Velocity

If u want to learn most interesting framework in java use the following link..
These webframeworks force the programmer to follow the MVC architecture and also convert the HTML designer into firstlevel programmers..

But nearly 'n' number of frameworks are there in JAVA..who is going to become a master in all?
I tested out these two frameworks.
a)WebMacros
b)Velocity..
both are looks good..

Complete example for developing a Framework using Velocity