How to check whether the alarm time has been elapsed before setting the alarm?

I have tried the below method of checking the alarm time with the current time in millis,its working fine in most of the cases but when i set the alarm for eg. @4:07 p.m(i.e just few mins after exact hour) then the comparison fails..

operation_morn = PendingIntent.getBroadcast(getBaseContext(), RQS_morn,
                intent, 0);
        Calendar calNow = Calendar.getInstance();
        long current_time = calNow.getTimeInMillis();
        // Calendar calSet = (Calendar) calNow.clone();
        // calNow.set(selected_Year, selected_Month, selected_Day);
        calNow.set(Calendar.DAY_OF_MONTH, selected_Day);
        calNow.set(Calendar.MONTH, (selected_Month - 1));
        calNow.set(Calendar.YEAR, selected_Year);
        calNow.set(Calendar.HOUR_OF_DAY, Integer.parseInt(hours));
        calNow.set(Calendar.MINUTE, Integer.parseInt(minutes));
        calNow.set(Calendar.AM_PM, Calendar.AM);



        long alarm_time_in_millis = calNow.getTimeInMillis();
        if (alarm_time_in_millis > current_time) {
            alarmManager.set(AlarmManager.RTC_WAKEUP, calNow.getTimeInMillis(),
                    operation_morn);

        }

Solution

Problem is here

calNow.set(Calendar.HOUR_OF_DAY, Integer.parseInt(hours)); // It sets hour for 24 hours format.

This should be

calNow.set(Calendar.HOUR, Integer.parseInt(hours));

This is wrong because your are setting AM/PM your self by doing calNow.set(Calendar.AM_PM, Calendar.AM). If you are handling 24 hours format then remove this line only. This will solve your problem.

And for time comparison you can use Timestamp, which having method to compare two times. Although you can use Calender also to compare times.

Timestamp alramTimeStamp = new Timestamp(calNow.getTimeInMillis());
Timestamp currentTimeStamp = new Timestamp(current_time);
if (alramTimeStamp.after(currentTimeStamp)) {
    alarmManager.set(AlarmManager.RTC_WAKEUP, calNow.getTimeInMillis(),
            operation_morn);
}