如何在Java FX中将图像添加为组合框中的选项

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.ComboBox;
import javafx.scene.control.ListCell;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.stage.Stage;

public class ImageComboBoxExample extends Application {

    @Override
    public void start(Stage primaryStage) {
        // 准备图像资源
        Image image1 = new Image("image1.png");
        Image image2 = new Image("image2.png");
        Image image3 = new Image("image3.png");

        // 创建组合框选项
        ComboBox<Image> comboBox = new ComboBox<>();
        comboBox.getItems().addAll(image1, image2, image3);

        // 自定义组合框单元格
        comboBox.setCellFactory(param -> new ListCell<>() {
            private final ImageView imageView = new ImageView();

            @Override
            protected void updateItem(Image item, boolean empty) {
                super.updateItem(item, empty);
                if (empty || item == null) {
                    setGraphic(null);
                } else {
                    imageView.setImage(item);
                    imageView.setFitWidth(20);
                    imageView.setFitHeight(20);
                    setGraphic(imageView);
                    setText(null);
                }
            }
        });

        primaryStage.setScene(new Scene(comboBox, 200, 100));
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}