A

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Q. Which of the following will throw NullPointerException?

  • (A) new HashSet<>().add(null)
  • (B) new TreeSet<>().add(null)
  • (C) new LinkedHashSet<>().add(null)
  • (D) new ArrayList<>().add(null)
  • Correct Answer - Option(B)
  • Views: 11
  • Filed under category Java
  • Hashtags: Java Set
Explanation by: Admin
TreeSet does not allow null if a comparator or natural ordering is used.

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