Need get Time in a 24 hour format while adding Time

You used hh in your SimpleDateFormat pattern. Thats the 12 hour format. Use kk instead, that gives you the hours of the day in a 24 hour format. See SimpleDateFormat.

Simply create the instance of Calendar and get 24 hr time by,

Calendar c = Calendar.getInstance();

int Hr24=c.get(Calendar.HOUR_OF_DAY);
int Min=c.get(Calendar.MINUTE);