Reacting To State Changes : Task « JavaFX « Java






  1. Java
  2. JavaFX
  3. Task

Reacting To State Changes

  
import javafx.application.Application;
import javafx.application.Platform;
import javafx.concurrent.Task;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class Main extends Application {

  @Override
  public void start(Stage stage) {
    final Group group = new Group();
    Scene scene = new Scene(group, 300, 150);
    stage.setScene(scene);
    stage.setTitle("Sample");
    Task<Integer> task = new Task<Integer>() {
        @Override protected Integer call() throws Exception {
            int iterations = 0;
            for (iterations = 0; iterations < 10; iterations++) {
                if (isCancelled()) {
                    break;
                }
                System.out.println("Iteration " + iterations);
            }
            return iterations;
        }

        @Override protected void succeeded() {
            super.succeeded();
            updateMessage("Done!");
        }

        @Override protected void cancelled() {
            super.cancelled();
            updateMessage("Cancelled!");
        }

        @Override protected void failed() {
            super.failed();
            updateMessage("Failed!");
        }
    };
    task.run();
    System.out.println(task.getMessage());

    stage.show();
  }

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








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