class ExponentialDistribution extends AbstractRealDistribution {

    public double getMean() {
        return mean;
    }

    public  ExponentialDistribution(double mean);
    public  ExponentialDistribution(double mean, double inverseCumAccuracy);
    public  ExponentialDistribution(RandomGenerator rng, double mean);
    public  ExponentialDistribution(RandomGenerator rng,
                                   double mean,
                                   double inverseCumAccuracy);

}