Quartz jobs are showing up even after deleting them. Do you know why?

I am seeing the scheduler returns the same job (scheduler.getCurrentlyExecutingJobs()) even after deleting it (scheduler.deleteJob(jobExCntxt.getJobDetail().getName(), jobExCntxt.getJobDetail().getGroup())). Am I doing the right thing? I wanted to remove that job and associated threads forever. Is that possible?

        try {
            List<JobExecutionContext> jobExCntxts = scheduler.getCurrentlyExecutingJobs();
            if(jobExCntxts != null){

                for(JobExecutionContext jobExCntxt: jobExCntxts){
                    if(jobExCntxt != null){
                        Date triggerTime =  DateUtils.addMinutes(jobExCntxt.getTrigger().getPreviousFireTime(), 1);
                        if(triggerTime.before(Calendar.getInstance().getTime())){
                          开发者_如何学运维  System.out.println("Deleting a long living job !");

                            System.out.println("Delete return = " + scheduler.deleteJob(jobExCntxt.getJobDetail().getName(), 
                                        jobExCntxt.getJobDetail().getGroup()));
                        }
                    }
                }
            }

        } catch (SchedulerException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

Have you tried interrupt() the job? deleteJob() only removes the job from the job store.