Hi Friend,



java.io.*;

means at the time of compile,compiler add the libraries of Input and Output.Then it will complile the program.



After on wards we will get the XXXXX.class

We can run the .class any where(PlateForm).



If u need any thing extra

anand853@gmail.com

We (most of us, anyway) are not here to hand-hold you through your first step with Java source code semantics (or even such fundamentally basic OOP concepts such as "class"). I'd recommend you go over to here instead and start reading things right from the top. Be prepared to spend at least a couple of evenings. Maybe someone else can give a link to OOP basics, if they feel bothered enough.