HTTP is very easily the most important standard in server-side Java. The much awaited HTTP/2 standard is now complete, was fifteen years in the making and promises to radically speed up the entire web through a series of fundamental protocol optimizations. Slated to be a part of Java EE 8, Servlet 4 is the primary vehicle for making HTTP/2 available to the server-side Java ecosystem. In a key JavaOne 2016 session Servlet 4 specification leads Ed Burns and Shing wai Chan discussed Servlet 4 in detail. You can view the video below on the JavaOne 2016 YouTube playlist (click here if you can't see the embedded video). The slide deck for the talk is available here.