How to get diffrence between time

Dear All,
how to get the difference b/w the time.
consider 3 attributes, say initial time,final time and Difference time.
The Data type of those attributes are Timestamps.
Example :
initial time : 8.00 a.m
final time : 1.00 p.m
difference : 5.00 hrs(final time - initial time)
Thanks in advance

The timestamps have a method .getTime()
This will return the milliseconds since January 1, 1970, 00:00:00 GMT .
So if you do
long diff = finalTime.getTime() - initialTime.getTime();diff will be the difference in milliseconds. Using that, you can calculate how many seconds/hours/days/... it is.

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