Multiple choice

Which of the following is an incorrect statement about 'Observer' design pattern?

  1. This pattern defines a one-to-many dependency between objects.

  2. It collaborates with objects conforming to the target interface.

  3. It knows its observers.

  4. An updatable interface is needed for all the objects to be notified.

  5. It stores state of interest to ConcreteObserver.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is incorrect.

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