如何在没有监听器的情况下在JavaFX中检查按键是否关闭？

import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class KeyCheckExample extends Application {

    @Override
    public void start(Stage primaryStage) {
        VBox root = new VBox();
        Scene scene = new Scene(root, 400, 300);

        scene.setOnKeyPressed(new EventHandler<KeyEvent>() {
            @Override
            public void handle(KeyEvent event) {
                if (event.getCode() == KeyCode.ESCAPE) {
                    // 执行关闭操作或其他逻辑
                    primaryStage.close();
                }
            }
        });

        primaryStage.setScene(scene);
        primaryStage.show();
    }

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