Software Architecture · interview question
Which of the following best describes the Observer Pattern in Java?
Multiple choiceEasychapter-13-curatedpremiumsoftware-architectureobserver-pattern
Answer and explanation
Correct answer
D. A design pattern where an object, known as the subject, maintains a list of its dependents, called observers, and notifies them of any state changes.
Why
The Observer Pattern involves a subject and its observers. The subject maintains a list of observers and notifies them when a state change occurs, which helps in decoupling the event producer from its consumers.
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