title: Synchronize application calendar with google calendar
body: <p>I have a java web application where every user has own simple calendar. Now I want to add feature that user can add all events from my application into his calendar, for example google calendar, but I want support Yahoo calendar too. I was trying to find some way how to do it, but I found only one lib (<a href="http://code.google.com/p/caldav4j/" rel="nofollow">caldav4j</a>) which does not have any useful example or tutorial and as far as I know it uses obsolete library <a href="http://jakarta.apache.org/slide/webdav-client.html" rel="nofollow">slide</a>. Is there anything different what can I use?</p>