This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Ordered collections are collections in which the items you add to the collection are maintained in the order you add them to the collection. Sorted collections are collections in which the items are maintained in a sort sequence of some type (either their natural sort sequence or a supplied sort sequence). The first group contains the List classes and the second group contains the Set classes.