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

public class WebViewNullPointer extends Application {
  public static void main(String[] args) { launch(args); }
  @Override public void start(Stage stage) {
    final WebView webView = new WebView();
    webView.getEngine().load("http://demo.vaadin.com/sampler#ButtonPush");
//    stage.setScene(new Scene(webView));  // uncomment to prevent exceptions
//    stage.show();
  }
}