GourmetCoffeeSystem
代码说明：
处理咖啡店的订单，核对账单，以及库存管理(Processing coffee shop orders, check invoices, and inventory management)
文件列表：
.classpath
.project
bin
...\Catalog.class
...\Coffee.class
...\CoffeeBrewer.class
...\GourmetCoffee.class
...\Order.class
...\OrderItem.class
...\Product.class
...\Sales.class
...\TestCatalog.class
...\TestCoffee.class
...\TestCoffeeBrewer.class
...\TestOrder.class
...\TestOrderItem.class
...\TestProduct.class
...\TestSales.class
src
...\Catalog.java
...\Coffee.java
...\CoffeeBrewer.java
...\GourmetCoffee.java
...\Order.java
...\OrderItem.java
...\Product.java
...\Sales.java
...\TestCatalog.java
...\TestCoffee.java
...\TestCoffeeBrewer.java
...\TestOrder.java
...\TestOrderItem.java
...\TestProduct.java
...\TestSales.java
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