分神Java枚举的相关内容

文章 2022-04-23 来自：开发者社区

带你快速看完9.8分神作《Effective Java》—— 枚举 & 注解篇（二）

36 使用 EnumSet 替代位属性EnumSet 类集位属性的简介和性能优势及枚举类型的所有优点于一身。如果枚举类型的元素主要用于集合中，一般就使用int枚举模式，例如将2的不同倍数设置成常量：public class Text { public static final int STYLE_BOLD = 1 << 0; // 1 public static final ...

文章 2022-04-23 来自：开发者社区

带你快速看完9.8分神作《Effective Java》—— 枚举 & 注解篇（一）

34 用enum代替int常量每当需要一组固定常量，并且在编译时就知道常量分别都是什么时，就要用枚举。在枚举出现之前，大家都是用int常量来表示枚举类型：public static final int APPLE_FUJI = 0; public static final int APPLE_PIPPIN = 1; public static final int APPLE_GRANNY_SMI....

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