How JMS is different from RPC?

JMS Interview Questions and Answers

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26. How JMS is different from RPC?

In RPC the method invoker waits for the method to finish execution and return the control back to the invoker. Thus it is completely synchronous in nature. While in JMS the message sender just sends the message to the destination and continues it's own processing. The sender does not wait for the receiver to respond. This is asynchronous behavior.

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Other Interview Questions

• What is JMS?
• Must I place all my class files in the WEB-INF folder and all JSP's outside?
• What type messaging is provided by JMS?
• How may messaging models do JMS provide for and what are they?
• What is the point-to-point model in JMS?
• What are the advantages of JMS?
• What is the publish-and-subscribe model in JMS?
• What is JMS administered object?
• What is publish/subscribe messaging?
• Which models are supported by JMS? Please, explain them.
• What are the different parts of a JMS message ?
• What is the main parts of JMS applications?
• What Is Messaging?
• What is the Role of the JMS Provider?
• What is the diffrence between Java Mail and JMS Queue
• Does JMS specification define transactions? Queue
• What is synchronous messaging? Queue
• What is asynchronous messaging? Queue
• How does a typical client perform the communication? Queue
• 20. What is JMS session? Queue
• What is the use of JMS? In which situations we are using JMS? Can we send message from one server to another server using JMS? Queue
• What is the difference between durable and non-durable subscriptions?
• What is the difference between Message producer and Message consumer?
• What is JMS application ?
• What type messaging is provided by JMS ?
• How JMS is different from RPC?
• What Is the JMS API?
• What is JMS client ?
• Give an example of using the point-to-point model
• What is Producer and Consumer?
• Can JMS utilities automatically re-establish a connection if one side of the communication link (i.e. an application that's sending/receiving messages) goes down and is restarted? Are there APIs to help detect that the other side broke a connection (went down)?
• What is the Role of the JMS Provider?
• What is JMS providerr?
• What is Byte Message ?
• What is the difference between Byte Message and Stream Message?
• What are the advantages of JMS?
• Are you aware of any major JMS products available in the market?
• What are the different types of messages available in the JMS API?
• What are the different messaging paradigms JMS supports?
• What is the difference between topic and queue?
• When Can You Use the JMS API?
• How Does the JMS API Work with the J2EE Platform?
• What is the role of JMS in enterprise solution development?
• What is the use of Message object?
• What is the basic difference between Publish Subscribe model and P2P model?
• What is the use of BytesMessage?
• What is the use of StreamMessage?
• What is the use of TextMessage?
• Why do the JMS dbms_aqadm.add_subscriber and dbms_aqadm.remove_subscriber calls sometimes hang when there are concurrent enqueues or dequeues happening on the same queue to which these calls are issued?
• Why do the TopicSession.createDurableSubscriber and TopicSession.unubscribe calls raise JMSException with the message "ORA - 4020 - deadlock detected while trying to lock object"?
• Why doesn't AQ_ADMINISTRATOR_ROLE or AQ_USER_ROLE always work for AQ applications using Java/JMS API?
• Why do I get java.security.AccessControlException when using JMS MessageListeners from Java stored procedures inside Oracle8i JServer?
• What is the use of ObjectMessage?
• What is the use of MapMessage?
• What is the difference between BytesMessage and StreamMessage?
• What is object message ?
• What is text message?
• What is Map message?
• What is the difference between queue and topic ?
• What are the three components of a Message ?
• What is the difference between queue and topic?
• What are the types of messaging?
• What is the difference between Point to Point and Publish/Subscribe
• Why doesn’t the JMS API provide end-to-end synchronous message delivery and notification of delivery?
• What are the core JMS-related objects required for each JMS-enabled application?
• How does the Application server handle the JMS Connection?
• What is Stream Message ?