@Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final Kokus other = (Kokus) obj;
        if (this.nbkoku != other.nbkoku) {
            return false;
        }
        return true;
    }