About Question enthuware.ocajp.i.v7.2.850 :

[Matheus]

Pay attention on this question: Identify the correct statements about ArrayList?

One of the "correct" answers is: You can sort its elements using Collection.sort() method. If you read this carefully, you'll notice that it says that Collection has a sort() method, but Collection is an interface. The correct sentence is:
You can sort its elements using Collections.sort() method.

Thanks

[admin]

You are right. This has now been fixed.

thank you for your feedback!