public static void main(String[] args) throws Exception { MBeanServer mbs = MBeanServerFactory.newMBeanServer(); ObjectName relSvcName = new ObjectName("a:type=relationService"); RelationServiceMBean relSvc = JMX.newMBeanProxy(mbs, relSvcName, RelationServiceMBean.class); mbs.createMBean("javax.management.relation.RelationService", relSvcName, new Object[] {Boolean.TRUE}, new String[] {"boolean"}); final BlockingQueue<Notification> q = new ArrayBlockingQueue<Notification>(100); NotificationListener qListener = new NotificationListener() { public void handleNotification(Notification notification, Object handback) { q.add(notification); } }; mbs.addNotificationListener(relSvcName, qListener, null, null); RoleInfo leftInfo = new RoleInfo("left", "javax.management.timer.TimerMBean"); RoleInfo rightInfo = new RoleInfo("right", "javax.management.timer.Timer"); relSvc.createRelationType("typeName", new RoleInfo[] {leftInfo, rightInfo}); ObjectName timer1 = new ObjectName("a:type=timer,number=1"); ObjectName timer2 = new ObjectName("a:type=timer,number=2"); mbs.createMBean("javax.management.timer.Timer", timer1); mbs.createMBean("javax.management.timer.Timer", timer2); Role leftRole = new Role("left", Arrays.asList(new ObjectName[] {timer1})); Role rightRole = new Role("right", Arrays.asList(new ObjectName[] {timer2})); RoleList roles = new RoleList(Arrays.asList(new Role[] {leftRole, rightRole})); final int NREPEAT = 10; for (int i = 0; i < NREPEAT; i++) { relSvc.createRelation("relationName", "typeName", roles); relSvc.removeRelation("relationName"); } Notification firstNotif = q.remove(); long seqNo = firstNotif.getSequenceNumber(); for (int i = 0; i < NREPEAT * 2 - 1; i++) { Notification n = q.remove(); long nSeqNo = n.getSequenceNumber(); if (nSeqNo != seqNo + 1) { throw new Exception( "TEST FAILED: expected seqNo " + (seqNo + 1) + "; got " + nSeqNo); } seqNo++; } System.out.println("TEST PASSED: got " + (NREPEAT * 2) + " notifications " + "with contiguous sequence numbers"); }