Software Architecture · interview question
If you need to implement the Observer Pattern from scratch in Java, what should be the first step?
Multiple choiceHardchapter-13-curatedpremiumsoftware-architectureobserver-pattern
Answer and explanation
Correct answer
B. Define an interface for observers with an update method.
Why
Defining an interface with an update method is essential to ensure all observers implement this method, allowing the subject to notify them of changes.
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