Where to place NotesFactory.createSession() in servlet?

Hi to all.

I want to place in session creation in the init() method in my servlet.

Like this:

import lotus.domino.*

public class SimpleServlet extends HttpServlet {

private Session s;

public void init(ServletConfig config) throws ServletException {

  s = NotesFactory.createSession();

}

public void doPost(HttpServletRequest req, HttpServletResponse res)

throws ServletException, IOException

{

Database db = s.getDatabase(…);

}

Is it good ? Is it right way to treat Session ?

Thank you very much in advance.