Apologies, demo nerves got to me. I incorrectly said in the video that Java was announced as a language for web sites, it wasn't. What I was thinking of was the ability to use Java with cloud services. Chalk it up to nerves in front of a large audience. For more information on using Java with Azure, visit http://www.windowsazure.com/en-us/develop/java/
Kirk Evans is an Architect for the Windows Azure Modern Apps Center of Excellence for Microsoft Corporation, and a Microsoft Certified Master for SharePoint 2010.
The accompanying blog post for this session can be found at http://blogs.msdn.com/b/kaevans/archive/2014/03/04/building-sharepoint-2013-apps-with-windows-azure-paas.aspx. Includes a detailed walk-through of the code as well as an attachment that includes the source code.