I’m new to Domino programming in Java. I am trying to update (reconnect) the Notes/Sametime connection at certain intervals. I’m using NotesFactory.createSession(QueueServer, QueueUser, QueuePass) to create the connection and Sess.recycle() to close out a connection. However, if I createSession() while a Session is already open, I get a DuplicateObjectException. If I recycle when there is no session open, I get a NullPointerException. Is there a better way to manage the connection without having to worry about these exception conditions? In particular, I would like a getSession() type method, but one doens’t seem to be available. Any suggestions would be appreciated.
Subject: createSession() and recycle() confusion
Create your own getSession() method that uses a Singleton pattern.
Class MySession {
static Session session = null;
public static Session getSession() {
if (session == null) {
session = NotesFactory.createSession(…); // lazy inialize at first access
}
return session;
}
}
Using the above pattern (bar any bugs tht have sneaked its way in 
you will only ever have one Session instance, since it is declared static. And you won’t ever have to recycle it, although you could have a static method MySession.recycle() that recycles the session object. But there is no point in calling the recycle method before the application exits.
So any code may make a call like:
Session session = MySession.getSession()
Subject: RE: createSession() and recycle() confusion
Thank you very much. That helped a lot!
Doug