lblOpcion1.setTransferHandler(new TransferHandler("text"));

MouseListener ml = new MouseAdapter() {

// Crear mètodo para transferir

@Override

public void mousePressed(MouseEvent e) {

JComponent jc = (JComponent) e.getSource();

TransferHandler th = jc.getTransferHandler();

 th.exportAsDrag(jc, e, TransferHandler.COPY);

};

lblOpcion1.addMouseListener(ml);