how to find the length of a set? [closed]

Question

I'm trying to find the lentgh of a set from a preference. I tired set.length, but it doesnt work. Anyone know another way to find a length of a set?

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

Answer 1

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