Can C++ routines be called from Java program

[gkk]

Hello,

I'm sorry if this is a dumb question, but can C++ code/libraries be called within a Java program?

I'm using Matlab for scientific computing, and a special option may be purchased that outputs an .so file, which can be used as a shared library for standalone C++ code. I wonder if a Java program can access and use such a file?

Matlab provides the ability to port to Java directly but it's another $4000 option that I'd like to avoid if possible using the above scheme.

Thanks in advance, -Gkk

[Zack]

It's not a dumb question, not whatsoever.

Here's a couple links for you to look at; unfortunately I've never done it myself but these look to be exactly what you need.
Integrating Native Methods into Java Programs
Java Tip 17: Integrating Java with C++ - JavaWorld
How to Access C++ from Java | Javalobby

Best of luck!

[Tolls]

Oracle have an oldish tutorial on JNI.
I don't think it's changed significantly since then, but I haven't used it much so can't guarantee.