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";

}

}