- It's about using composition rather than inheritance
- Strategy Pattern defines a family of algorithms, encapsulate them and make them interchangeable
- Strategy let the algorithm vary independently of the client using it.
- Examples at
com.ridait.dps.strategy - UML Diagram:
- Observer Pattern defines a One-To-Many dependency between objects so that when one object changes state all of its dependent are notified and updated automatically
- Observable (called also subject) is observed by Observers
- addObserver(), removeObserver() and notifyObservers() are the main methods that an Observable implements
- update() is the method inside the Observer that is called whenever an Observable try to notifyObservers()
- Example at
com.ridait.dps.observer - UML Diagram:
