Question
What is difference between ServletResponse sendRedirect() and RequestDispatcher forward() method
Answers
• RequestDispatcher forward() is used to forward the same request to another resource whereas ServletResponse sendRedirect() is a two step process. In sendRedirect(), web application returns the response to client with status code 302 (redirect) with URL to send the request. The request sent is a completely new request.

• forward() is handled internally by the container whereas sednRedirect() is handled by browser.

• We should use forward() when accessing resources in the same application because it’s faster than sendRedirect() method that required an extra network call.

• In forward() browser is unaware of the actual processing resource and the URL in address bar remains same whereas in sendRedirect() URL in address bar change to the forwarded resource.

• forward() can’t be used to invoke a servlet in another context, we can only use sendRedirect() in this case.   Your Comment




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