import javax.swing.JFrame;

import javafx.application.Platform;
import javafx.embed.swing.JFXPanel;
import javafx.geometry.HPos;
import javafx.geometry.VPos;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.web.WebView;
import javax.swing.SwingUtilities;


public class FXInSwing {

    private static final int WIDTH = 800;
    private static final int HEIGHT = 500;

    public FXInSwing() {
        initGUI();
    }

    public void initGUI() {
        final JFXPanel panel = new JFXPanel();
        JFrame frame = new JFrame("JavaFX in Swing");
        frame.add(panel);
        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        frame.setSize(WIDTH, HEIGHT);
        frame.setLocationRelativeTo(null);
        Platform.runLater(() -> initJFXPanel(panel));
        frame.setVisible(true);
    }

    private void initJFXPanel(JFXPanel panel) {
        Scene scene = new Scene(new Browser(), WIDTH, HEIGHT);
        panel.setScene(scene);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> new FXInSwing());
    }
}

class Browser extends Pane {

    final WebView view = new WebView();

    public Browser() {
        view.getEngine().load("https://yourwebs.de");
        getChildren().add(view);
    }

    @Override
    protected void layoutChildren() {
        double w = getWidth();
        double h = getHeight();
        layoutInArea(view, 0, 0, w, h, 0, HPos.CENTER, VPos.CENTER);
    }
}