I think I have generated the sis file successfully, but when I installed it on Nokia 9210i, a "Loding Java" and "Starting Java" baloons appered up then disappeared without any response, I am trying to run the application on the Emulator of 9210i, I have successfully installed the application and run it on the communicator, but when I tried to run it with Java runtime in debug mode in the emulator, the following message fired up:

Unable to initialize threads: cannot find class java/lang/Thread
Could not create the Java virtual machine
Exit value: 3

I think I have some wrong fits with the classpaths or some thing, but I do not know where exactly my mistake is, I have tried lot of solutions.

Any help please!