import javafx.application.Application;
import javafx.application.Platform;
import javafx.scene.Scene;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javafx.stage.Stage;

import java.util.Timer;
import java.util.TimerTask;

public class FXTest extends Application {
    private static final String URL = "http://www.netbeans.org";
    private static final double MIN_ZOOM = .1; // 1.0 means 100%
    private static final double MAX_ZOOM = 2;
    private static final long DELAY = 1000; // ms

    int n = 0;

    Scene createScene(String url) {
        final WebView webView = new WebView();
        final WebEngine webEngine = webView.getEngine();
        webEngine.load(url);

        Scene scene = new Scene(webView);

        TimerTask task = new TimerTask() {
            @Override public void run() {
                Platform.runLater(new Runnable() {
                    public void run() {
                        webView.setZoom(MIN_ZOOM + Math.random() * (MAX_ZOOM - MIN_ZOOM));
                        System.out.println(++n + " webView.getZoom() = " + webView.getZoom());
                    }
                });
            }
        };
        new Timer(true).schedule(task, 5000, DELAY);
        return scene;
    }

    @Override public void start(Stage stage) {
        stage.setTitle("WebLauncher (JavaFX Sample)");
        stage.setScene(createScene(URL));
        stage.sizeToScene();
        stage.show();
    }

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