package com.generationjava.test;
/**
* Useful when doing timings in a debug or test situation.
*/
public class StopWatch {
static public int AN_HOUR = 60 * 60 * 1000;
static public int A_MINUTE = 60 * 1000;
private long startTime = -1;
private long stopTime = -1;
/**
* Start the stopwatch.
*/
public void start() {
this.startTime = System.currentTimeMillis();
}
/**
* Stop the stopwatch.
*/
public void stop() {
this.stopTime = System.currentTimeMillis();
}
/**
* Reset the stopwatch.
*/
public void reset() {
this.startTime = -1;
this.stopTime = -1;
}
/**
* Split the time.
*/
public void split() {
this.stopTime = System.currentTimeMillis();
}
/**
* Remove a split.
*/
public void unsplit() {
this.stopTime = -1;
}
/**
* Get the time on the stopwatch. This is either the
* time between start and latest split, between start and stop,
* or the time between the start and the moment this method is called.
*/
public long getTime() {
if(stopTime != -1) {
return (System.currentTimeMillis() - this.startTime);
} else {
return this.stopTime - this.startTime;
}
}
public String toString() {
return getTimeString();
}
/**
* Get the time gap as a String.
* In hours, minutes, seconds and milliseconds.
*/
public String getTimeString() {
int hours, minutes, seconds, milliseconds;
long time = getTime();
hours = (int) (time / AN_HOUR);
time = time - (hours * AN_HOUR);
minutes = (int) (time / A_MINUTE);
time = time - (minutes * A_MINUTE);
seconds = (int) (time / 1000);
time = time - (seconds * 1000);
millis = (int) time;
return hours + "h:" + minutes + "m:" + seconds + "s:" + millis + "ms";
}
}
摘自：NET CHINA 时间：2003年1月13日
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