import javafx.application.Platform;
import javafx.embed.swing.JFXPanel;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class Main implements Runnable {
    JTabbedPane tabbedPane = new JTabbedPane();

    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Main());
    }

    @Override public void run() {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setPreferredSize(new Dimension(800, 600));

        final JButton button = new JButton("click me");
        button.addActionListener(new ActionListener() {
            @Override public void actionPerformed(ActionEvent e) {
                button.setEnabled(false);
                for (int i = 0; i < 500; i++) {
                    moveTabTo(0, 1);
                }
            }
        });

        tabbedPane.addTab("_TAB_1", new Tab(Color.ROSYBROWN));
        tabbedPane.addTab("_TAB_2", new Tab(Color.LIGHTCORAL));

        JPanel panel = new JPanel(new BorderLayout());
        panel.add(tabbedPane, BorderLayout.CENTER);
        panel.add(button, BorderLayout.NORTH);

        frame.getContentPane().add(panel);
        frame.pack();
        frame.setVisible(true);
    }

    public void moveTabTo(int fromIndex, int toIndex) {
        Component component = tabbedPane.getComponentAt(fromIndex);

        String label = tabbedPane.getTitleAt(fromIndex);
        String tooltip = tabbedPane.getToolTipTextAt(fromIndex);

        tabbedPane.remove(fromIndex);
        tabbedPane.insertTab(label, null, component, tooltip, toIndex);
    }

    class Tab extends JFXPanel {
        Tab(final Color color) {
            Platform.runLater(new Runnable() {
                @Override public void run() {
                    setScene(new Scene(new Group(), color));
                }
            });
        }
    }
}