public class NumberDisplay
{
    private int max;
    private int value;

    public NumberDisplay(int clockMax, int clockValue)
    {
        max = clockMax;
        value = clockValue;
    }

    public int getValue()
    {
        return value;
    }

    public int getMax()
    {
        return max;
    }

    public void forward()
    {
        if(value == max)
        {
            value = 0;
        }
        else
        {
            value++;
        }
    }
}