[xwiki-users] XWiki java client authentication

Hello, I need to write a small Java utility to interact with my XWiki server - it's main purpose is to take a file containing paths to various files, and then upload (POST) them to the server. It looks as though this cannot be done from within the browser directly since sandboxing prevents working with file paths directly. Having read through the RESTful client information (http://platform.xwiki.org/xwiki/bin/view/Features/XWikiRESTfulAPI) I am not sure I need to completely go down this route as I don't need access to representations of the XWiki objects. AFAICS I will simply need to GET and POST to specific URLs of the wiki. However, I would greatly appreciate advice on how best to handle authentication. Guest users are not allowed, so username and password should be provided, and in some way a session needs to be maintained. Are there any simple examples for logging in to XWiki and maintaining a session from within a Java client? I'm wondering if I still might need the RESTful API for this, but the documentation doesn't really cover this in detail. Thanks, Bryn