public class StopWatch {
public final long t0 = System.currentTimeMillis();
public final long n0 = System.nanoTime();
static public StopWatch start() {
return new StopWatch();
}
public long millisEllapsed() {
return System.currentTimeMillis() - t0;
}
public double secondsEllapsed() {
return millisEllapsed() / 1000.0;
}
public long nanoEllapsed() {
return System.nanoTime() - n0;
}
}