@Override
  public String getColumnText(Object element, int columnIndex) {
    ExternalBrowserInfoDAO dao = (ExternalBrowserInfoDAO) element;

    switch (columnIndex) {
      case 0:
        return dao.getIs_used();
      case 1:
        return dao.getName();
      case 2:
        return dao.getUrl();
      case 3:
        return dao.getComment();
    }

    return "*** not set column ***"; //$NON-NLS-1$
  }
 /**
  * select Obj
  *
  * @param externalDAo
  */
 private void selectData(ExternalBrowserInfoDAO externalDAo) {
   comboUsed.setText(externalDAo.getIs_used());
   textName.setText(externalDAo.getName());
   textURL.setText(externalDAo.getUrl());
   textComment.setText(externalDAo.getComment());
 }