/*
 * Author: G Towell
 * File: Counter.java
 * Purpose: In-class demo
 *          This class shows printing and class instances
 **/
public class Counter
{
    /*
     * Just holds a number.  The number has not actual use
     **/
    private int count;

    /*
     * The default constructor.  Realistically, this could be omitted
     */
    public Counter()
    {
	count = 0;
    }

    /**
     * A constructor initializing the internal variable
     * @param val the value to set the internal variable
     **/
    public Counter (int val)
    {
	count = val;
    }

    /**
     * Accessor for the count variable
     * @return the value of an internal variable
     **/
    public int getCount()
    {
	return count;
    }

    /**
     * Increment an internal variable by 1
     **/
    public void increment()
    {
	count++;
    }

    /** 
     * Decrement an internal variable by some amount
     * @param v the amount to decremet by
     **/
    public void decrement(int v)
    {
	count -= v;
    }

    /**
     * Reset the value of the internal variable to zero
     **/
    public void reset()
    {
	count = 0;
    }

    /**********************
     * main
     * @param args not used
     * Driver code for the demo
     **********************/
    public static void main(String[] args)
    {
	Counter c;
	c = new Counter();
	c.increment();
	c.increment();
	System.out.println(c.getCount());
	c.reset();
	Counter d = new Counter(5);
	d.increment();
	Counter e = d;
	e.increment();
	System.out.println(c.getCount() + " " + d.getCount() + " " + e.getCount());
    }
}