8.12. Adding an AgendaEventListener

The following code snippet shows how a simple agenda listener is declared and attached to a session. It will print activations after they have fired: 
ksession.addEventListener( new DefaultAgendaEventListener() {
   public void afterActivationFired(AfterActivationFiredEvent event) {
       super.afterActivationFired( event );
       System.out.println( event );
   }
});
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