* actual type arguments refers to a non-existent type declaration * @throws MalformedParameterizedTypeException if any of the * actual type parameters refer to a parameterized type that cannot * be instantiated for any reason * @since 1.5 */ Type[] getActualTypeArguments(); /** * Returns the...
Enum protected Enum(Stringname, int ordinal) Sole constructor. Programmers cannot invoke this constructor. It is for use by code emitted by the compiler in response to enum type declarations. Parameters: name- - The name of this enum constant, which is the identifier used to declare it. ...
Type parameters: <T> –the type of the class modeled by this Class object. For example, the type of String.class is Class<String>. Use Class<?> if the class being modeled is unknown. 每个类都有一个 ClassLoader 代码语言:javascript 代码运行次数:0 运行 AI代码解释 public final class Class...
[Android.Runtime.Register("java/lang/Enum", DoNotGenerateAcw=true)] [Java.Interop.JavaTypeParameters(new System.String[] { "E extends java.lang.Enum<E>" })] public abstract class Enum : Java.Lang.Object, IDisposable, Java.Interop.IJavaPeerable, Java.IO.ISerializable, Java.Lang.IComparab...
enum Type { NAME,ID,CLASS,TO_STRING } } 复制代码 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 2. 这个注解用于指示这个枚举类如何序列化,稍后我们再详细设置,我们再写一个接口,用于可以详细设置序列化的值,而不是直接使用枚举的原始值,同时,为了更好兼容步骤3中的适配器...
关键词enum可以将一组具名值的有限集合创建成一种新的类型,而这些具名的值可以作为常规程序组件使用。 枚举最常见的用途便是替换常量定义,为其增添类型约束,完成编译时类型验证。 1.1. 枚举定义 枚举的定义与类和常量定义非常类型。使用enum关键字替换class关键字,然后在enum中定义“常量”即可。
public static <E extendsEnum<E>>EnumSet<E> allOf(Class<E> elementType) Creates an enum set containing all of the elements in the specified element type. Type Parameters: E- The class of the elements in the set Parameters: elementType- the class object of the element type for this enum ...
super.open(parameters); this.todayPv = getRuntimeContext().getState(new ValueStateDescriptor<Map<Tuple2<DimNameEnum, String>, Long>>( "todayPv", TypeInformation.of( new TypeHint<Map<Tuple2<DimNameEnum, String>, Long>>() { }))); } @Override public void process(...
(Configuration parameters)throws Exception{super.open(parameters);this.todayPv=getRuntimeContext().getState(newValueStateDescriptor<Map<Tuple2<DimNameEnum,String>,Long>>("todayPv",TypeInformation.of(newTypeHint<Map<Tuple2<DimNameEnum,String>,Long>>(){})));}@Overridepublicvoidprocess(Long aLong,...
[Android.Runtime.Register("java/util/EnumMap", DoNotGenerateAcw=true)] [Java.Interop.JavaTypeParameters(new System.String[] { "K extends java.lang.Enum<K>", "V" })] public class EnumMap : Java.Util.AbstractMap, IDisposable, Java.Interop.IJavaPeerable, Java.IO.ISerializable, Java.Lang...