code: @Override
      public PoolablePreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
          return prepareStatement(sql, -1, resultSetType, resultSetConcurrency, -1);
      }
docs: Method prepareStatement.
  
  @param sql
  @param resultSetType
  @param resultSetConcurrency
  @return PreparedStatement
  @throws SQLException
  @see java.sql.Connection#prepareStatement(String, int, int)