IS 601 Client C API with JVM 1314

I want to know if there are anyone using webMethods IS 1.6.0 Client C API with JVM version other than 1.1.x? Use of Inetgartion Server C API with JVM 1.3.x or 1.4.x that uses JNI. If theer are users what platform their C API code client is running?
Thank you in advance