Java Scanner with InputStream not working

Question

I am reading an InputStream (fis) from a source and on which I have to do some multiple search. I am using Scanner class and I instantiate it after every search. But it works on

Answer 1

The second print is returning zero.

Because you've already read the stream to EOS counting lines the first time. So when you do it again there are zero lines left to count, so you get zero.

Working as designed.