Spring cron expression for every after 30 minutes

Question

I have following Spring job to run after every 30 minutes. Please check my cron expression, is that correct?

\"0 0 0 * * 30\"

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Answer 1

According to the Quartz-Scheduler Tutorial It should be value="0 0/30 * * * ?"

The field order of the cronExpression is

1.Seconds

2.Minutes

3.Hours

4.Day-of-Month

5.Month

6.Day-of-Week

7.Year (optional field)

Ensure you have at least 6 parameters or you will get an error (year is optional)