Java反射Demo

public class Demo {public static void main(String[] args) {//① 获取字节码对象Class clazz = Utils.class;//②获取Method对象try {Method method = clazz.getDeclaredMethod("test", String.class);//③通过字节码对象创建一个ObjectObject obj = clazz.newInstance();//④通过对象调用方法method.invoke(obj, "hello");} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}