How to find the length of the set?

Question

I am trying to find a set item from preference. I am tired of set.length, but it does not work. Does anyone know another way to find the length of the set?

set = prefs.getStringSet("key", null); int X = set.length; //it doesn't like length.... 

Answer 1

I believe instead of set.length, you want to call set.size()

Answer 2

Your set is Set<String> , not String[] . Therefore you need to call:

 int x = set.size();