Java thread-safe passing of collection objects from one thread to another?

I have thought about (and discussed) this question a lot and I have come up with another answer, which, I hope, will be the best solution.

There seems to be no synchronization issue here. You create a new Set object for each passToGatherThread and do it after modifying the set. No objects will be lost.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.