Performance and resources


How do I determine preformance and recourse used by one technique ( using object a instad of object b ) and comparing it with the performace and recourses of using the other technique ( using object b instead of a )
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

depends how u are judging performance.
timing the task would be one means.
DaFouAuthor Commented:
and in terms of memory usage?
DaFouAuthor Commented:
how do i time a task? please provide examples
Upgrade your Question Security!

Your question, your audience. Choose who sees your identity—and your question—with question security.

long start = System.currentTimeMillis();
long stop = System.currentTimeMillis();

long msecs = stop - start;

for short task may you want to repeat it 100 times for example.
I guess you can take help of a Java Profiler. is one and well there are many others you can do a googl for one.

For interactive tasks the judge is the user (everything visibly taking longer than 500 mSec is too long)
For internal processes, use a stopwatch timer (ask times, subtract, measure).
Memory usage is a trade of between speed of processing and speed of storage; up to your limits of course.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
for some memory amounts try:

Runtime rTime = Runtime.getRuntime();
long freeMem = rTime.freeMemory();
long maxMem = rTime.maxMemory();
long totalMem = rTime.totalMemory();

It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.