public class ChronometreMicro
{
    long debut;
    
    public ChronometreMicro()
    {
    }
    
    public void start()
    {
        debut = System.nanoTime()/1000;
    }
    
    public long stop()
    {
        return System.nanoTime()/1000 - debut;
    }
    
    
}