code: public static boolean updateRow(Connection conn,
                                      String table,
                                      String[] columns,
                                      String[] values,
                                      String uniqueColumn,
                                      boolean[] numeric) throws SQLException {
          return instance.i_updateRow(conn,
                                      table,
                                      columns,
                                      values,
                                      uniqueColumn,
                                      numeric);
      }
docs: Updates an existing row.
  
  @return false if the row did not previously exist and therefore was not
  updated.