cron-utils-last-execution-a

public static void main(String[] args) {
        CronDefinition  cronDefinition = CronDefinitionBuilder.instanceDefinitionFor(QUARTZ);
        CronParser parser = new CronParser(cronDefinition);
        Cron quartzCron = parser.parse("0 23 * ? * 1-5 *");

        ExecutionTime executionTime = ExecutionTime.forCron(quartzCron);

        ZonedDateTime lastExecution = ZonedDateTime.ofInstant(new Date().toInstant(), ZoneId.systemDefault());

        Optional<ZonedDateTime> lastExec = executionTime.lastExecution(lastExecution);
        ZonedDateTime now = ZonedDateTime.now();
        final long millis = executionTime.timeToNextExecution(now).get().toMillis();

        System.out.println(String.format("last: %s - millis: %s", lastExec, millis));
    }

/* Execution should give a similar result:
      last: Optional[2019-02-12T13:23+01:00[XXXX/yyyyyyyyyyy]] - millis: 1404328
*/