Java thread safety of list

Question

I have a List, which is to be used either in thread-safe context or in a non thread-safe one. Which one will it be, is impossible to determine in advance.

In such specia

Answer 1

If the traverses happens more often than writing I'd look into CopyOnWriteArrayList.

A thread-safe variant of ArrayList in which all mutative operations (add, set, and so on) are implemented by making a fresh copy of the underlying array.