A major feature missing from EJB 1.1 was a bean that could receive messages via an intermediate queue; sessions and entity EJBs could only be called synchronously via their business logic and life cycle interfaces. EJB 2.0 introduced the message-driven EJB to rectify this problem, an EJB that is able to communicate with other EJBs and clients in an asynchronous manner.
KeywordsBusiness Logic Component Class Shopping Cart Public Class Security Role
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