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newProxyInstance(ClassLoader loader, Class[] interfaces, InvocationHandler h) ´´½¨Ò»¸ö´úÀí
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²Î¼û³ÌÐòVectorProxy.java
 
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package com.langsin.dynamicproxy;  
 
import java.lang.reflect.InvocationHandler;  
import java.lang.reflect.Method;  
import java.lang.reflect.Proxy;  
import java.util.List;  
import java.util.Vector;  
 
public class VectorProxy implements InvocationHandler  
{  
    private Object proxyobj;  
 
    public VectorProxy(Object obj)  
    {  
        proxyobj = obj;  
    }  
 
    public static Object factory(Object obj)  
    {  
        Class<?> cls = obj.getClass();  
 
        return Proxy.newProxyInstance(cls.getClassLoader(),  
                cls.getInterfaces(), new VectorProxy(obj));  
    }  
 
    public Object invoke(Object proxy, Method method, Object[] args)  
            throws Throwable  
    {  
        System.out.println("before calling " + method);  
 
        if (args != null)