Patrick M. [https://community.jboss.org/people/patsinnervoice] created the discussion "Event Handling between two EJB-JARs (Observer Pattern?)" To view the discussion, visit: https://community.jboss.org/message/783044#783044 -------------------------------------------------------------- Hi, I'm new to EJB development and currently search for the best/correct way to handle events between two EJB-JARs which are in one EAR. I tried to use the Observer Pattern. The event gets fired in BeanA but does not reach BeanB (as stated, two different EJB-JARs = two different Eclipse Projects in one Workspace / EAR). My Code currently looks kind of like this: @DependsOn("BeanB") @Startup @Singleton @WebService public class BeanA implements BeanARemote, BeanBLocal{             @PersistenceContext           private EntityManager em;             @EJB           private BeanA beanA;           public void listenToReceivedEvent(@Observes ReceivedEvent events){           Query query = em.Query("some query");           //implementation         } }   @Singleton public class BeanB implements BeanBLocal {              @Inject           Event<ReceivedEvent> events;             public void fireEvent() {                //implementation                ReceivedEvent e = new ReceivedEvent(stringList);                event.fire(e);           } }   public class ReceivedEvent  {             private List<String> stringList;             public ReceivedEvent(final List<String> stringList) {                     this.stringList= stringList;           }               public List<String> getStrings() {                     return stringList;           } }   Currently, when on BeanB the event is fired at BeanA nothing happens. My question now is: is the Observer Pattern the correct pattern in this case? Did I forgot something in this sample why the BeanA does not gets the event? Is the Observer Pattern made for event communication between two differen EJB-JARs? Thanks -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/783044#783044] Start a new discussion in EJB3 at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]