Thread actualizar = new Thread(new Runnable() {
        @Override
        public void run() {
            while (true) {
                try {
                    actualizartabla();
                    Thread.sleep(60000);
                } catch (InterruptedException ex) {
                    Logger.getLogger(vistaSupervisor.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        }
    });