Concurrency basics · interview question
How does ConcurrentHashMap handle null keys or values?
Multiple choiceMediumchapter-15-curatedpremiumconcurrencyconcurrent-collections
Answer and explanation
Correct answer
D. It does not allow null keys or values.
Why
ConcurrentHashMap does not allow null keys or values because nulls are used to signify the absence of a value, which can complicate concurrent operations and lead to unexpected behavior.
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