What is the difference between response.sendRedirect() and request.getRequestDispatcher().forward(request,response) [duplicate]

Answer 1

Redirect and Request dispatcher are two different methods to move form one page to another. if we are using redirect to a new page actually a new request is happening from the client side itself to the new page. so we can see the change in the URL. Since redirection is a new request the old request values are not available here.