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In a managed bean, @PostConstruct is called after the regular Java object constructor.

Why would I use @PostConstruct to initialize by bean, instead of the regular constructor itself?

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  • because when the constructor is described, the bean is not hitherto initialized - i.e. no dependencies are included. In the @PostConstruct method, the bean is completely initialized and you can manage the provinces.
  • because this is the promise that ensures that this method will be requested only once in the bean lifecycle. It may occur (though unlikely) that a bean is instantiated complicated times by the container in its internal operation, but it ensures that @PostConstruct will be requested only once.

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