For more information on web applications, see:
The JavaServer Faces 2.0 specification:
http://jcp.org/en/jsr/detail?id=314
The JavaServer Faces web site:
http://java.sun.com/javaee/javaserverfaces/
The Java Servlet 3.0 specification:
http://jcp.org/en/jsr/detail?id=315
The Java Servlet web site:
http://java.sun.com/products/servlet