Q. Which of those is synchronized and does not allow null elements?

  • (A) Vector
  • (B) CopyOnWriteArraySet
  • (C) CopyOnWriteArrayList
  • (D) ConcurrentSkipListSet
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✅ Correct Answer: (D) ConcurrentSkipListSet

Published by Uday Singh ⭐ 8.14K Points at 26-Aug-2022 05:26 pm in JAVA

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