在图表加载javafx时显示进度

import javafx.application.Application;
import javafx.concurrent.Task;
import javafx.scene.Scene;
import javafx.scene.chart.BarChart;
import javafx.scene.chart.CategoryAxis;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.scene.control.ProgressBar;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class ChartLoadingProgress extends Application {

    @Override
    public void start(Stage primaryStage) {
        // 创建进度条和图表
        ProgressBar progressBar = new ProgressBar();
        BarChart<String, Number> chart = new BarChart<>(new CategoryAxis(), new NumberAxis());
        VBox root = new VBox(progressBar, chart);

        // 创建加载图表的任务
        Task<Void> loadChartTask = new Task<Void>() {
            @Override
            protected Void call() throws Exception {
                // 模拟加载过程
                for (int i = 0; i <= 100; i++) {
                    updateProgress(i, 100);
                    Thread.sleep(50);
                }

                // 加载图表数据
                XYChart.Series<String, Number> series = new XYChart.Series<>();
                series.getData().add(new XYChart.Data<>("A", 10));
                series.getData().add(new XYChart.Data<>("B", 20));
                series.getData().add(new XYChart.Data<>("C", 30));
                chart.getData().add(series);

                return null;
            }
        };

        // 绑定进度条的值到加载任务的进度
        progressBar.progressProperty().bind(loadChartTask.progressProperty());

        // 启动加载任务
        new Thread(loadChartTask).start();

        // 创建场景并显示
        Scene scene = new Scene(root, 400, 300);
        primaryStage.setScene(scene);
        primaryStage.show();
    }

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