Array length after split

Question

Why array length = 3
https://code.sololearn.com/cEzP6U3oM0rO/?ref=app

Answer 1

I think it makes the rest of the string after the last dot which is "" as a place in the array

Answer 2

Add this to the end of the code and see the result:
for (String s : a)
System.out.println (s.equals (""));
The output will be:
False
False
True