When to use RequestDispatcher.forward() and response.sendRedirect()?

Many people know about how RequestDispatcher.forward() and response.sendRedirect() works. RequestDispatcher.forward() is generally called Server side redirection and is used to forward to a resource within the same application. That resource could be a JSP or another Servlet. response.sendRedirect() is generally called as Client side redirection as it issues a new request from the browser. This method is used to redirect to another resource within the same application or to the resource in some other application running in the same web container or can redirect to any other resource running in someother web container. […]

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