EJB

41.What ACID stands for? ACID stands for Atomic, Consistent,Isolated and Durable. (189)

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31.How EJB implements dependency injection? EJB 3.0 specification provides annotations which can be applied on fields or setter methods to inject dependencies. EJB Container uses the global JNDI registry to locate the dependency. (144)

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21.What is Callback in EJB? Callback is a mechanism by which life cycle of an enterprise bean can be intercepted. EJB 3.0 specification has specified callbacks for which callback handler methods are to be created. EJB Container calls these callbacks.…

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  11.Explain @javax.ejb.Stateless annotation. @javax.ejb.Stateless annotation specifies that a given ejb class is a stateless session bean.Following are its attributes: name – Used to specify name of the session bean. mappedName – Used to specify the JNDI name of the…

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1.What is EJB? EJB stands for Enterprise Java Beans. EJB is an essential part of a J2EE platform. J2EE platform have component based architecture to provide multi-tiered, distributed and highly transactional features to enterprise level applications. EJB provides an architecture…

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