Flex

Flex is a lively technoloy for delivering enterprise Rich Internet Applications.

Using this we can make awesome Web componets.Java has a very strong serverside strength.But still it lacks in presentaion layer..depending only on HTML components(.NET has ASP.NET server controls which has better look and feel).Using this we can make very beautiful(i was impressed when i saw flex examples)presentation layer in java.
The followig like shows how we can make use of this technology in JSP(using structs)

Learn..