Enthuware

Here, list2 is a list of any thing. You cannot add any thing to it and you can only retriev Objects from it:

I am sure you mean you can add anything to it? not cannot?

No, the given comment is correct.

list2.add(new Object());
and
list2.add("aaa");

will not compile.

HTH,
Paul.

But you can add null though, yes?

Yes, null can be added. It has now been added in the explanation. Thank you for your feedback!