Java Generics: List, List<Object>, List<?>

Answer 1

To complement the tutorials mentioned by Rob, here's a wikibook explaining the topic:
http://en.wikibooks.org/wiki/Java_Programming/Generics

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Edit:

1. No restrictions on type of items in list

2. Items in list must extend Object

3. Wildcard used by itself, so it matches anything

Would it be naive of me to conclude at this point that there's hardly any/no difference at all?