Basics of HashSet Class

The HashSet class is a concrete implementation of the Set interface in Java and is part of the java.util package. It is designed to store a collection of unique elements, meaning that duplicates are not allowed. Internally, HashSet uses a hash table to store elements, which provides constant-time performance for basic operations like add, remove, and contains, assuming the hash function disperses elements properly.

Syntax

To create a HashSet, you use the following syntax:

HashSet<Type> set = new HashSet<Type>();

• Explanation:
  • `HashSet<Type>