I want to learn JNI , please suggest me some basic guide.

You should go for the book - Java Native Interface (Programmer's Guide and Specification - Addision Wesley).

> want to learn JNI , please suggest me some basic guide.

If you are doing it for fun, refer to the links posted above. But if you actually plan on writing a *real* application which requires interfacing with native code with the least possible fuss, try out some of the high level JNI wrappers and their likes out there.

JNA and Swig are few of them.

Thank You Friendz Especially Ezzaral.