JavaFX，Label setText中的倒计时计时器

import javafx.application.Application;
import javafx.application.Platform;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class CountdownTimer extends Application {
    private static final int COUNTDOWN_SECONDS = 60;
    private Label timerLabel;

    @Override
    public void start(Stage primaryStage) {
        timerLabel = new Label();
        timerLabel.setStyle("-fx-font-size: 24px;");

        VBox root = new VBox(timerLabel);
        Scene scene = new Scene(root, 200, 100);

        primaryStage.setTitle("Countdown Timer");
        primaryStage.setScene(scene);
        primaryStage.show();

        startCountdown();
    }

    private void startCountdown() {
        Thread countdownThread = new Thread(() -> {
            for (int i = COUNTDOWN_SECONDS; i >= 0; i--) {
                final int secondsLeft = i;
                Platform.runLater(() -> timerLabel.setText(formatTime(secondsLeft)));

                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        });

        countdownThread.start();
    }

    private String formatTime(int seconds) {
        int minutes = seconds / 60;
        int remainingSeconds = seconds % 60;
        return String.format("%02d:%02d", minutes, remainingSeconds);
    }

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