Day 15
Quiz
A1: | Point-to-point and publisher-subscriber. |
A2: | Synchronous and asynchronous. |
A3: | First, the messaging should be asynchronous; that means the receiver need not wait to receive the message. The JMS provider should notify the receiver/consumer when a message comes on the queue.
Second, the message must be delivered once and only once. |
A4: | A header zone, containing the header as name-value pairs; a properties zone, containing the selector properties for the message; and a body zone, which contains the content of the message. |
Exercise
A1: | The following code listing shows a HelloWorldPublisher.java program containing the main() method, and a message-driven bean called MessageHelloBean. HelloWorldPublisher publishes the HelloWorld message ... |
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