Parece que o jython vanilla install (em 17.04) não possui alguns pacotes
Jython 2.5.3 (, Sep 18 2017, 05:43:55)
[OpenJDK 64-Bit Server VM (Oracle Corporation)] on java1.8.0_131
Type "help", "copyright", "credits" or "license" for more information.
>>> import javax
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named javax
Como instalar estes?