"Error: uncaught exception: java.lang.reflect.InvocationTa rgetException"

hi all,

I'm trying to run a very simple java program from a Firefox extension.

When I run the java code as standalone I do not get the exception. Maybe
there is something wrong in my js file.

I am getting a "Error: uncaught exception:
java.lang.reflect.InvocationTargetException"

In order to work out what I'm misunderstanding/doing wrong I'd be really
grateful if someone could show me how to solve the problem ?

 

Thanks a lot!

Stefan