hashset.java

package lab8;
import java.util.*; 
class hsetTest 
{ 
    public static void main(String[]args) 
    { 
        HashSet<String> h = new HashSet<String>(); 
  
	   h.add("India"); 
        h.add("Australia"); 
        h.add("South Africa"); 
        h.add("India");
  
        System.out.println(h); 
        System.out.println("\nList contains India or not:" + 
        h.contains("India")); 
  
        h.remove("Australia"); 
        System.out.println("\nList after removing Australia:" +h); 
  
        System.out.println("\nIterating over list:"); 
        Iterator<String> i = h.iterator(); 
  
	   while (i.hasNext()) 
            System.out.println(i.next()); 
    } 
}