Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
ICEfaces is designed to work with Java EE servers, encapsulating Ajax calls. ICEfaces is based on the JavaServer Faces standard, it extends some standard components supplemented with in-built Ajax. ICEfaces allows partial submits. It also provides "Ajax Push", a variant of Comet capability, that can update the DOM of a web page from the server-side.