Computer scienceProgramming languagesJavaWorking with dataMultithreadingThread-safe collections

Thread-safe maps

The choice is up to you

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You need to choose the key-value collection for a multithreaded environment. The key is a unique ID that represents every kid in a kindergarten. The value represents how many toys the kid owns. It is known that the number of toys for every kid is constantly changing: kids lose their toys and often receive new ones. So we expect often and simultaneous updates.

Which is a better choice, ConcurrentHashMap or Collections.synchronizedMap?

Select one option from the list

ConcurrentHashMap

Collections.synchronizedMap

In this situation both options are equally suitable.

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