import org.osgi.framework.*; public class MyBundleActivator implements BundleActivator { private BundleContext bundleContext; public void start(BundleContext context) throws Exception { this.bundleContext = context; ServiceReference<StartLevel> startLevelRef = bundleContext.getServiceReference(StartLevel.class); StartLevel startLevel = bundleContext.getService(startLevelRef); startLevel.setBundleStartLevel(context.getBundle(), 2); MyService service = new MyServiceImpl(); bundleContext.registerService(MyService.class, service, null); if (startLevel.getStartLevel() >= 3) { } } public void stop(BundleContext context) throws Exception { ServiceReference<MyService> serviceRef = bundleContext.getServiceReference(MyService.class); MyService service = bundleContext.getService(serviceRef); bundleContext.ungetService(serviceRef); if (bundleContext.getBundle().getState() == Bundle.ACTIVE) { } } }