package dk.itu.oop.lecture5;

public interface OOPIterator extends Cloneable{
	
	/* pre: none
	 * post: return true if the iterator is not empty.
	 */
	public boolean hasNext();
	
	/* pre: hasNext()
	 * post: return head of iterator; this is now tail.
	 */
	public Object next();
	
	/* pre: hasNext()
	 * post: return head of iterator; do not change this
	 */
	public Object peek();
	
	/* pre: none
	 * post: return a iterator which is equal to this
	 */
	public OOPIterator cloneMe();
}