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EJB -- Real Time Tech  RSS feed

Edward Chen
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Hi, I am wondering one question: how EJB or J2EE can implement the Real Time Technology? When we are in the J2SDK, we have the Observer class to help monitor the data change. But how we can do in the J2EE? we can use the MessageBean, but the problems are two:
1. Container can guarantee what time / order message beans will be implemented?
2. Even using MessageBean, how it can notify the Front client interface (html,JSP,Swing client) from the backend?
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