50_创造动态类及查看其方法列表信息

package com.itcast.day3;import java.lang.reflect.Constructor;import java.lang.reflect.Method;import java.lang.reflect.Proxy;import java.util.Collection;public class ProxyTest {    public static void main(String[] args)throws Exception {        Class clazzProxy1=Proxy.getProxyClass(Collection.class.getClassLoader(), Collection.class);        System.out.println(clazzProxy1.getName());//com.sun.proxy.$Proxy0                        /****打印动态生成的代理类的构造器列表*****/        /**         * $Proxy0()         * $Proxy0(InvoketionHandler)         */        System.out.println("--------begin constructors list----------");        Constructor[] constructors=clazzProxy1.getConstructors();        for(Constructor constructor:constructors){            String name=constructor.getName();            StringBuilder sb=new StringBuilder(name);            sb.append("(");            Class[] clazzParams=constructor.getParameterTypes();            for(Class clazz:clazzParams){                sb.append(clazz.getName());                sb.append(',');            }            if(clazzParams!=null&&clazzParams.length!=0)            sb.deleteCharAt(sb.length()-1);            sb.append(")");            System.out.println(sb);        }        /**只有一个有参数的构造器          --------begin constructors list----------          com.sun.proxy.$Proxy0(java.lang.reflect.InvocationHandler)         */                                /****打印动态生成的代理类的方法列表*****/        System.out.println("--------begin methods list----------");        Method[] methods=clazzProxy1.getMethods();        for(Method method:methods){            String name=method.getName();            StringBuilder sb=new StringBuilder(name);            sb.append("(");            Class[] clazzParams=method.getParameterTypes();            for(Class clazz:clazzParams){                sb.append(clazz.getName());                sb.append(',');            }            if(clazzParams!=null&&clazzParams.length!=0)            sb.deleteCharAt(sb.length()-1);            sb.append(")");            System.out.println(sb);        }                /**         * 都是Collection和Object里的方法         * --------begin methods list----------        add(java.lang.Object)        equals(java.lang.Object)  这三个派发给InvocationHandler，而其他方法如getClass()由Proxy自己实现        toString()        hashCode()        clear()        contains(java.lang.Object)        isEmpty()        addAll(java.util.Collection)        iterator()        size()        toArray([Ljava.lang.Object;)        toArray()        remove(java.lang.Object)        containsAll(java.util.Collection)        removeAll(java.util.Collection)        retainAll(java.util.Collection)        isProxyClass(java.lang.Class)        getProxyClass(java.lang.ClassLoader,[Ljava.lang.Class;)        getInvocationHandler(java.lang.Object)        newProxyInstance(java.lang.ClassLoader,[Ljava.lang.Class;,java.lang.reflect.InvocationHandler)        wait(long)        wait()        wait(long,int)        getClass()        notify()        notifyAll()         */    }}