为什么红色部分不是Proxy?谁能解释下原理和作用么，不太明白，虽然我知道这么写

Class clazzProxy1 =Proxy.getProxyClass(Collection.class.getClassLoader(), Collection.class);
Constructor constructor = clazzProxy1.getConstructor(InvocationHandler.class);
Collection proxy2 =(Collection)constructor.newInstance(new InvocationHandler(){
   @Override
   public Object invoke(Object proxy, Method method, Object[] args)
     throws Throwable {
    // TODO Auto-generated method stub
    return null;
   }  
  });

为什么红色部分不是Proxy?谁能解释下原理和作用么，不太明白，虽然我知道这么写

Class clazzProxy1 =Proxy.getProxyClass(Collection.class.getClassLoader(), Collection.class);
Constructor constructor = clazzProxy1.getConstructor(InvocationHandler.class);
Collection proxy2 =(Collection)constructor.newInstance(new InvocationHandler(){
   @Override
   public Object invoke(Object proxy, Method method, Object[] args)
     throws Throwable {
    // TODO Auto-generated method stub
    return null;
   }  
  });