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JMS interview questions

!!! JMS interview questions !!!

Q. When to Remove messages from the queue ?



When an application uses ConnectionConsumers, JMS might need to remove messages from the queue in a number of situations:
1) Badly formatted message

A message might arrive that JMS cannot parse.

2) Poison message
A message might reach the backout threshold, but the ConnectionConsumer fails to requeue it on the backout queue.

3)No interested ConnectionConsumer

For point-to-point messaging, when the QueueConnectionFactory is set so that it does not retain unwanted messages, a message arrives that is unwanted by any of the ConnectionConsumers.

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