Android Java : How to subtract two times?

Question

I use some kind of stopwatch in my project and I have

start time ex: 18:40:10 h
stop time  ex: 19:05:15 h

I need a result from those two

Answer 1

Assuming you are using java.util.Date:

long totalTime = endDate.getTime() - startDate.getTime();

The result will be the total time in milliseconds.