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;
}