Schedule schedule = ScheduleFactory.getSchedule(scheduleType);
ScheduledTask nextScheduledTask = null;

if (schedule instanceof DailySchedule)
    nextScheduledTask = ((DailySchedule)schedule)
        .getNextScheduledTask(startRunTime, true);
if (schedule instanceof WeeklySchedule)
    nextScheduledTask = ((WeeklySchedule)schedule)
        .getNextScheduledTask(startRunTime, true);
if (schedule instanceof MonthlyByDateSchedule)
    nextScheduledTask = ((MonthlyByDateSchedule)schedule)
        .getNextScheduledTask(startRunTime, true);
if (schedule instanceof MonthlyByDaySchedule)
    nextScheduledTask = ((MonthlyByDaySchedule)schedule)
        .getNextScheduledTask(startRunTime, true);
if (schedule instanceof YearlySchedule)
    nextScheduledTask = ((YearlySchedule)schedule)
        .getNextScheduledTask(startRunTime, true);
if (schedule instanceof SpecialDatesSchedule)
    nextScheduledTask = ((SpecialDatesSchedule)schedule)
        .getNextScheduledTask(startRunTime, true);