Message listener

[Vicky Pandya]

What is general way of implementing javax.jms.MessageListener interface for JMS subscriber. I am using tomcat 5 so no room for using MDB. What is the other way of achieving this? Servlet Listener or something else?

[Nathaniel Stoddard]

Any class you define can implement MessageListener. It doesn't have to a MDB.

[Vicky Pandya]

Nathaniel:- Yes, I do understand that any class I define can implement MessageListener interface. My question was, what is the general way of making this component running in memory so whenever message comes onMessage gets called. I wanted to know how you keep this thread running into memory continiously looking for message? Making it servlet or something else? any pointers would be much appreciated.

[Jaikiran Pai]

Originally posted by Vicky Pandya:
I wanted to know how you keep this thread running into memory continiously looking for message?

The message listener need not be in memory. It will be instantiated once a message arrives at the destinations, on which this is listening.

[Pradeep bhatt]

Originally posted by Vicky Pandya:
What is general way of implementing javax.jms.MessageListener interface for JMS subscriber. I am using tomcat 5 so no room for using MDB. What is the other way of achieving this? Servlet Listener or something else?

If it was a stand alone client you would need to keep the thread alive. See samples here
http://java.sun.com/products/jms/tutorial/1_3_1-fcs/doc/client_samples.html#1006838

Since your client is running on tomcat no worries.

[David O'Meara]

JMS conversations live in the EJB and Other J2EE Technologies forum.

I'll move it there for you.

Dave