Assume you would like to receive notification from the container as a stateless session bean transitions to and from the ready state. Which of the following life cycle back annotations would you…

The correct answer is B. @PostConstruct, @PreDestroy. The Lifecycle of a Stateless Session Bean The EJB container typically creates and maintains a pool of stateless session beans, beginning the stateless session bean's lifecycle. The container performs any dependency injection and then invokes the method annotated @PostConstruct…

Server Installation and Configuration

Question

Assume you would like to receive notification from the container as a stateless session bean transitions to and from the ready state. Which of the following life cycle back annotations would you use? (Choose one.)

Exhibit

Options

A@PostConstruct, @PostDestroy
B@PostConstruct, @PreDestroy
C@PreConstruct, @PostDestroy
D@PostConstruct, @PostDestroy, @Remove
E@PostConstruct, @PreDestroy, @Remove

How the community answered

(24 responses)

B
71% (17)
C
8% (2)
D
17% (4)
E
4% (1)

Explanation

The Lifecycle of a Stateless Session Bean The EJB container typically creates and maintains a pool of stateless session beans, beginning the stateless session bean's lifecycle. The container performs any dependency injection and then invokes the method annotated @PostConstruct, if it exists. The bean is now ready to have its business methods invoked by a client. At the end of the lifecycle, the EJB container calls the method annotated @PreDestroy, if it exists. The bean's instance is then ready for garbage collection. Lifecycle of a Stateless Session Bean: Note: An enterprise bean goes through various stages during its lifetime, or lifecycle. Each type of enterprise bean (stateful session, stateless session, singleton session, or message-driven) has a different lifecycle. Reference:

Topics

#lifecycle callbacks#PostConstruct#PreDestroy#stateless session bean

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