HashSet Concept Simplified In Java


HashSet: Hashset is introduced in 1.2V in java. The features are..
  • Underlying data structure is HashTable. 
  • Insertion order is not preserved. It is based on hashcode of objects.
  • Null insertion is possible but only once.
  • Heterogeneous objects are allowed.
  • Duplicate objects are not allowed.[ If tried to insert a duplicate object, Java will not throw any Compile time error or run time exception,simply the add method will return false.]
  • HashSet implements serializable and cloneable interface.
  • It does not implement RandomAccess Interface
Hashset is best when we do search operation in application. The process is very fast.
HashSet Concept Simplified In Java HashSet Concept Simplified In Java Reviewed by Animesh Chatterjee on July 17, 2013 Rating: 5

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