In Python plugin, Autocomplete of Java methods is missing parameter info

I'm using IntelliJ IDEA 15.0.3 with Python plugin 5.0.2.143.121, and the Jython 2.7.0 interpreter.

In a python file, I've imported some Java library classes.

I can get the autocomplete list to come up for the Java object, but the method parameters are missing from the autocomplete list.  See screenshot:

And, when I put the cursor within the method parenthesis and try Alt-P to display parameter info, it shows nothing.  See screenshot:

Is it possible to get Java library method parameters to display in auto-complete and parameter info from within the python plugin in a python file?