Accessing a xml file and updating it in Java

[ProfessorC]

Is it possible to write a little \[code\]Java\[/code\]a program which parses a xml file from my web hosting site and updates this file? Or is there a better alternative to do so? I have to update the file every 10 min with about 10 lines of code each, so I don't want to write it out every time.