Computer scienceProgramming languagesJavaWorking with dataMultithreadingThread-safe collections

CopyOnWriteArrayList

Theory

CopyOnWriteArrayList vs ArrayList

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Let's compare two types of lists. Two characteristics apply to both list types.

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CopyOnWriteArrayListArrayList
Implements the List interface.
Allows thread safety.
Very costly if you update it often.
Uses the copy-on-write technique.
The underlying structure is Object[].
Can perform the remove operation while iterating.
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