可能重复: Java:本地枚举
为什么我们无法在特定方法中定义枚举在java中?如果我有一个场景,我将在一个方法中使用这些枚举值,而不是在任何其他地方。在全球范围内声明方法而不是定义它不是很好吗?我的意思是公开或默认。
Why do we cannot define enum within a specific method in java? If I have a scenario where I will be using those enum values in a method only not at any other place. Wouldn't it be nice to declare in method rather defining it at globally? i mean as public or default.
推荐答案您不能在方法级别定义 JavaDocs 。 (我想看到允许的语言)
You cannot define at the method level as stated by the JavaDocs. (I would like to see a language that allowed that)
嵌套枚举类型是隐式静态的。允许明确声明嵌套的枚举类型为静态。
Nested enum types are implicitly static. It is permissible to explicitly declare a nested enum type to be static.
这意味着无法定义本地(§14.3)枚举或定义枚举在一个内部类(§8.1.3)中。
This implies that it is impossible to define a local (§14.3) enum, or to define an enum in an inner class (§8.1.3).
你可以做什么在类级别声明它,在方法级别:
What you can do it declare it at the class level and a variable at the method level:
public class Light { ... private LightSwitch position; private enum LightSwitch { On, Off } public void SwitchOn() { Switch(LightSwitch.On); } public void SwitchOff() { Switch(LightSwitch.Off); } private void Switch(LightSwitch pos) { position = pos; } }更多推荐
为什么Java不允许在方法中定义枚举?
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