Run .jar on server with php

I made a .jar that edits a pagename.html file based on a .txt file located in the same folder. Idea is that I (as webmaster) make changes to the .txt file and then, when someone visits my web page, a php code runs the .jar that edits the pagename.html, so when the user goes to pagename.html it will appear updated, based on what I wrote on the .txt file. Is this possible? How?