this is hardly a newbie question. You answer is JNI, but when the subject is AIX, you will need some research. I have found some good
stuff. For more, make a search with "Java JNI AIX" to see what comes up.
there are also alternative libraries for native access, such as
JNA. check it out. One more thing, there is a commercial library called "JNI wrapper" as far as i know they have Solaris support, i wonder if i applies to AIX too. check it
here.