一个小例子体会Java反射的动态性

import java.util.Random;
/**
 * @Author: Yeman
 * @Date: 2021-10-02-22:18
 * @Description:
 */
public class ReflectionTest {
    public static Object getInstance(String path) throws Exception {
        Class<?> clazz = Class.forName(path); //根据全类名获取类
        Object o = clazz.newInstance(); //创建指定运行时类的对象
        return o;
    }
    public static void main(String[] args) {
        String path = null;
        for (int i = 0; i < 10; i++) {
            int c = new Random().nextInt(3); //随机产生0，1，2
            //根据产生的情况指定所要创建的类
            switch (c){
                case 0 :
                    path = "java.util.Date";
                    break;
                case 1 :
                    path = "Person";
                    break;
                case 2 :
                    path = "java.lang.Object";
                    break;
            }
            try {
                Object instance = getInstance(path);
                System.out.println(instance);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}