java.lang.Class-优快云博客

本文深入解析了Java中的Class类，包括其如何代表运行中的Java应用程序中的类和接口，以及它是如何为枚举、注解、数组等提供支持的。文章还介绍了Class类的基本属性和方法，如泛型声明和实现的接口等。

Type Parameters:

T- the type of the class modeled by thisClassobject. For example, the type ofString.classisClass<String>. UseClass<?>if the class being modeled is unknown.

类的类型设计是通过这类的object对象，例如，string类的类型是class<String>.

使用这个class<?>被设计的是不知道的

All Implemented Interfaces:

Serializable,AnnotatedElement,GenericDeclaration,Type

public final class Class<T>

extends Object implements Serializable, GenericDeclaration, Type, AnnotatedElement

Instances of the classClassrepresent(表现,代表)classes and interfaces in a running Java application. An enum is a kind of class and anannotation(批注)is a kind of interface. Every array also belongs(被..存放) to a class that is reflected(反射)as aClassobject that is shared by all arrays with the same element type and

number of dimensions(规模). The primitive Java types (boolean,byte,char,short,int,long,float, anddouble), and the keyword(关键字)voidare also represented asClassobjects.

类的实例表现类和接口在java的应用程序中，枚举是类的一种，和..是一种接口。

每个数组被存放一个类，这个类是作为一个类的object对象反射，object对象反射类通过数组中这相同元素类型和

Java类型boolean,byte,char,short,int,long,float, anddouble和关键字 void 是作为一个类对象

Classhas no public constructor(构造). Instead(反而)Classobjects are constructedautomatically(自动的)by the Java Virtual Machine as classes are loaded and by calls to thedefineClassmethod in the class loader.

类没有共有的构造函数，反而类被自动加载通过Java虚拟机调用defineClass方法

The following example uses aClassobject to print the class name of an object:

     void printClassName(Object obj) {
         System.out.println("The class of " + obj +
                            " is " + obj.getClass().getName());
     }

Since:

JDK1.0

See Also:

ClassLoader.defineClass(byte[], int, int),Serialized Form