How do you use Python with C and Java simultaneously?
For C, you can use ctype module or SWIG.
For Java, Jython is a good choice.
Edit<<<<<<<
The question is:  
-How do you launch C code from python? (say, in a function)
-How do you load Java code into python? (perhaps in a class?)
-Can you simply work with these two in a python program or are there special considerations?
-Will it be worth it, or will integrating cause too much lag?  
Being familiar with all three languages (C, Java and Python) and knowing that Python supports C libraries, (and apparently can integrate with Java also) I was wondering if Python could integrate a program using both languages? 
What I would like is fast flexible C functions while taking advantage of Java's extensive front-end libraries and coordinating the two in Python's clean, readable syntax.
Is this possible?
EDIT---->
To be more specific, I would like to write and execute python code that integrates my own fast C functions. Then, call Java libraries like swing to create user interface and handle networking. Probably taking advantage of XML as well to aid in file manipulation.