login authentication

[nirjari patel]

<form method=post action="j_security_check" >
    <input type="text"  name= "j_username" >
    <input type="password"  name= "j_password" >
</form>

when I am using j_security_check , j_username and j_password, how do I get these functionalities in my application ? Where can I download them from ? Are they part of some API ? which API ?
what kind of framework do I need to use these functionalities ?

thanks

[Seetharaman Venkatasamy]

google for "Form Based Authentication in tomcat"

[chandra kambham]

All the required authentication mechanism will be provided by the Tomcat server Itself. No need to download any other things.

[Anuj Prashar]

You also need to declare in DD that you are using form based authentication as following

<login-config>
<auth-method>FORM</auth-method>
<form-login-config>
<form-login-page>/loginPage.html</form-login-page>
<form-error-page>/loginError.html</form-error-page>
</form-login-config>
</login-config>