Should I extend ArrayList to add attributes that isn't null?

Question

I would like to add a collection of objects to an arrayList ,only if the particular attribute is not null.

I am thinking of extending the ArrayList and implementing

Answer 1

If you would like to enforce this I don't see why not (although you should check the return value of the add method whenever you do add to make sure that it succeeded).

This is a good way to get rid of that redundant logic which may or may not stick around in later software iterations.