To create a lifecycle module is to configure a customized class that implements the com.sun.appserv.server.LifecycleListener interface. You can create and simultaneously execute multiple lifecycle modules.
The LifecycleListener interface defines this method:
public void handleEvent(com.sun.appserv.server.LifecycleEvent event) throws ServerLifecycleException
This method responds to a lifecycle event and throws a com.sun.appserv.server.ServerLifecycleException if an error occurs.
A sample implementation of the LifecycleListener interface is the LifecycleListenerImpl.java file, which you can use for testing lifecycle events.