[staykovmarin]

Code:

Reader r = new Reader();
r.getString();

Thats in your test01 file of course. Thats called creating an instance of a class.

edit:
I misread your code, i didnt notice that getString was static:

Code:

Reader.getString();

However that wont work, since the line:

Code:

private static BufferedReader stdin =
new BufferedReader( new InputStreamReader( System.in ) );

will never be executed, stdin is going to be null.