### Question:
StopWatch extends Stated { public void resetClock() { timeStamp = System.nanoTime(); } StopWatch(); long getStartTime(); long lap(); long getTime(); void resetClock(); void resetTime(); void onReset(); void add(long nanos); void add(StopWatch stopWatch); @Override String toString();  }### Answer:
@Test public void testResetClock() { stopWatch.start(); long startTime = stopWatch.getTime(); stopWatch.resetTime(); Assert.assertTrue(stopWatch.getStartTime() > startTime); }