Have you ever used the scope system?

In Java, the term "scope system" is not used directly, but if we talk about scope management systems, then yes, I have worked with various levels of variable and component visibility, for example, in the Spring Framework, where there is scope for beans: singleton, prototype, request, session, etc. This allows managing the lifetime and visibility scope of objects in the application.

Example of configuring a bean scope in Spring:

@Component
@Scope("prototype")
public class MyBean {
    // each call will create a new instance
}