java中Class类的基础知识点及实例

package com.volcano.reflection;
 
import java.lang.annotation.ElementType;
 
public class TestReflection2 {
    public static void main(String[] args) {
        Class a = Object.class;//类
        Class b = Runnable.class;//接口
        Class c = String[].class;//数组，只要元素类型和维度一样，都是一个class
        Class d = int[][].class;//二维数组
        Class e = Override.class;//注解
        Class f = ElementType.class;//枚举类型
        Class g = Integer.class;//基本数据类型
        Class h = void.class;//void
        Class i = Class.class;//Class
 
        System.out.println(a);
        System.out.println(b);
        System.out.println(c);
        System.out.println(d);
        System.out.println(e);
        System.out.println(f);
        System.out.println(g);
        System.out.println(h);
        System.out.println(i);
    }
}

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