import javafx.application.Application;
import javafx.embed.swing.SwingNode;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
/**
 *
 * @author aeremeev
 */
public class FXTest extends Application {
    
    @Override
    public void start(final Stage stage) throws Exception {
        StackPane pane = new StackPane();
        Scene scene = new Scene(pane, 200, 200);
        final SwingNode swingNode = new SwingNode();
        init(swingNode);
        pane.getChildren().add(swingNode);
        stage.setScene(scene);
        stage.show();
    }
    
    private void init(final SwingNode swing) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                JTextArea c = new JTextArea("TextArea");
                swing.setContent(c);
            }
        });
    }
    
    public static void main(String[] args) {
        launch(args);
    }
}