One time tasking in javafx

import javafx.application.Application;
import javafx.application.Platform;
import javafx.concurrent.Task;
import javafx.concurrent.Worker;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.ProgressBar;
import javafx.scene.effect.GaussianBlur;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.stage.Stage;


/*
 @Author : Aamir khan
 */
public class Main extends Application {

    @Override
    public void start(Stage window) throws Exception {
        StackPane root = new StackPane();
        VBox pane = new VBox();

        Task task = new Task<Integer>() {
            @Override
            public Integer call() throws Exception {

                Label counter = new Label();
                counter.setFont(Font.font("Arial", FontWeight.SEMI_BOLD, 25));
                StackPane cover = new StackPane();

                Platform.runLater(() -> {
                    cover.getChildren().add(counter);
                    pane.setEffect(new GaussianBlur(2.0f));
                    root.getChildren().add(cover);
                    counter.textProperty().bind(this.messageProperty());
                });

                int i;
                final int max = 100;

                for (i = 1; i <= max; i++) {
                    if (isCancelled()) {
//                        updateMessage("Task Canclled");
                        System.out.println("Task Canclled");
                        break;
                    }

                    updateMessage("Number = " + i);
                    System.out.println("Number = " + i);
                    updateProgress(i, max);

                    try {
                        Thread.sleep(50);
                    } catch (InterruptedException e) {
                    }
                    if (isCancelled()) {
                        updateMessage("Task Cancelled");
                    }

                }
                return i;
            }

            @Override
            public void succeeded() {
                super.succeeded();
                root.getChildren().remove(1);
                pane.setEffect(null);
            }
        };

        task.stateProperty().addListener(
                (ob, o, n) -> {
                    if (n.equals(Worker.State.SCHEDULED)) {
                        System.out.println("Schedule");
                    }

                    if (n.equals(Worker.State.SUCCEEDED)) {
                        System.out.println("kahatam");
                    }
                }
        );
        Button start = new Button("Start");
        start.setOnAction(e -> {
            Thread t = new Thread(task);
            t.setDaemon(true);
            t.start();
        });

        ProgressBar pb = new ProgressBar();
        pb.progressProperty().bind(task.progressProperty());

        pane.setSpacing(5);
        pane.getChildren().addAll(pb, start);
        pane.setAlignment(Pos.CENTER);

        root.getChildren().add(pane);

        window.setTitle("One time tasking in javafx");
        window.setScene(new Scene(root, 400, 250));
        window.show();

    }

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

}