Measuring a short interval in time

[Wes Harrison]

I would like to take two points in my program and measure the elapsed time
between them. Currently I am doing:

Calendar cal1 = Calendar.getInstance();
long time1 = cal1.getTimeInMillis());
..
..
Calendar cal2 = Calendar.getInstance();
long time2 = cal2.getTimeInMillis());

long diff = time2 - time1;

Is there a better, simpler or faster way of doing this? I want the elapsed
time in milliseconds.

Thanks,

Wes

 

[Michael Borgwardt]

I would like to take two points in my program and measure the elapsed time
between them. Currently I am doing:

Calendar cal1 = Calendar.getInstance();
long time1 = cal1.getTimeInMillis());
.
.
Calendar cal2 = Calendar.getInstance();
long time2 = cal2.getTimeInMillis());

long diff = time2 - time1;

Is there a better, simpler or faster way of doing this? I want the elapsed
time in milliseconds.

No need for the weighty Calendar objects, just use System.currentTimeMillis() directly

 

[Paul Lutus]

I would like to take two points in my program and measure the elapsed time
between them. Currently I am doing:

Calendar cal1 = Calendar.getInstance();
long time1 = cal1.getTimeInMillis());
.
.
Calendar cal2 = Calendar.getInstance();
long time2 = cal2.getTimeInMillis());

long diff = time2 - time1;

Is there a better, simpler or faster way of doing this?

Not really, not in a functional sense. Another poster has pointed out the
use of System.currentTimeMillis(), but the result is the same.

I want the
elapsed time in milliseconds.

You do realize, don't you, that in a multitasking operating system, you
won't get what you may want, e.g. the actual processor time to accomplish a
task? Also, the millisecond times provided by typical PCs is granular,
sometimes to a degree that your results may not be accurate enough.