import java.awt.BorderLayout; 
import java.awt.Dimension; 
import java.beans.PropertyVetoException; 
import javax.swing.*; 

import javafx.application.*; 
import javafx.embed.swing.JFXPanel; 
import javafx.scene.Scene; 
import javafx.scene.control.*; 
import javafx.scene.layout.*; 


public class SwingEmbedFX2 { 
    protected static JFXPanel fxPanel; 
    protected static JDesktopPane desktopPane; 

    static void packInternalFrame(JInternalFrame iframe) { 
        try { 
            iframe.pack(); 
            iframe.setIcon(true); 
            iframe.setMaximum(true); 
            iframe.moveToFront(); 
            iframe.setVisible(true); 

        // From setMaximum method call 
        } catch (PropertyVetoException ex) { 
            System.out.println(ex); 
            ex.printStackTrace(); 
        } 
   } 

    static void launchFXFrame() { 
        JInternalFrame iframe = new JInternalFrame( 
            "FX Embedded", true, true, true); 

        iframe.setLayout(new BorderLayout()); 
        desktopPane.add(iframe); 

        try { 
            iframe.setMaximum(true); 
        // From setMaximum method call 
        } catch (PropertyVetoException ex) { 
            System.out.println(ex); 
            ex.printStackTrace(); 
        } 

        fxPanel = new JFXPanel(); 
        iframe.add(fxPanel, BorderLayout.CENTER); 

        Platform.runLater(() -> createScene()); 
        packInternalFrame(iframe); 
    } 

    public static void runTest() { 
        final JFrame f = new JFrame(); 

        f.setLayout(new BorderLayout()); 
        f.setSize(new Dimension(500, 500)); 
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
        desktopPane = new JDesktopPane(); 
        f.getContentPane().add(BorderLayout.CENTER, 
            new JScrollPane(desktopPane)); 

        JInternalFrame iframe = new JInternalFrame(); 
        iframe.setResizable(true); 
        JButton btn = new JButton("FX"); 
        btn.addActionListener(a -> launchFXFrame()); 
        iframe.add(btn); 
        desktopPane.add(iframe); 
        iframe.pack(); 
        desktopPane.validate(); 
        iframe.setVisible(true); 
        desktopPane.setVisible(true); 
        f.setVisible(true); 
    } 

    public static void createScene() { 
        StackPane fxRoot = new StackPane(); 
        fxPanel.setScene(new Scene(fxRoot)); 
        BorderPane bp = new BorderPane(); 
        fxRoot.getChildren().addAll(bp); 
        bp.setCenter(new Label("FX Label")); 
    } 

    public static void main(String [] args) { 
        try { 
            SwingUtilities.invokeAndWait(() -> runTest()); 
        } catch (Exception ex) { 
            System.out.println(ex); 
            ex.printStackTrace(); 
        } 

    } 
}