Lifecycle Callback Methods

A method in the bean class may be declared as a lifecycle callback method by annotating the method with the following annotations:

• javax.annotation.PostConstruct: Methods annotated with @PostConstruct are invoked by the container on newly constructed bean instances after all dependency injection has completed and before the first business method is invoked on the enterprise bean.

• javax.annotation.PreDestroy: Methods annotated with @PreDestroy are invoked after any method annotated @Remove has completed and before the container removes the enterprise bean instance.

• javax.ejb.PostActivate: Methods annotated with @PostActivate are invoked by the container after the container moves the bean from secondary storage to active status.

• javax.ejb.PrePassivate: Methods annotated with @PrePassivate are invoked by the container before it passivates the enterprise bean, meaning that the container temporarily removes the bean from the environment and saves it to secondary storage.

Lifecycle callback methods must return void and have no parameters.