What is true regarding the Observer pattern? There is a many-to-many dependency

Question

What is true regarding the Observer pattern?

There is a many-to-many dependency between the observable classes and the <<Observer>> abstract class;

<<Observer>> must implement the method update();

Changes to the classes that implement <<Observer>> do not affect the observable classes;

Whenever there is a change in the observers, all observables will be notified;

There is a many-to-many dependency between the observable classes and the <<Observer>> abstract class;

<<Observer>> must implement the method update();

Changes to the classes that implement <<Observer>> do not affect the observable classes;

Whenever there is a change in the observers, all observables will be notified;

Explanation / Answer

Ans: <<Observer>> must implement the method update();

THis is False : Whenever there is a change in the observers, all observables will be notified;, because any change in observables, it notify all its observers

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.