是否可以从close方法返回javaFX中的变量？有没有更有效的方法来做到这一点？

public interface CloseCallback {
    void onClose(String data);
}

public class MyController {
    private CloseCallback callback;

    public void setCloseCallback(CloseCallback callback) {
        this.callback = callback;
    }

    @FXML
    private void handleClose() {
        if (callback != null) {
            callback.onClose("some data");
        }
        // 关闭窗口
        ((Stage) ((Node) event.getSource()).getScene().getWindow()).close();
    }
}

public class MyController {
    @FXML
    private void initialize() {
        Stage stage = (Stage) ((Node) event.getSource()).getScene().getWindow();
        stage.setOnCloseRequest(event -> {
            // 在这里处理关闭事件并传递数据
            String data = "some data";
            // 你可以将数据存储在某个地方，或者通过其他方式传递出去
        });
    }
}

public class MyController {
    private String sharedData;

    @FXML
    private void handleClose() {
        sharedData = "some data";
        // 关闭窗口
        ((Stage) ((Node) event.getSource()).getScene().getWindow()).close();
    }

    public String getSharedData() {
        return sharedData;
    }
}

public class MyController {
    @FXML
    private void showDialog() {
        Dialog<String> dialog = new Dialog<>();
        dialog.setTitle("My Dialog");
        dialog.setContentText("Enter some data:");

        ButtonType okButtonType = new ButtonType("OK", ButtonBar.ButtonData.OK_DONE);
        dialog.getDialogPane().getButtonTypes().addAll(okButtonType, ButtonType.CANCEL);

        TextField textField = new TextField();
        dialog.getDialogPane().setContent(textField);

        dialog.setResultConverter(dialogButton -> {
            if (dialogButton == okButtonType) {
                return textField.getText();
            }
            return null;
        });

        Optional<String> result = dialog.showAndWait();
        result.ifPresent(data -> {
            // 处理返回的数据
        });
    }
}