Hi list, is there a specific reason Stack is extending from LinkedList, instead of using a LinkedList internally? To me, it seems that the protocol that LinkedList, SequenceableCollection, ... provides is not the protocol you expect from a Stack? Any thoughts on this? Kind regards, Bart -- imagination is more important than knowledge - Albert Einstein Logic will get you from A to B. Imagination will take you everywhere - Albert Einstein Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning. - Albert Einstein The true sign of intelligence is not knowledge but imagination. - Albert Einstein However beautiful the strategy, you should occasionally look at the results. - Sir Winston Churchill It's not enough that we do our best; sometimes we have to do what's required. - Sir Winston Churchill