Spring cron expression for run job every quarterly third week of friday

Question

i have job which has scheduled below (cron = "0 0 19 02 01 ?") every year 02 of jan at 7 pm now i need to run for quarterly of third week of friday of year is there is any way . i am using spring cron scheduler instead of quartz.

Answer 1

If by "quarterly of third week of friday of year" you mean "third friday of each quarter", then this will do:

0 0 19 15-21 1,4,7,10 FRI

It only matches:

• 7 PM ( 0 0 19 )
• Fridays ( FRI )
• 3rd Friday of a month will be dated between 15th and 21st ( 15-21 )
• 3rd Friday of each quarter will be in January, April, July, or October ( 1,4,7,10 ).

Test

CronSequenceGenerator cronGen = new CronSequenceGenerator("0 0 19 15-21 1,4,7,10 FRI");
java.util.Date date = java.sql.Date.valueOf("2018-01-01");
for (int i = 0; i < 12; i++) {
    date = cronGen.next(date);
    System.out.println(new java.text.SimpleDateFormat("EEE, MMM d, yyyy 'at' hh:mm:ss a").format(date));
}

Output

Fri, Jan 19, 2018 at 07:00:00 PM
Fri, Apr 20, 2018 at 07:00:00 PM
Fri, Jul 20, 2018 at 07:00:00 PM
Fri, Oct 19, 2018 at 07:00:00 PM
Fri, Jan 18, 2019 at 07:00:00 PM
Fri, Apr 19, 2019 at 07:00:00 PM
Fri, Jul 19, 2019 at 07:00:00 PM
Fri, Oct 18, 2019 at 07:00:00 PM
Fri, Jan 17, 2020 at 07:00:00 PM
Fri, Apr 17, 2020 at 07:00:00 PM
Fri, Jul 17, 2020 at 07:00:00 PM
Fri, Oct 16, 2020 at 07:00:00 PM