Are getParameter and getAttribute interchangeable?

[mohammad shadab]

"can we use getParameter instead of getAttribute in servlet/jsp ???"

[Ahsan Bagwan]

Your question is a bit vague.

Both of these methods have different purposes. If you want to submit a form or send a GET request to the server, you will always need a 'getParameter()' invoked on a request object to obtain form control values.

When you desire to use a value across subsequent page/many pages in an application use 'getAttribute()' and 'setAttribute()' method. For instance if you want to forward a message to a JSP from a servlet you place that message in the request scoped variable using setAttribute().

[mohammad shadab]

Ahsan Bagwan wrote:Your question is a bit vague.

Both of these methods have different purposes. If you want to submit a form or send a GET request to the server, you will always need a 'getParameter()' invoked on a request object to obtain form control values.

When you desire to use a value across subsequent page/many pages in an application use 'getAttribute()' and 'setAttribute()' method. For instance if you want to forward a message to a JSP from a servlet you place that message in the request scoped variable using setAttribute().

as you said "If you want to submit a form or send a GET request to the server, you will always need a 'getParameter()" .is there any thing different for POST request???

[Ahsan Bagwan]

No. I indeed meant POST when I referred to form submission (in the context that you want to change server state (like inserting employee record in db)).

[mohammad shadab]

Ahsan Bagwan wrote:No. I indeed meant POST when I referred to form submission (in the context that you want to change server state (like inserting employee record in db)).

okay thank you ahsan bro...