public DumbInterruptableJob() 
{

}

Empty constructor for job initilization

 public  void execute(JobExecutionContext context) throws JobExecutionException 
{
        _jobName = context.getJobDetail().getFullName();
        _log.info("---- " + _jobName + " executing at " + new Date());
        try {
            // main job loop... see the JavaDOC for InterruptableJob for discussion...
            // do some work... in this example we are 'simulating' work by sleeping... :)
            for (int i = 0; i <  4; i++) {
                try {
                    Thread.sleep(1000L);
                } catch (Exception ignore) {
                    ignore.printStackTrace();
                }
                // periodically check if we've been interrupted...
                if(_interrupted) {
                    _log.info("--- " + _jobName + "  -- Interrupted... bailing out!");
                    return; // could also choose to throw a JobExecutionException 
                             // if that made for sense based on the particular  
                             // job's responsibilities/behaviors
                }
            }
        } finally {
            _log.info("---- " + _jobName + " completed at " + new Date());
        }
}

Called by the org.quartz.Scheduler when a org.quartz.Trigger fires that is associated with the Job.

 public  void interrupt() throws UnableToInterruptJobException 
{
        _log.info("---" + "  -- INTERRUPTING --");
        _interrupted = true;
}

Called by the Scheduler when a user interrupts the Job.