All of the answers seem to be missing the fact that you may need to complete some portion of work in coordinated fashion during graceful shutdown (for example, in an enterprise application).
@PreDestroy allows you to execute shutdown code in the individual beans. Something more sophisticated would look like this:
@Component
public class ApplicationShutdown implements ApplicationListener<ContextClosedEvent> {
@Autowired ... //various components and services
@Override
public void onApplicationEvent(ContextClosedEvent event) {
service1.changeHeartBeatMessage(); // allows loadbalancers & clusters to prepare for the impending shutdown
service2.deregisterQueueListeners();
service3.finishProcessingTasksAtHand();
service2.reportFailedTasks();
service4.gracefullyShutdownNativeSystemProcessesThatMayHaveBeenLaunched();
service1.eventLogGracefulShutdownComplete();
}
}