When Should I Use the @PostConstruct Annotation in a Managed Bean?

When to Use @PostConstruct in a Managed Bean

In a managed bean, the @PostConstruct annotation is called after the regular Java object constructor. This annotation allows you to initialize your bean in a controlled manner, providing several benefits over using the constructor itself.

• Initialization After Bean Injection:
  Unlike the constructor, which is called before dependency injection, @PostConstruct ensures that your bean is fully initialized and all dependencies are injected. This allows you to access and utilize these dependencies within your initialization logic.
• Guaranteed Single Invocation:
  The @PostConstruct annotation provides a contract that guarantees that it will be invoked only once during the bean's lifecycle. While it's rare for a bean to be instantiated multiple times, this guarantee ensures that your initialization logic will execute exactly once, even in exceptional scenarios.

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