北邮 java 作业7 设计模式2，李颉老师的课上作业设计模式2

[{"title":"（ 20 个子文件 11KB ） 北邮 java 作业7 设计模式2，李颉老师的课上作业设计模式2","children":[{"title":"_14211133_孙杨_7_BookSpecification.java <span style='color:#111;'> 800B </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_SaleLineItem.java <span style='color:#111;'> 904B </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_Globalvariable.java <span style='color:#111;'> 265B </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_MainUI.java <span style='color:#111;'> 2.29KB </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_Controller.java <span style='color:#111;'> 2.06KB </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_StrategyCatlog.java <span style='color:#111;'> 306B </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_FlatRateStrategy.java <span style='color:#111;'> 692B </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_PercentageStrategy.java <span style='color:#111;'> 711B </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_AddBookUI.java <span style='color:#111;'> 2.57KB </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_CompositeStrategy.java <span style='color:#111;'> 1.21KB </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_PricingStrategyFactory.java <span style='color:#111;'> 1.02KB </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_Sale.java <span style='color:#111;'> 810B </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_BuyUI.java <span style='color:#111;'> 2.15KB </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_BookCatalog.java <span style='color:#111;'> 581B </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_NoDiscountStrategy.java <span style='color:#111;'> 456B </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_Subject.java <span style='color:#111;'> 232B </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_IPricingStrategy.java <span style='color:#111;'> 243B </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_Observer.java <span style='color:#111;'> 124B </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_StrategiesUI.java <span style='color:#111;'> 4.89KB </span>","children":null,"spread":false},{"title":"_14211133_孙杨_7_ShoppingCarUI.java <span style='color:#111;'> 1014B </span>","children":null,"spread":false}],"spread":true}]