Arnab Ghosh [https://community.jboss.org/people/arnosgh] created the discussion "Exception thrown while @Timeout is invoked" To view the discussion, visit: https://community.jboss.org/message/746747#746747 -------------------------------------------------------------- Hi All, I have implemented a statlessBean with Timer service. The timer is getting created without any issue, but when the @Timeout method is getting invoked I am getting the below excetion: ERROR [org.jboss.ejb.txtimer.TimerImpl] (EJB-Timer-ee98a936-c65a-4bbb-b697-93f88ca37f1c[target=jboss.j2ee:ear=app.ear,jar=app.backend.jar,name=AssetCreationCompleteTimer,service=EJB3]) Error invoking ejbTimeout java.lang.NullPointerException         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)         at java.lang.reflect.Method.invoke(Method.java:597)         at org.jboss.aop.joinpoint.MethodInvocation.invokeTarget(MethodInvocation.java:122)         at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:111)         at org.jboss.ejb3.stateless.StatelessContainer.callTimeout(StatelessContainer.java:682)         at org.jboss.ejb3.stateless.StatelessContainer.callTimeout(StatelessContainer.java:199)         at org.jboss.as.ejb3.timerservice.TimedObjectInvokerBridge.callTimeout(TimedObjectInvokerBridge.java:44)         at org.jboss.ejb.txtimer.TimerImpl$TimerTaskImpl.run(TimerImpl.java:664)         at java.util.TimerThread.mainLoop(Timer.java:512)         at java.util.TimerThread.run(Timer.java:462) My looks like: @Stateless @LocalBinding(jndiBinding = "com.app.backend.maintenance.AssetCreationCompleteTimerLocal") public class AssetCreationCompleteTimer implements AssetCreationCompleteTimerLocal {   @PersistenceContext(unitName = "unitName")   private EntityManager entityManager;   @Resource(mappedName = "java:/JmsXA")   private QueueConnectionFactory queueConnectionFactory;   private final Logger log = LoggerFactory.getLogger(getClass());   @Resource   private SessionContext sessionContext;   @Override   public void scheduleNextExecution(Date dateToExecute, boolean isCancelExisting) {     TimerService timerService = sessionContext.getTimerService();     for (Object o : timerService.getTimers()) {       if (o instanceof Timer) {         Timer timer = (Timer) o;         // if current Date is greater than or after the existing timers next run date, cancel inactive timer         if (new Date().after(timer.getNextTimeout())) {           timer.cancel();           continue;         }         // if date to schedule next run is less than or before the existing timers next run date, cancel the current timer         // only if isCancelExisting is set to true. This done to ensure that timers don't get re-scheduled on an earlier date unless specifically intended.         if (dateToExecute.before(timer.getNextTimeout())) {           log.info(String.format("%s job is already scheduled for %tc", getClass().getSimpleName(), timer.getNextTimeout()));           if (isCancelExisting) {             log.info(String.format("Cancelling the timer for %s which was scheduled to run at %tc ...", getClass().getSimpleName(), timer.getNextTimeout()));             timer.cancel();           }         }       }     }     if (timerService.getTimers().isEmpty()) {       log.info("Creating Timer with Date {} : Class {}", dateToExecute, getClass().getSimpleName());       timerService.createTimer(dateToExecute, null);       log.info("Timer created for Class : {}", getClass().getSimpleName());     }   }   @Timeout   public void onTimeOut(Timer timer) {     log.info("Timeout triggered ....");     Calendar nextRun = Calendar.getInstance();     nextRun.add(Calendar.MINUTE, 0);     nextRun.add(Calendar.SECOND, getExecutionIntervalSeconds());     //String message = String.format("Next execution scheduled for %tc", nextRun);       log.info("Starting execution of {}", getClass().getSimpleName());       execute(); // exceute logic   } } My application is deployed in JBOSS 5.1. Please help. Regards Arnab -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/746747#746747] Start a new discussion in EJB3 Development at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]