Stopwatch

Returns the current elapsed time shown on this stopwatch, expressed in milliseconds, with any fraction rounded down. This is identical to elapsedTime(TimeUnit.MILLISECONDS.

Returns the current elapsed time shown on this stopwatch, expressed in the desired time unit, with any fraction rounded down.

Note that the overhead of measurement can be more than a microsecond, so it is generally not useful to specify [[TimeUnit# NANOSECONDS]] precision here.

Sets the elapsed time for this stopwatch to zero, and places it in a stopped state.

Starts the stopwatch.

Stops the stopwatch. Future reads will return the fixed duration that had elapsed up to this point.

Returns a string representation of the current elapsed time equivalent to toString(4) (four significant figures).