[Wrapper-user] Registering application's shut down hook ...?

[Yasir K. <yas...@as...>]

Hi,

"If the application has registered its own shutdown hook, it will be invoked, giving the application a chance to shutdown cleanly. If on the other hand, a shutdown hook is not registered, then the application will suddenly exit." 

Above text is taken from the integration method-1 introduction. I just want to ask that what is meant by registering shut down hook and how can a JAVA application register its own shutdown hook, so that it could be invoked using integration method-1?. Thanx.  

Best Regards,
Yasir Khan