R

Ram Sharma • 3.40K Points
Extraordinary

Q. What happens when you add a null element to a TreeSet?

  • (A) It is added successfully
  • (B) NullPointerException is thrown
  • (C) It is ignored
  • (D) It replaces existing elements
  • Correct Answer - Option(B)
  • Views: 8
  • Filed under category Java
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Explanation by: Ram Sharma
`TreeSet` does not allow null elements because it uses `compareTo()` or a comparator.

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