cs101.util
Class StopWatch

java.lang.Object
  cs101.util.StopWatch

public class StopWatch

extends java.lang.Object

A stopwatch for timing the execution of code. This class is intended to provide aproximate time of execution to a resolution of single digit miliseconds on most modern machines. Estimates of cost on a dual Athlon MP 2000+ machien yeild the following costs for the following methods

• start() takes aprox 0.000269 seconds
• stop() takes aprox 0.000570 seconds
• reset() takes aprox 0.000274 seconds
• elapsed() takes aprox 0.000278 seconds (stopped)
• look() takes aprox 0.006071 seconds(stopped)
• elapsed() takes aprox 0.000285 seconds (running)
• look() takes aprox 0.006209 seconds (running)

Version:

$Id: StopWatch.java,v 1.1 2003/10/16 20:40:51 gus Exp $

Author:

Gus Heck (gus.heck@olin.edu)

Field Summary

static long	MS_HOUR
static long	MS_MIN
static long	MS_SEC

Constructor Summary

StopWatch()
Creates a new instance of StopWatch.

Method Summary

long	elapsed()
java.lang.String	look()
void	reset() Reset the stopwatch.
void	start() Start the stopwatch.
void	stop() Stop the stopwatch.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MS_SEC

public static long MS_SEC

MS_MIN

public static long MS_MIN

MS_HOUR

public static long MS_HOUR

Constructor Detail

StopWatch

public StopWatch()

Creates a new instance of StopWatch.

Method Detail

start

public void start()

Start the stopwatch.

stop

public void stop()

Stop the stopwatch.

reset

public void reset()

Reset the stopwatch. It is perfectly legal and reasonable to reset the stopwatch while it is still running. The elapsed time on the stopwatch is set to 0 regardless.

elapsed

public long elapsed()

look

public java.lang.String look()