code: static void closeQuietly(Connection ps)
      {
          if (ps != null)
          {
              try
              {
                  ps.close();
              }
              catch (Exception e)
              {
                  jqmlogger.warn("Could not close a DB connection - possible pool leak", e);
              }
          }
      }
docs: Close utility method.
  
  @param ps
  statement to close.