Concurrency basics · interview question
Given a ConcurrentHashMap, which method would you use to atomically update a value for a given key?
Multiple choiceMediumchapter-15-curatedpremiumconcurrencyconcurrent-collections
Answer and explanation
Correct answer
B. Merge(K key, V value, BiFunction remappingFunction)
Why
The merge method is used to atomically update the value associated with a key using a BiFunction, which allows you to specify how to recompute the value.
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