Java enum用法的相关内容

深入理解 Java 枚举 Enum 类型用法

枚举（enum），是指一个经过排序的、被打包成一个单一实体的项列表一个枚举的实例可以使用枚举项列表中任意单一项的值。枚举在各个语言当中都有着广泛的应用，通常用来表示诸如颜色、方式、类别、状态等等数目有限、形式离散、表达又极为明确的量。Java从JDK5开始，引入了对枚举的支持在枚举出现之前，如果想要...

Java枚举(enum)常用的用法总结

Java枚举(enum)七种常见的用法汇总如下:JDK1.5引入了新的类型——枚举。在 Java 中它虽然算个“小”功能，却给我的开发带来了“大”方便。用法一：常量在JDK1.5 之前，我们定义常量都是：public static fianl…. 。现在好了，有了枚举，可以把相关的常量分组到一个枚举...

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【小家Java】深入理解Java枚举类型(enum)及7种常见的用法（含EnumMap和EnumSet）（下）

EnumSet用法public abstract class EnumSet<E extends Enum<E>> extends AbstractSet<E> implements Cloneable, java.io.Serializable EnumSet ...

【小家Java】深入理解Java枚举类型(enum)及7种常见的用法（含EnumMap和EnumSet）(中）

常用的7种使用方式用法一：常量（也是最为常用的使用场景）在JDK1.5 之前，我们定义常量都是： public static final… 。现在好了，有了枚举，可以把相关的常量分组到一个枚举类型里，而且枚举提供了比常量更多的方法。public enum Color { // ...

【小家Java】深入理解Java枚举类型(enum)及7种常见的用法（含EnumMap和EnumSet）(上)

前文这次当我入职一家新公司的时候，编写代码发现，里面还在大量的使用public static final…这种语句来神马一些状态常量。很多时候，虽然都能暂时完成一样的功能，但武功高低，一看便知。因此我加入之后，迅速全面引入枚举类型，并且指定枚举的使用规范、统一实现的接口。。。什么是枚举类型枚举类型是...

C++和Java中枚举enum的用法

在C++和java中都有枚举enum这个关键字，但是它们之间又不太一样。对于C++来说，枚举是一系列命名了的整型常量，而且从枚举值转化为对应的整型值是在内部进行的。而对于Java来说，枚举更像一个类的命名的实例，你可以自定义枚举的成员，枚举值转化为对应的整型值是再外部进行的。下面以我之前的一篇博客8...

[Java基础] Java enum的用法详解

用法一：常量在JDK1.5 之前，我们定义常量都是： public static fianl.... 。现在好了，有了枚举，可以把相关的常量分组到一个枚举类型里，而且枚举提供了比常量更多的方法。 public enum Color { RED, GREEN, BLANK, YELLOW } 用法二...

Java 枚举(enum) 详解7种常见的用法

JDK1.5引入了新的类型——枚举。在 Java 中它虽然算个“小”功能，却给我的开发带来了“大”方便。大师兄我又加上自己的理解，来帮助各位理解一下。用法一：常量在JDK1.5 之前，我们定义常量都是： public static fianl....&n...

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