Hi -
Short answer: No
Longer answer:
1) You can call into a native (unmanaged) .dll with
Java JNI
2) You might consider Web Services for your
JSP's (typically on a web server) to communicate with .Net applications (assuming the relevant functionality is available as a web service)
3) Finally, there are many third party "bridges" that allow interoperation between Java, COM/ActiveX and .Net.
'Hope that helps .. PSM