There are was to mix C++ and Java code. One way I am somewhat familiar with is to use a glue like language like Python. You could write some objects in java, others is c++, c, or whatever language, and use Python to glue them together. Here is a
link to an article on how Python does it.
There is also a program called Jython that you could use Pythons interpreter embedded inside of java apps.
[ February 12, 2004: Message edited by: Philip Herzer ]