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Serializable, Comparable<CalcError>, ConstableEnum.EnumDesc<E extends Enum<E>>static CalcErrorforValue(int value) intgetValue()static CalcErrorstatic CalcError[]values()name - the name of the enum constant to be returned.IllegalArgumentException - if this enum class has no constant with the specified nameNullPointerException - if the argument is nullvalue - 表示枚举常量的整数值。