University of Central Florida (UCF) COP3330 Object Oriented Programming Final Practice Exam

The statement is false because subjects and observers in the observer design pattern are intentionally designed to be loosely coupled. This loose coupling allows for flexibility and extensibility in how they interact.

In this design pattern, a subject maintains a list of its observers and notifies them of state changes, but it does not need to know the details of how the observers implement their responses. This means that observers can be added or removed without modifying the subject, leading to a more modular design. This decoupling is key to the observer pattern's ability to accommodate dynamic system behavior and enhances maintainability, as the components can evolve independently.

In contrast, tightly coupled systems can lead to problems such as increased interdependencies, making the codebase more challenging to manage, test, and modify. By promoting loose coupling, the observer pattern allows for different kinds of observers to be updated independently based on notifications from the subject, leading to more versatile systems.