Object-oriented programming · interview question
Which approach best protects a mutable internal list from external modification in a multi-threaded environment?
Multiple choiceHardchapter-3-curatedpremiumoopdefensive-copying
Answer and explanation
Correct answer
B. Using Collections.unmodifiableList with defensive copying
Why
Using Collections.unmodifiableList with defensive copying ensures that the list cannot be altered externally, and defensive copying provides each thread with its own instance. This approach maintains thread safety and protects encapsulation.
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