Struts - A framework of choice when it comes to the point where one
has to work on a web application with a mind set for achieving
far greater degree of manageability, extensibility, clear separation
of concern and many more.

Struts has be arround for many years, and it has matured enough to
address many diverse concerns of typical software development cycles.

Some of the concern I faces while working with Struts 1.0 was to find
a way for testing project specific action class, actionform class,
validators etc. But in Struts 2, unit testing is not any more a concern
, as every class is a POJO.