Demonstrate HashSet to Add Element

Here is a Java Program to Demonstrate HashSet.

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import java.util.*;   class HashSetDemo {   public static void main(String args[]) {     // create a hash set     HashSet hs = new HashSet();           // add elements to the hash set     hs.add("B");     hs.add("A");     hs.add("D");     hs.add("E");     hs.add("C");     hs.add("F");       System.out.println(hs);   } }

Output of Above Java Program
[D, E, F, A, B, C]