001package horstmann.ch05_invoice;
002/**
003   A line item in an invoice.
004 */
005public interface LineItem
006{
007        /**
008      Gets the price of this line item.
009      @return the price
010         */
011        double getPrice();
012        /**
013      Gets the description of this line item.
014      @return the description
015         */
016        String toString();
017}