title: How to unschedule all jobs using Quartz?
body: <p>Today, I iterate</p>
  
  <pre><code>public void unschedule(final ScheduledEvent event) throws SchedulerException {
       ...
      scheduler.deleteJob(event.getName(), "my group");
       ...
  }
  </code></pre>
  
  <p>If what i want is to unschedule all jobs, can this be done better (faster)?</p>