复制代码 package com.beidou.test; import java.lang.reflect.Method; public class Dynamic { public static void main(String[] args) throws Exception{ Class c = Dynamic.class;//得到对象 Method[] methods = c.getDeclaredMethods();//得到方法 for(Method method : methods){ System.out.print(method.getName());//打印参数名 Class[] parameterTypes = method.getParameterTypes(); for(int i=0;i<parameterTypes.length;i++){ String nameString=parameterTypes[i].getName(); System.out.print("parameterType:"+nameString);//打印方法参数类型 } System.out.print("ReturnType:"+method.getReturnType()); System.out.println(); } Object obj=c.newInstance();//获取到方法对象,假设方法的参数是一个int,String,method名为getAge Method sAge = c.getMethod("getAge", new Class[] {int.class,String.class}); //获得参数Object Object[] arguments = new Object[]{new Integer(23),new String("abc")}; //执行方法 String s=(String)sAge.invoke(obj , arguments); System.out.print(s); } public String getAge(int age,String name){ return name+": "+age; } }