ExecutorService -在JavaFX中使用已完成任务的数量填充进度条

import javafx.application.Application;
import javafx.concurrent.Task;
import javafx.concurrent.WorkerStateEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.ProgressBar;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class ExecutorServiceExample extends Application {

    private ExecutorService executorService;
    private ProgressBar progressBar;

    @Override
    public void start(Stage primaryStage) {
        executorService = Executors.newFixedThreadPool(1);

        progressBar = new ProgressBar();
        progressBar.setPrefWidth(200);

        VBox root = new VBox(progressBar);
        Scene scene = new Scene(root, 300, 200);

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

        // 创建一个任务
        Task<Void> task = new Task<Void>() {
            @Override
            protected Void call() throws Exception {
                for (int i = 0; i < 100; i++) {
                    // 模拟耗时操作
                    Thread.sleep(100);

                    // 更新进度条
                    updateProgress(i + 1, 100);
                }
                return null;
            }
        };

        // 监听任务完成事件
        task.setOnSucceeded(new EventHandler<WorkerStateEvent>() {
            @Override
            public void handle(WorkerStateEvent event) {
                // 任务完成后关闭线程池
                executorService.shutdown();
            }
        });

        // 提交任务给ExecutorService执行
        executorService.submit(task);

        // 绑定进度条的值到任务的进度
        progressBar.progressProperty().bind(task.progressProperty());
    }

    @Override
    public void stop() {
        // 应用程序关闭时，确保关闭线程池
        executorService.shutdown();
    }

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