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JMS Pertanyaan dan Jawaban Wawancara

Test your skills through the online practice test: JMS Quiz Online Practice Test

Ques 11. What is the diffrence between Java Mail and JMS Queue?

JMS is the ideal high-performance messaging platform for intrabusiness messaging, with full programmatic control over quality of service and delivery options.
JavaMail provides lowest common denominator, slow, but human-readable messaging using infrastructure already available on virtually every computing platform.

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Ques 12. Does JMS specification define transactions?

JMS specification defines a transaction mechanisms allowing clients to send and receive groups of logically bounded messages as a single unit of information. A Session may be marked as transacted. It means that all messages sent in a session are considered as parts of a transaction. A set of messages can be committed (commit() method) or rolled back (rollback() method). If a provider supports distributed transactions, it's recommended to use XAResource API.

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Ques 13. What is synchronous messaging?

Synchronous messaging involves a client that waits for the server to respond to a message. So if one end is down the entire communication will fail.

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Ques 14. What is asynchronous messaging?

Asynchronous messaging involves a client that does not wait for a message from the server. An event is used to trigger a message from a server. So even if the client is down , the messaging will complete successfully.

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Ques 15. How does a typical client perform the communication?

1. Use JNDI to locate administrative objects.
2. Locate a single ConnectionFactory object.
3. Locate one or more Destination objects.
4. Use the ConnectionFactory to create a JMS Connection.
5. Use the Connection to create one or more Session(s).
6. Use a Session and the Destinations to create the MessageProducers and MessageConsumers needed.
7. Perform your communication.

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