Object-oriented programming · interview question
Why do teams use List.copyOf when returning a collection from a method in production code?
Multiple choiceMediumchapter-3-curatedpremiumoopdefensive-copying
Answer and explanation
Correct answer
C. It creates an immutable copy of the original list
Why
List.copyOf creates an immutable copy of the provided list, ensuring that the caller cannot modify the internal state of the object by altering the returned collection. This helps maintain encapsulation.
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