title: java Quartz Scheduler cron expression for every after 30 minutes quarter past the hours
body: <p>I know how to run a job at every 30 minutes is by using following cron expression:</p>
  
  <pre><code>0 0/30 * * * ?
  </code></pre>
  
  <p>It runs the job at every 30 minutes like :: </p>
  
  <pre><code>10:30, 11, 11:30, 12.
  </code></pre>
  
  <p>I want to make it run every after 30 minutes quarter past the hours like::</p>
  
  <pre><code>10:15, 10:45, 11:15, 11:45.
  </code></pre>
  
  <p>How do I make it run every after 30 minutes quarter past the hours as explained above?</p>
  
  <p>UPDATE :: I have seen that link. The solution stated in the given link is not working. It started cron job at quarter past hour but It is running on every second of the minute like 15:15:00, 15:15:01, 15:15:02.....</p>
  
  <p>Thanks</p>