code: public static void close(ResultSet rs, Statement stmt, Connection con) {
      close(rs);
      close(stmt);
      close(con);
    }
docs: Closes a result set, statement, and connection.  Any
  <code>SQLException</code>s thrown are ignored.
  @param rs The <code>ResultSet</code> to close.  If this value is
  <code>null</code>, no <code>ResultSet</code> is closed.
  @param stmt The <code>Statement</code> to close.  If this value is
  <code>null</code>, no <code>Statement</code> is closed.
  @param con The <code>Connection</code> to close.  If this value is
  <code>null</code>, no <code>Connection</code> is closed.