// Items for purchase in Alberta

public class AlbertaItem implements Item
{
    // These items all belong to the same catalogue.
    // This is set by the factory.
    static Catalogue cat = new Catalogue ();

    // These items all have the same tax rate.
    static final int TAX_RATE = 8; // per cent.

    // It's this catalogue entry.
    String id;

    // And this many of them.
    int quantity;

    // What price for this many plus tax, in cents?
    public int totalPrice ()
    {
	return (quantity * cat. getPrice (id)) * (100+TAX_RATE) / 100;
    }

    // How many? (For interface)
    public int getQuantity ()
    {
	return quantity;
    }

    // What id? (For interface)
    public String getItemId ()
    {
	return id;
    }

    // What name? (For interface)
    public String getItemName ()
    {
	return cat. getName (id);
    }

    // What price per each? (For interface)
    public float getUnitPrice ()
    {
	return (float) cat. getPrice (id) / 100.0F;
    }

    // Total price in float dollars (For interface)
    public float getTotalPrice ()
    {
	return (float) totalPrice () / 100.0F;
    }

    // Convert to string.
    public String toString()
    {
	// Format a price string.
	String price = String. valueOf (totalPrice ());
	String money =
	    "$"
	    + price. substring (0, price. length () - 2)
	    + "."
	    + price. substring (price. length () - 2);

	return
		id
		+ " "
		+ cat. getName (id)
		+ " "
		+ quantity
		+ " "
		+ money;
    }
}