@文心快码enum class cannot have type parameters 文心快码 枚举类(enum class)在Java中不能拥有类型参数。 在Java中,枚举(enum)是一种特殊的类,用于表示一组常量。而枚举类(enum class)是Java 5引入的一种更安全的枚举实现方式,它使用关键字enum来定义。 枚举类本身是一种特殊的类,它不能拥有类型参
enum classes cannot have finalize methods. Class<E>getDeclaringClass() Returns the Class object corresponding to this enum constant's enum type. inthashCode() Returns a hash code for this enum constant. Stringname() Returns the name of this enum constant, exactly as declared in its enum declara...
* actual type parameters refer to a parameterized type that cannot * be instantiated for any reason * @since 1.5 */ Type[] getActualTypeArguments(); /** * Returns the {@code Type} object representing the class or interface * that declared this type. * * @return the {@code Type} obje...
You cannot define new methods when you are creating an enumeration. However, an enumeration type inherits a complete set of static and instance methods from the Enum class. The following sections survey most of these methods, in addition to several other methods that are commonly used when ...
'!' requires its left operand to have a type parameter, class or interface type, but this operand has the type '<type>' '#Else' must be preceded by a matching '#If' or '#ElseIf' '#ElseIf' cannot follow '#Else' as part of an '#If' block '#ElseIf' must be preceded by...
they have a staticvaluesmethod that returns an array containing all of the values of the enum in the order they are declared. This method is commonly used in combination with the for-each construct to iterate over the values of an enum type. For example, this code from thePlanetclass examp...
In the .NET Framework version 2.0, EnumBuilder emits enumerations whose elements have the correct type.Constructors Expand table EnumBuilder() Initializes a new instance of the EnumBuilder class. Properties Expand table Assembly Retrieves the dynamic assembly that contains this enum definition...
usingSystem;enumSignMagnitude { Negative =-1, Zero =0, Positive =1};publicclassExample{publicstaticvoidMain(){foreach(varvalueinEnum.GetValues(typeof(SignMagnitude))) { Console.WriteLine("{0,3} 0x{0:X8} {1}", (int)value, ((SignMagnitude)value)); } } }// The example displays the...
You can use the static method on the System.Enum base class type or a specific enumeration type. Syntax Copy [System.Enum]::IsDefined([<enum-name>], <value>) Syntax Copy [<enum-name>]::IsDefined([<enum-name>], <value>) PowerShell Copy enum Season { Unknown Spring Summer Au...
The request was made with an out-of-range value, or is incompatible with the type. CannotBeSingleton -2147217364 An illegal attempt was made to make a class singleton, such as when the class is derived from a non-singleton class. InvalidCimType -2147217363 The CIM type specified is not va...