private void setBounds(int lowerBound, int upperBound) {
        if ((upperBound <= 0) || (upperBound - lowerBound) <= 1) {
            System.out.println("Invalid Bound Values!");
            this.lowerBound = 0;
            this.upperBound = 6;
            // sets to a default 6 sided dice.
        } else {
            this.lowerBound = lowerBound;
            this.upperBound = upperBound;
        }
    }