[Wrapper-user] Java Service Wrapper will not start my program

[Sue E. <sue...@ic...>]

Windows 2000:

I have a java program which works fine on its own but won't work properly
with the wrapper, either as a console or service.

The program has a main method which starts two new daemon threads. One
thread runs many timer tasks, the other waits for incoming snmp traps on
port 162. The main method then sleeps for a few seconds in an infinite loop.

Running as a console, the program starts OK, creates the new threads and
then sleeps OK (I've got lots of logging so I know this is happening). The
problem is that after some seconds I get the following messages

wrapper  | Startup failed: Timed out waiting for signal from JVM.
wrapper  | Java Virtual Machine did not exit on request, terminated
wrapper  | JVM was only running for 31 seconds leading to a failed restart
count of 1

It then restarts and the whole process is repeated. If I do CNTL+C I get
this

wrapper  | CTRL-C trapped.  Shutting down.
wrapper  | wrapperStopProcess(0) called.
wrapper  | Sending stop signal to JVM
wrapper  | Shutdown failed: Timed out waiting for signal from JVM.
wrapper  | Java Virtual Machine did not exit on request, terminated
wrapper  | <-- Wrapper Stopped

There is almost nothing else running on my system - task manager shows the
system idle process using 95%+ of CPU.

It appears that the wrapper is unable to communicate with my JVM even though
it has started it successfully. I assume I have done something stupid but
can anyone tell me what?
Thanks, Sue Emery