@Override public void start() throws Exception { // add listeners listeners.clear(); addListener(new UpdateCheckLoggingListener()); Map<String, Object> serviceSpecificObjects = serviceContext.getServiceSpecificObjects(); Object managementListener = serviceSpecificObjects.get(MANAGEMENT_UPDATE_CHECK_LISTENER); if (managementListener != null && managementListener instanceof UpdateCheckListener) { addListener((UpdateCheckListener) managementListener); } for (UpdateCheckListener listener : listeners) { listener.setUpdateCheckService(this); } scheduledTasks = scheduler.scheduleAtFixedRate(new UpdateCheckTask(this, versionServiceUrl, productName), 0, 7, DAYS); }