How to view Secured page using J_Security_Check ?

Dear Everyone,

In the web application, i am using Form based authentication for security...

i have configured exactly by giving login page and error page..

i have also configured <security constraint> , < login -config>...

But i receive error page while i give username and password....

Please give ur suggestions.. i will show u my code..

<security-constraint>

<web-resource-collection>

<web-resource-name>Protected Area</web-resource-name>

<!-- Define the context-relative URL(s) to beprotected -->

<url-pattern>/jack.jsp</url-pattern>

<http-method>GET</http-method>

<http-method>POST</http-method>

</web-resource-collection>

<auth-constraint>

<role-name>user</role-name>

</auth-constraint>

</security-constraint>

<login-config>

<auth-method>FORM</auth-method>

<realm-name>Example Form-Based Authentication Area</realm-name>

<form-login-config>

<form-login-page>/index.jsp</form-login-page>

<form-error-page>/error.jsp</form-error-page>

</form-login-config>

</login-config>

<security-role>

<description>user</description>

<role-name>user</role-name>

</security-role>

[1515 byte] By [senthil_yogaa] at [2007-11-27 9:36:43]