Question: 3) a) HashMap and HashSet are not thread safe- by design. What are the hazards, concerning concurrency? How would you solve this potential problem? b)

3)

a) HashMap and HashSet are not thread safe- by design. What are the hazards, concerning concurrency? How would you solve this potential problem?

b) For Blocking Queues, put() and take() are synchronized methods. Why is this required?

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