Graceful clean up of daemon process

[Justin Chu]

If my daemon process does not have a remote hook, such as RMI/JMX, that can signal it to shut down gracefully, what is the next best way to do some clean up before the JVM terminates?

This process have several daemon threads that may still be working. If there's some clean up hook that can be registered to the JVM, is there a limit on how long can the clean up code runs before the OS kills the process?

The process is likely to be terminated by "ctrl-c" or linux "kill" command.

[Keith Lynn]

Look at the method addShutdownHook in java.lang.Runtime.