How to call the C/C++ functions in Java

Hi,
We have well written business API functions in C/C++.We have to use the functions in our Java programme using JNI.We do not have the rights to change or modifiy the already existing C/C++ functions,but we can create any kind of proxy implementation for the existing functions and call the programme from Java.Is it possible to do that using JNI ?? .Then how we will do that??
Kindly suggest me (examples or best tutorial links).
Thanks and Regards
LAL

1. I suggest you do a google search for "wrapper jni generator".
(If you search back through this forum you will see that lots of people have asked how to get wrappers for existing libraries. )
2. If you have a small number of functions you want to call, then you can write a wrapper dll by hand, matching the JNI inreface requirements. The Sun website has a tutorial on JNI, including creating wrappers.

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