How to stop springboot scheduler on startup

Question

I followed https://stackoverflow.com/a/50216003/4770397 to start and stop springboot scheduler using rest endpoints. However, I want to stop scheduler on start up as per the requirement, I am trying to call the stopTestScheduler method on postconstructs but nothing seems to work. Can anyone please help.

public class Test {

    public static final String TESTSCHEDULER = "TestScheduler";

    @Autowired
    TestScheduler testScheduler;

    @Autowired
    private ScheduledAnnotationBeanPostProcessor postProcessor;

    public void startTestScheduler() {
        postProcessor.postProcessAfterInitialization(testScheduler, TESTSCHEDULER);
    }

    public void stopTestScheduler() {
        postProcessor.postProcessBeforeDestruction(testSCHEDULER, TESTSCHEDULER);
    }

}


@Configuration
@EnableAsync
@Slf4j
public class TestScheduler {

    @Autowired
    private TestService testService;

    @Scheduled(cron = Constants.CRONSCHEDULEREXPRESSION)
    @Async
    public void trigger() throws IllegalArgumentException, Exception {
        testService.test();
    }
}