Create a Forum website

I am new to Xwiki . My requirement is given below.

I am creating a website like general " forum website" to post a query and get an aswer.

1. Once I Post a query, it has to send a email to a group say like ' From email is : xxx@abcdef.com and To email is zgroup@abcdef.com". If anybody reply through email then that reply should reflect in the forum website.

a) To read a email, I have written a Java Mail client program which will pick up all the messages sent to 'xxx@abcdef.com' . Then read the messages and put in to a particular directory.
b) Another program (may be Java or Velocity script or Groovy script) has to read that folder and update the forum page.

My doubt is whether that logic is okay or not. Then I need a answer or code for the question (b)

Any kind of suggestion or feedback or code would be much appreciated.

Thanks
by
Pandiarajan.J