About Question enthuware.ocpjp.v7.2.1531 :

[ETS User]

I disagree, because method throw NullPointerException which is a subclass of RuntimeException. So can not any Throws any RuntimeException

[admin]

I am not sure I understand your point but any method can throw any RuntimeException without declaring it in the throws clause.

HTH,
Paul.

[renatumb]

I disagree, because method throw NullPointerException which is a subclass of RuntimeException. So can not any Throws any RuntimeException

It can throw any "UNCHECKED EXCEPTION ", such as any RuntimeException or Error

[Wisevolk]

Hello,
just to refresh, in overriding return type MUST be the same (or covariant) and in overloading return type MIGHT be another type.
Can you confirm please.

[admin]

Yes, that is correct.

[jagoneye]

More importantly this question seems more appropriate to be of the Section Exception and Assertion rather than Overriding I think.