Jython

hi..im trying to call the PythonInterpreter() from within a java app, and
run a python program.Since Python does not have *native* support for
interfaces, what can I do after importing a java interface? Also,when I
import code from java that does use interfaces(for e.g. Vector implements
List,Map etc),the following code
	from java.util import Vector
	sim=Vector
	sim.addElement("first.py")
throws an error TypeError: addElement(): expected 2 args; got 1

so what do I typecast the first argument to?
	sim.addElement(Vector,"fist") 
gives TypeError: addElement(): self arg can't be coerced to (well, it
doesnt say what...)

any help would be appreciated :-)

ciao