Perform testing of your application as in any standard eclipse web project.
And,
And,
And finally,
After your application server has started, goto URL:
http://localhost:8080/HelloWorld/index.action
Click "Go to hello world":
Click "Go to close session":
Congratulations! It works (hope so ;) ).
You can then follow step 6 to understand how to catch URL parameters, and hos to setup some interceptor-ref in individual actions.