●●●●● ●●●● 根据类图中创建类的定义 ●●● ●●● ●●●● public class salesLineltem private int quantity; private ProductDescription description public SalesLineltem(ProductDescription desc, int qty ..] public Money getSubtotal(..] ProductDescription Saleslinelten氵 description description: Text quantity: Integero price: Money 1 itemID: ItemID getSubtotal0: Money根据类图中创建类的定义 public class SalesLineItem { private int quantity; private ProductDescription description; public SalesLineItem(ProductDescription desc, int qty) { ... } public Money getSubtotal() { ... } } SalesLineItem quantity : Integer getSubtotal() : Money ProductDescription description : Text price : Money itemID : ItemID ... 1 description