First, thank you for taking your time and reading this :)
Greatly appreciate it.
So what i am trying to do is accessing the files from the iPhone through iTunes.
If you dont understand what i mean with this, check out i Explorer and iFunBox.
I only intend to read the files from the Documents folder inside an app.
It is completly possible without jailbreak (iExplorer and iFunBox did it :P ).
I don't mind if it is java code or not (import java.io.*;).
Jus a little help or a little step can be usefull.
Why i want to achieve this:
      The idea behind this is live editing on either pc or iphone through the connection cable.
      For example a game like Minecraft Pocket Edition saves every block you place directly in it's file chunks.dat
      It would be cool if you could edit something big with the pc and do all the fine editing with the phone :)
 
I hope you accept the challange in helping me :P
Thanks again