Enthuware

Hi,

What does means Option:

If passed a null, it should return false.

I assume it could be right answer, as

For any non-null reference value x, x.equals(null) should return false.

Yes, it is the right option.

'For any non-null reference value x, x.equals(null) should return false.' is what the explanation says. The reason i chose 'none of the above' was because i was thinking on what if the object it is called upon is null as well. Now that i am thinking of it, if x==null, x.equals(null) would throw a NullPointerException? is that what happens? Would you care to expand the explanation a bit to cover this case?

As the explanation says, x.equals(null) should return false.
It will not throw NPE because you are not invoking any method on null.

You may try it out as well.