• DaPorkchop_@lemmy.ml
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      6 months ago

      Only if one thread modifies it while another one is iterating over it, if two threads try to modify the list at once there isn’t any kind of synchronization and it really could break your list.

      • unalivejoy@lemm.ee
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        6 months ago

        For everything else, there’s Collections.synchronizedList(new ArrayList<>())