The simple answer is that Java supports polymorphism. This allows you to hide an
object's true type behind a superclass. Or, in this case, an interface.
> Kenia Nimesh wrote:
>
> in the function
>
> public void doPost(HttpServletRequest req,HttpServletResponse res)
> throws .....
> {
>
> }
>
> Interfaces can't be instantiated.
> HttpServletRequest and HttpServletResponse are both interfaces ....Right!
> So how can we pass an object of these interfaces to the doPost method??
>
> Also that HttpServletRequest extends ServletRequest . Since both of these are
>interfaces they have abstract methods which are just declared ..So where are all the
> methods like getParameter(), getMethod() defined???
>
> Please help me to solve this basic problem
>
> Nimesh
>
>
>
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