Enum Class Visibility
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Nested Class Summary
Nested classes/interfaces inherited from class java.lang.Enum
Enum.EnumDesc<E extends Enum<E>> -
Enum Constant Summary
Enum ConstantsEnum ConstantDescription内部 - 严格的内部实现,不应被外部访问包私有 - 只能被同包代码访问受保护 - 只能被子类或特定包访问公开 - 可被任何外部代码访问 -
Method Summary
Modifier and TypeMethodDescriptionstatic VisibilityReturns the enum constant of this class with the specified name.static Visibility[]values()Returns an array containing the constants of this enum class, in the order they are declared.
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Enum Constant Details
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PUBLIC
公开 - 可被任何外部代码访问 -
PROTECTED
受保护 - 只能被子类或特定包访问 -
PACKAGE_PRIVATE
包私有 - 只能被同包代码访问 -
INTERNAL
内部 - 严格的内部实现,不应被外部访问
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Method Details
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values
Returns an array containing the constants of this enum class, in the order they are declared.- Returns:
- an array containing the constants of this enum class, in the order they are declared
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valueOf
Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)- Parameters:
name- the name of the enum constant to be returned.- Returns:
- the enum constant with the specified name
- Throws:
IllegalArgumentException- if this enum class has no constant with the specified nameNullPointerException- if the argument is null
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