Question - Explain the difference between forward and sendRedirect?
Answer -
When a forward request is called, the request is sent to a different resource on the server, without the client being informed that a different resource is going to process the request. This process occurs completely with in the web container.
When a sendRedirtect method is invoked, it causes the web container to return to the browser indicating that a new URL should be requested. Since the browser issues a completely new request any objects that are stored as request attributes before the redirect occurs will be lost. This extra round trip a redirect is slower than forward.