how to use a iterator on the hashset on the java code example

Example: HashSet iterator() method in java

import java.util.HashSet;
import java.util.Iterator;
public class HashSetIteratorMethodExample
{
   public static void main(String[] args)
   {
      HashSet<String> hs = new HashSet<String>();
      hs.add("Welcome");
      hs.add("hello");
      hs.add("world");
      hs.add("core");
      hs.add("java");
      System.out.println("HashSet values are: " + hs);
      // create an Iterator
      Iterator<String> value = hs.iterator();
      System.out.println("iterator values are: ");
      while(value.hasNext())
      {
         System.out.println(value.next());
      }
   }
}