this.primaryStage.setTitle("MyFuel App");

        initializeView();
    }

    private void initializeView() throws IOException
    {
        // load everything we are doing in the scene builder
        FXMLLoader loader = new FXMLLoader();
        loader.setLocation(ClientMainC.class.getResource("/gui/CompanyMainView.fxml"));
        mainLayout = loader.load();

        Scene scene = new Scene(mainLayout);

        primaryStage.setScene(scene);

        primaryStage.show();
        FXMLLoader loader2 = new FXMLLoader();
        path = getClass().getResource("CompanyHome.fxml");
        try {
        loader2.setLocation(path);            

        whiteBorderPane=new BorderPane();
        whiteBorderPane.setCenter(loader2.load());
        } catch (IOException e){
            System.out.println("Not found: " + path);
            e.printStackTrace();
        }     
    }

    public static void main(String[] args)
    {

        launch(args);
    }
}

У меня белый экран внутри companyMainView, но я хочу видеть CompanyHome внутри CompanyMainView после запуска проекта (без нажатия кнопок)

Спасибо за помощь