Stop watch with nano second

  

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;
  }

}

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Stop watch with nano second : StopWatch « Development Class « Java

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