private void cambiarPuntosActionPerformed( java.awt.event.ActionEvent evt) { // GEN-FIRST:event_cambiarPuntosActionPerformed if (Double.parseDouble(Puntos.getText()) > 0) { Double t = Double.parseDouble(total.getText()) - Double.parseDouble(Puntos.getText()); if (t < 0.0) { t = 0.0; } total.setText(t.toString()); Puntos.setText("0"); listaTarjetas.get(clientebox.getSelectedIndex() - 1).CangearPuntos(); } } // GEN-LAST:event_cambiarPuntosActionPerformed