Concurrency basics · interview question
In which scenario would a ConcurrentHashMap not provide a significant performance improvement over Collections.synchronizedMap?
Multiple choiceHardchapter-15-curatedpremiumconcurrencyconcurrent-collections
Answer and explanation
Correct answer
A. When used in a single-threaded application.
Why
In a single-threaded application, there is no contention for access to the map, so the concurrency benefits of ConcurrentHashMap do not apply, making it equivalent in performance to Collections.synchronizedMap.
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