Calculate Difference between two times in Android

Question

I have two string variables such as StartTime and EndTime. I need to Calculate the TotalTime by subtracting the EndTime with StartTime.

The Format of StartTime and EndTime is as like follows:

StartTime = "08:00 AM";
EndTime = "04:00 PM";

TotalTime in Hours and Mins Format. How to calculate this in Android?

Answer 1

Note: Corrected code as below which provide by Chirag Raval because in code which Chirag provided had some issues when we try to find time from 22:00 to 07:00.

SimpleDateFormat simpleDateFormat = new SimpleDateFormat("HH:mm");
Date startDate = simpleDateFormat.parse("22:00");
Date endDate = simpleDateFormat.parse("07:00");

long difference = endDate.getTime() - startDate.getTime(); 
if(difference<0)
{
    Date dateMax = simpleDateFormat.parse("24:00");
    Date dateMin = simpleDateFormat.parse("00:00");
    difference=(dateMax.getTime() -startDate.getTime() )+(endDate.getTime()-dateMin.getTime());
}
int days = (int) (difference / (1000*60*60*24));  
int hours = (int) ((difference - (1000*60*60*24*days)) / (1000*60*60)); 
int min = (int) (difference - (1000*60*60*24*days) - (1000*60*60*hours)) / (1000*60);
Log.i("log_tag","Hours: "+hours+", Mins: "+min); 

Result will be: Hours: 9, Mins: 0