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- 1. Presentation For: JMS (Java Messaging Service) Radha 19-Nov-2008 Date : Nov-19-2008 Presented By : Radha. C
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Editor's Notes
- Tip: Can use a QueueSession to create a receiver for the queue myQueue , and TopicSession to create a subscriber for the topic myTopic
- Once message delivery begins, the message consumer automatically calls the message listener's onMessage method whenever a message is delivered. The onMessage method takes one argument of type Message, which the method can cast to any of the other message types. **The same listener can obtain messages from either a queue or a topic, depending on whether the listener is set by a QueueReceiver or a TopicSubscriber object.
- -Every message has a unique identifier, represented in the header field JMSMessageID. -The value of another header field, JMSDestination, represents the queue or the topic to which the message is sent. -Other fields include a timestamp and a priority level.