Can you tell about your experience using the @PostConstruct annotation and in which cases you applied it?

The @PostConstruct annotation is used in Java to denote a method that should be executed after the object has been created and all dependencies have been injected, but before the object starts being used.

It is most commonly used in Spring or other frameworks for resource initialization, configuration, or state verification after bean creation.

Example of usage:

@Component
public class MyService {

    @PostConstruct
    public void init() {
        // Initialization, such as loading configuration
        System.out.println("Service initialized");
    }

}

Thus, @PostConstruct allows executing additional logic immediately after object creation, without cluttering the constructor.