Is there a java class for constructing a cron expression using a date?

Question

I need to build a cron expression based on user input from a form. So I have a datepicker and a select box to choose the frequency. I can build a cron expression from this easily enough, but it feels like I am reinventing the wheel. Is there a suitable class to do this for me? Something with a method like

public String cron(String frequency, Calendar nextRunTime);

Answer 1

I think the Cron-functionality in quartz could provide this for you, but you do have to do some programming to make it work. (http://www.quartz-scheduler.org/docs/tutorials/crontrigger.html)

This is if I understand your question correctly.