cron expression for every 30 seconds in quartz scheduler? : <p>I am using Quartz Scheduler to run my jobs. I want to run my job every thirty seconds. What will be my cron expression for that?</p>

<p>For every one minute, I am using below cron expression:</p>

<pre><code>&lt;cron-expression&gt;0 0/1 * 1/1 * ? *&lt;/cron-expression&gt;
</code></pre>

<p>What it will be for every thirty seconds?</p>
