Collections.emptyList() instead of null check?

Question

If I have a rarely used collection in some class which may be instantiated many times, I may sometimes resort to the following \"idiom\" in order to save unnecessary object crea

Answer 1

emptyList() doesn't allocate an object each time.

I would create less of the object which contains the List so you can create the list every time.

What you can do is

private List