R

Ram Sharma • 3.40K Points
Extraordinary

Q. Which collection does not allow null keys?

  • (A) HashMap
  • (B) TreeMap
  • (C) Hashtable
  • (D) LinkedHashMap
  • Correct Answer - Option(C)
  • Views: 5
  • Filed under category Java
  • Hashtags:
Explanation by: Ram Sharma
`Hashtable` does not allow null keys or null values.

You must be Logged in to update hint/solution

Discusssion

Login to discuss.

Be the first to start discuss.