HashSet Example

 import java.util.*;   
 class HashSetTest  
 {  
      public static void main(String[]args)  
      {  
           HashSet<String> name = new HashSet<String>();   
           name.add("Madhu");            
           name.add("Afiz");  
           name.add("Siva");  
           name.add("Raghav");  
           name.add("Afiz"); // this will not stored. since HashSet didn't allow duplicates.   
      Iterator<String> iterator = name.iterator();   
      while(iterator.hasNext())  
           {  
                System.out.println(iterator.next()); // Raghav Siva Afiz Madhu prints these values.   
           }  
      }  
 }