Quick help please? College money on the line.

[xaint]

The details aren't too important, but could anyone explain exactly what it is that I'm being asked to know? I'm supposed to make and display a function array list and linked list which I will probably be able to do, but I don't understand what he wants here:

-Use of generic typing with ArrayList and LinkedList
-Use of enhanced for loop versus iterator for tranversal of ArrayList and LinkedList

I have not done java in a long time, so if this is common knowledge I need some refreshing.

Thanks