基于4.1节中对业务规则和设计的调优，你得到了一个用POJO来表示的领域对象的类图。
Based on the tuning of business rules and design in Section 4.1 you come up with a class diagram for your domain objects represented by the POJO. Our recommendations are.
基于4.1节中对业务规则和设计的调优，你得到了一个用POJO来表示的领域对象的类图。
Based on the tuning of business rules and design in Section 4.1 you come up with a class diagram for your domain objects represented by the POJO. Our recommendations are.
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