File upload with JSF.....

[gbattine]

Hi,
i'm a new user of java. I have a question. I have to develop a JSF
application that make user able to:

1) Upload a txt file
2) Showing to user columns and rows numbers of file.

For this second operation i'have developed a java application that
receive a txt file from a BufferedReader and counts rows and columns
number.
My questions are:

1) How can i realize file upload with JSF?
2) In which format a file is uploaded?
3) Can i use my java application for counting rows and columns number
of file?

Can you help me?Please use easy concepts because i'm inexpert.....