JAVA to COM Bridge?

Question

Hello!
For the past few days I was searchng for JAVA to COM bridge. I have a dll file from third partry that contains just LOTS of classes and methods and I need to work with it from my java application.
I have found a few solutions.
1. IBM Java interface toolkit (very expensive 1000usd per licence)
2. JACOB Project
3. Integra (also very expensive but cheaper than the one from IBM)
I was able to install and try interga. Works perfect. But I do not have a budget to purchase it.
I was not able to figure out how JACOB works. And was not able to find a solution to my broblem on Yahoo JACOB mailing list.
Is there a JAVA to COM bridge from SUN??? I cannot believe SUN does not provide one.
Please advise me. Please

Answer 1

I think I start figuring out how NJAWIN works.
I was able to load my dll host file and run couple of commands. But only that! no more. I am really having difficult time to figure out how it works. But the hope is there. It works.
According to UML my dll file has a class HostSession and that class has a method Send(); UML does not say that this method expects parameters.
Generated by JAWIN java class says that method Send in HostSession class DOES Expect two parameters:
public HostResponse Send(ObjectRef HostCommand, ObjectRef Transmit) throws COMException {
return new HostResponse((DispatchPtr) invokeN("Send", new Object[]{HostCommand, Transmit}, 2));
I can assume that HostCommand is a command that needs to be processed! but what is Transmit?
Is there any support forum for NJAWIN where people who work with NJAWIN share their experience? and even when using NJAWIN I still get this JAVA.EXE Error! memmory cannot be read.