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What is HashMap and Map?

Map is Interface and Hashmap is class that implements that and its not serialized HashMap is non serialized and Hashtable is serialized.
Asked by: Interview Candidate | Asked on: Dec 18th, 2003
Showing Answers 1 - 1 of 1 Answers
svsathya

Answered On : Mar 31st, 2007

An object that maps keys to values. A map cannot contain duplicate keys; each key can map to at most one value
This implementation provides all of the optional map operations, and permits null values and the null key
map implementations, like the TreeMap class, make specific guarantees as to their order; others, like the HashMap class, do not.

  
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