import java.util.*;
public class HashSetExample {
private static String names[] = { "bob", "hemanth", "hhh", "hero",
"shawn", "bob", "mike", "Rick", "rock", "hemanth", "mike",
"undertaker" };
public static void main(String args[]) {
ArrayList aList;
aList = new ArrayList(Arrays.asList(names));
System.out.println("The names elements " + aList);
HashSet ref = new HashSet(aList); // create a HashSet
Iterator i = ref.iterator();
System.out.println();
System.out.print("Unique names are: ");
while (i.hasNext())
System.out.print(i.next() + " ");
System.out.println();
}
}