If more number of write operation then never suggest to to use CopyOnWriteArraySet
Duplicates are not allowed
Insertion order is preserved
Heterogenious values are allowed
Null insertion is allowed
While one thread is iterating other threads are allowed to perform write operation and no concurrent modification exception is thrown hence Iterator is FailSafe
Iterator cannot perform Remove else with throw UnsupportedOperationException
No new method on CopyOnWriteArraySet unlike other ConcurrentClasses
