what is requestDispatcher

[Dharmender Singh]

what is the difference b/w sendRedirect and requestDispatcher

[Christophe Verré]

a request dispatcher implements the RequestDispatcher interface, which contains methods to dispatch a request. Methods like sendRedirect, forward... Check it at http://java.sun.com/j2ee/1.4/docs/api/javax/servlet/RequestDispatcher.html

[Ben Souther]

Dharmender Singh,
Welcome to JavaRanch!

In an effort to help you get the most from our forums, we've compiled a
list of tips for asking questions here. You can find the list in our
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Abbreviations such as "u" or "ur" in
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Again, welcome to JavaRanch and good luck with your question.
-Ben

[Dharmender Singh]

in send redirect the new response object will be sent but in forward coming req res objects will be forwarded

[Rahul Bhattacharjee]

There is no need to post the same message twice.In case you have done os , you can delete one of the messages.

sendRedirect works on the client side.The server sends the browser the URL to which it needs to connect.The browser then makes a fresh connection with the URL.

RequestDispatcher works on the server side.Look for servlet documentation for more information.

Try searching javaranch .This questions has been asked quite a few times before too.