Coaching to authorize Java desktop app publishing on Facebook (OAuth)

We have a Java desktop application (running on Windows) that needs to post newsfeeds on users' facebook profile (using publish_actions rights). The Java code is already fully written (see file in attachment) and used to work a couple of months ago with Facebook test user. The project consists into spending an hour or two with us (on skype using "share screen") to adjust our application configuration (on [login to view URL]) and potentially the java code (getAccessToken() method) so that it works based on the new facebook approach (which seems to have changed the last months). Success criteria is that posting (from the java windows desktop app) works and that the applications' submission for approval gets accepted by Facebook. Important to note that the application will not be registered in the windows app store. Fast success (less coaching hours to reach success) will be rewarded fairly. As project deliverable will be solely a coaching session, it is key that, beyond good Java and Facebook authentication knowledge (for desktop apps), the freelancer also speaks well english or french.