Is possible to interacts Java and Firefox add-ons with JavaXPCOM or with another way?

Hi!

I'm trying to open a firefox add-on and manipulate it with Java, for
example: Open the Firebug add-on, get its results and generate a
report with these results.

But until now, I haven't got any encouraging result.

A forum user told me that JavaXPCOM can do that, but I'm reading its
document and the only thing I've found is that JavaXPCOM is used to
create add-on, not to manipulate an add-on.

Does anyone know how can I open a plugin, get its results and
manipulate these results?

Can JavaXPCOM help me doing that?

How can I do that?

Does anyone have an example?

Any answer given to me will help me so much, specially the answer of
the question "Can JavaXPCOM help me doing that?".

Tks for the attention.

Rafael