Iam new to JMS.correct me if I am wrong. I beleive that the message acknowledgement is a contract between the provider and the subscriber.Therefore the message if acknowledged by the client will be captured at the provider end. Can i explicitly capture the acknowledgement somehow and display it, if my application is standalone and i myself am the creator of both the subscriber and the publisher. (assumption - any of the three acknowledgements) . Or is it vendor specific and the developer as such can never be sure .