Java service error after moving code from One server to another..

Hi All,
I copied java service from one server to another server.
while running java service i am getting this error.
com.wm.app.b2b.server.ServiceException: [ISS.0026.9102] Service is not operational. To run this service, first recompile the Java source
How to recompile the java source.

Thanks.

Sorry for extra thread.
Got it…From this thread
http://www.wmusers.com/forum/showthread.php?14884-Error-Compiling-Java-Service-in-wM6-1-ISS-0026-9102