Java.lang Class

1 Java.lang Class介绍

Java Class类实例表示正在运行的Java应用程序中的类和接口。每个属于一个类的数组都是一个Class对象，并且由所有数组共享（具有相同的元素类型和维数）。

2 Java.lang Class声明

public final class Class<T>
   extends Object
      implements Serializable, GenericDeclaration, Type, AnnotatedElement

3 Java.lang Class方法

4 Java.lang Class案例

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
public class JavaClassExample1 {  
    public static void main(String[] args) throws ClassNotFoundException, IllegalAccessException, InstantiationException {  
        // returns the Class object for the class with the given name  
        Class class1 = Class.forName("java.lang.String");  
        Class class2 = int.class;  
        System.out.print("Class represented by class1: ");  
        // applying toString method on class1  
        System.out.println(class1.toString());  
        System.out.print("Class represented by class2: ");  
        // applying toString() method on class2  
        System.out.println(class2.toString());  
        String s = "JavaTpoint";  
        int i = 10;  
  
        // checking for Class instance  
        boolean b1 = class1.isInstance(s);  
        boolean b2 = class1.isInstance(i);  
        System.out.println("is p instance of String : " + b1);  
        System.out.println("is j instance of String : " + b2);  
    }  
}  

输出结果为：

Class represented by class1: class java.lang.String
Class represented by class2: int
is p instance of String : true
is j instance of String : false