Rescheduling quartz job programatically

so many people looks for updating cron trigger with new cron expression. updating cron expression is very easy

First get the existing cron and now create new cronTrigger with the existing cron trigger details

The following code will explains how to reschedule job with new cron expression
UpdatingCronExp.java

package com.raj;

/**
 * @author nagarajuv
 *
 */

public class UpdatingCronExp {
     public void updateCronExpression(org.quartz.impl.StdScheduler stdSchedular, Supplier supplier, String triggerName) {
  CronTrigger cronTrigger = (CronTrigger) stdSchedular.getTrigger(triggerName, groupName);
  String newCronExpression = "0 20 9 * * ?"
  try {
   // Creating a new cron trigger
   CronTrigger updatedCronTrigger = new CronTrigger();
   updatedCronTrigger.setJobName(cronTrigger.getJobName());
   updatedCronTrigger.setName(triggerName);
   updatedCronTrigger.setCronExpression(newCronExpression);
   // Reschedule the job with updated cron expression
   stdSchedular.rescheduleJob(triggerName, groupName, updatedCronTrigger);
  } catch (ParseException e) {
   e.printStackTrace();
  }
 }
}

Tags:Quartz job, Rescheduling job programatically, CronTrigger updation