JMS Queue receiver is a starter activity. It starts a

process on the recipt of a message for the specified JMS

queue, it is listening to.

ON the other hand, JMS queue requestor is not a starter

activity, it is used to send a request to a JMS queue and

receives a response back from the JMS client. This activity

uses temporary destinations to ensure that reply messages

are received only by the process that sent the request.