public void updateRequestHandler(String newvalue, String columnname, String user) {

    try {
      sql.getConnection();
    } catch (ClassNotFoundException e) {
      e.printStackTrace();
    } catch (SQLException e) {
      e.printStackTrace();
    }

    try {

      sql.updateRequestDatabase(newvalue, columnname, user);
      sql.close();
    } catch (Exception e) {
      e.printStackTrace();
    }
  }