/*
Immutable generic version of the Iterator Interface
SWE - 619 (Fall 2009)
*/

public interface  ImmutableIterator <E> {
    
   public boolean hasNext();
     //Effects: Returns true if there are more elements to yield 
     //else retruns false
     
   public E nextObject();
     //Effects: If there are more results to yield, returns next result 
     //otherwise, throws NoSuchElementException
     
   public ImmutableIterator <E> nextIterator();
     //Effects: If there are more results to yield, returns next ImmutableIterator
     //otherwise, throws NoSuchElementException
}