How to avoid ConcurrentModificationException in concurrent code when iterating Map's values? Any safe API for this?

No, because the array is not affected by further edits of the map.

Yeah but does

toTypedArray()

iterates over the collection in a way that could be affected by modification of the collection/map?

could you use a

ConcurrentHashMap

instead?

If you are modifying on another thread, you would still risk this, and you need to use what Brian suggested (

ConcurrentHashMap

).

With multiple threads it would be smart to synchronize work. When iterating over map, store keys which need to be removed in a list and do that after iteration. That how you prevent modification while iterating.