Shinya's Demo on https://youtu.be/op6zZDypPg8 in pure Java 8/9

WebApp.java

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

public class WebApp extends Application {
    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage stage) throws Exception {
        WebView wv = new WebView();
        wv.getEngine().load("http://www.thm.de");
        stage.setScene(new Scene(wv));
        stage.show();
    }
}