Avoid null in java.util.List...?

Question

Dear friends,
Is there any way to avoid null values in java.util.List<E>.....?
Means any special class(in java.util) is available for avoiding null values....?
Thank you
boss134

Answer 1

boss134 wrote:
Dear masijade.,
i got the class.... using java.util.concurrency.ConcurrentSkipListSet to we can avoid null
Thank you
boss134I didn't say to open the API docs index, then search for the word List. I said look at the API docs for the interface List. It sill list the Classes that implement it. Look at those Classes, and see if any of the add methods will "prevent null" (as you seem fond of saying). But this is getting to be a little old, so I'll just tell you, no, there isn't. If you absolutely must have one, then, as Darryll suggested extend one of the current list Classes and override add, addAll, and (to be certain) the varying get methods (so that they don't return any null items, if, somehow or another, a null managed to finagle it's way into the List).
Edit: Or, as suggested in the other thread, which is better, implement the interface directly, delegating calls to a "wrapped" List.