Key Points on HashMap

Key Points on HashMap
  • HashMap works on the principal of Hashing.
  • HashMap uses LinkedList for storage.Each Node stores key and value.
  • HashMap is not synchronised.
  • hashcode() method is applied on the key object to store the value.
  • override hashCode equals when implementing a hasmap.
  • When the size of the hashmap exceeds the threshold defined loadfactor,a new buket location is created with double the sizeand starts rehashing.


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