Question about extending the screen object

Hi!

On my site I have several screens that I want a certain specific java-coded
behavior for. I see in the documentation that the way to do this is to
create a Super-Screen class and let all my other screens extend that one.
However, if I don't want to implement any other behavior in the screens this
means that I will have several java classes with an empty body, all they do
is extend my Super-Screen. 

Is this the way to do it or is there any way around this so I do not need to
create one class for each template?

 

Or rather, can FooTemplate.vm execute the code in BarClass.class?

/Ludwig