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Java measuring time

  Asked By: Jasmine    Date: Nov 27    Category: Java    Views: 794
  

Does anyone how to measure time in microseconds?? I have a program
that works in milliseconds, but really really need something that
calulates in microseconds:


import java.util.*;

public class Mil {
public static void main(String[] args)
{
long x;
Date now = new Date();
long nowLong = now.getTime();
System.out.println("Value is " + nowLong);


try
{
Thread.sleep(1000);
}
catch (InterruptedException e)
{
// ignore
}


Date now2 = new Date();
long nowLong2 = now2.getTime();
System.out.println("Value is " + nowLong2);
}
}

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7 Answers Found

 
Answer #1    Answered By: Holly Brown     Answered On: Nov 27

Try this,

..
long etime=System.currentTimeMillis();
boolean success=processYourAction();
etime= System.currentTimeMillis()-etime;
System.out.println("elapsed time  for my aciton:"+ etime);
..
..

 
Answer #2    Answered By: Maliha Malik     Answered On: Nov 27

.. but they still all return in milliseconds.

 
Answer #3    Answered By: Edward Jones     Answered On: Nov 27

> Thanks guys... but they still all return in milliseconds.

java.sun.com/.../TimeUnit.html

Does that link help?

 
Answer #4    Answered By: Lewis Welch     Answered On: Nov 27

thats what i need... but i don't really understand how it all
works :( PLEASE PLEASE let me know if you understand all that,
please!!!

 
Answer #5    Answered By: Mike Stephens     Answered On: Nov 27

That's not really what you want, as there's no way to get the current
time in microseconds.

I shall point you to
www.seis.sc.edu/.../maven-reports.html

They have an extended Date class  that can handle microseconds. Check
out the Javadocs for MicroSecondDate.

 
Answer #6    Answered By: Adalric Fischer     Answered On: Nov 27

I honestly don't mean to be a pain, but could you please help me to
understand how i would go about using this in a java  program... i.e,
taking the time, waiting a few seconds and retaking the time
(something simply to find the difference between two times)... I
tried to make a simple program, but i'm having no luck :(

 
Answer #7    Answered By: Julia Flores     Answered On: Nov 27

> That's not really what you want, as there's no way to get the current
> time  in microseconds.

I didn't look at it hard :), I just saw stuff about MircoSecond time and
offered it as a place to start :)

>
> I shall point you to
> www.seis.sc.edu/.../maven-reports.html
>
> They have an extended Date class  that can handle microseconds. Check
> out the Javadocs for MicroSecondDate.

That is totaly awesome though ... nice find.

 
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