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package horstmann.ch05_invoice;
/**
A decorator for an item that applies a discount.
*/
public class DiscountedItem implements LineItem
{
/**
Constructs a discounted item.
@param item the item to be discounted
@param discount the discount percentage
*/
public DiscountedItem(LineItem item, double discount)
{
this.item = item;
this.discount = discount;
}
public double getPrice()
{
return item.getPrice() * (1 - discount / 100);
}
public String toString()
{
return item.toString() + " (Discount " + discount
+ "%)";
}
private LineItem item;
private double discount;
}
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