Junior — Middle

What annotations are used to define the lifecycle stages of beans in a container?

sobes.tech AI

Answer from AI

In Java, annotations are used to manage the lifecycle of beans in a container (for example, in Spring):

@PostConstruct — a method with this annotation is called after the bean is created and dependencies are injected, used for initialization.
@PreDestroy — the method is called before the bean is destroyed, for resource cleanup.

Example:

@Component
public class MyBean {

    @PostConstruct
    public void init() {
        // initialization
    }

    @PreDestroy
    public void cleanup() {
        // resource cleanup
    }
}

Also, in Spring, you can implement the InitializingBean and DisposableBean interfaces for the same purposes, but annotations are more convenient and readable.

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