Kui sageli kutsutakse välja meetod, millele on märgitud @PreDestroy, Springis bini elutsükli lõppedes?

The method annotated with @PreDestroy in Spring is called once at the end of the bean's lifecycle, i.e., before it is destroyed by the Spring container.

This occurs in the following cases:

• When the application or Spring context is stopped.
• When a bean scope is removed (e.g., for session or request scope).

@PreDestroy is used for releasing resources, closing connections, saving state, and other cleanup operations.

Example:

@Component
public class MyBean {

    @PreDestroy
    public void cleanup() {
        System.out.println("Bean is being destroyed");
        // release resources
    }
}

Thus, the method with @PreDestroy is invoked exactly once during the bean's lifecycle, immediately before its destruction.