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## Chapter 6. Enums and Annotations(枚举和注解) ### Chapter 6 Introduction(章节介绍) JAVA supports two special-purpose families of reference types: a kind of class called an enum type, and a kind of interface called an annotation type. This chapter discusses best practices for using these type families. JAVA 支持两种特殊用途的引用类型:一种称为枚举类型的类,以及一种称为注解类型的接口。本章将讨论这些类型在实际使用时的最佳方式。