Difference between using Context Object and Request Object with the RequestDispatcher

Context Object with RequestDispatcher	Request Object With RequestDispatcher
1. Using Context object with the getRequestDispatcher() its mandatory to write url starting with " / " .	1. Using Request object with the getRequestDispatcher(), its not mandatory to use " / " before url.
2. It uses the context path of the URI.	2. It uses the context path if we write " / " before url and if we are not writing " / " then the request will be forwarded using relative path.
3. If we are not writing " / " before  url then container will throw IllegalArgumentException exception " This given path is invalid, since it doesn't start with  / " .	3. If we are not writing " / " before url then it forward the request using relative path.
4. For ex- RequestDispatcher   rd = getServletContext(). getRequestDispatcher("/url");	4. For ex- RequestDispatcher   rd = getServletContext(). getRequestDispatcher("/url");                      or RequestDispatcher   rd = getServletContext(). getRequestDispatcher("url") ;

Difference between Shallow and Deep Cloning

Shallow Cloning	Deep Cloning
1. It is a default cloning and can be done by using clone() method.	1.It is done by the user itself by writing the code for the deep cloning.
2. Shallow cloning fails to clone object members.	2. Using deep cloning we can able to clone object member also .

Difference between include and forward of RequestDispatcher in Servlet

include()	forward()
1. It is used to include the response to the source servlet.	1. It is used to forward the request to the other servlet or JSP page.
2. Response get committed after including all other resources(servlet/JSP) responses.	2. Response get committed by the RequestDispatcher object and also close the response stream.
3. A servlet class can have multiple include statement to execute.	3. A servlet class can have multiple forward statement conditionally but will execute only one.
4. After executing include() control will back to the source servlet and will add information to response object.	4. After executing forward() control will back to the source servlet but other informations cannot be added to that response object.