private void selectCliente() {
   int selected = table.getSelectedRow();
   Persona persona = tableModel.getData().get(selected);
   controller.getView().getTxtIdCliente().setText(persona.getId().toString());
   field.setText("");
   buscar();
   popup.hidePopup();
   controller.cargarCliente();
   controller.getView().getTxtIdCliente().requestFocus();
 }
 private void buscar() {
   String searchString = field.getText();
   tableModel.search(searchString);
   tableModel.fireTableDataChanged();
 }