如何在onMessage事件侦听器中向ObservableList添加项

import javafx.application.Application;
import javafx.application.Platform;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.stage.Stage;

public class MessageListenerExample extends Application {

    private ObservableList<String> messageList;

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

    @Override
    public void start(Stage primaryStage) {
        // 创建ObservableList对象
        messageList = FXCollections.observableArrayList();

        // 模拟消息接收
        simulateMessageReceived();

        // 打印消息列表
        System.out.println(messageList);
    }

    private void simulateMessageReceived() {
        // 模拟接收消息并添加到ObservableList中
        // 假设每次接收到消息时，调用onMessage方法
        String message = "New message";

        onMessage(message);
    }

    private void onMessage(String message) {
        // 在onMessage事件侦听器中添加项到ObservableList
        Platform.runLater(() -> {
            messageList.add(message);
        });
    }
}