JNI HELP

[sureshnarsimhan]

Hi,

I encountered a problem when trying to load a java class from a c++.

I have two DLLs say A and B, each of which loads the java VM to execute a java function. (Each dll loads up a different java class to execute its function).

I have an EXE from which I am trying to load both the DLLS, A first and B second (to invoke appropriate java function)

The EXE Loads up DLL A first, the A DLL successfully loads the JAVA VM and makes the call to appropriate function.


When I am trying to do the same the second time from B, the call

ifn.JNI_CreateJavaVM(&m_virtualMachine, &m_environment, &m_virtualMachineArguments);

returns a negative value in the second DLL B.( Loading the VM from the first DLL works fine, when I try to the same for a second time from DLL B it fails)


I have destroyed the java VM by calling

m_virtualMachine->DestroyJavaVM();

in both the dlls.




I tried calling

JNI_GetCreatedJavaVMs(&m_virtualMachine,(jsize)1,&nVMs);

AttachCurrentThread((void **)&m_environment,thr_args);

In the Dll B.

This constructs the VM but fails in the findClass method( FindClass( class_name ); returns null value;)

What should i do load the java VM twice from two seperate Dlls??

Thanks in advance,

Suresh.n