Still getting Cannot create LoginContext. access denied

I'm trying tutorial of JAAS, located in

http://java.sun.com/j2se/1.4.2/docs/guide/security/jaas/tutorials/GeneralAcnOnly.html

I made a batch file as runner:

set CLASSPATH=.

java -Djava.security.manager -Djava.security.policy=sample.policy -Djava.security.auth.login.config=sample_jaas.config sample.SampleAcn

I have made some changes for the policy file to work with folders and grant permission to all files

sample.policy contents is:

grant codebase"file:D:/learn/java/jaas-tutorial/classes/sample/-"{

permission javax.security.auth.AuthPermission"createLoginContext.Sample";

permission javax.security.auth.AuthPermission"modifyPrincipals";

};

but still getting the following error:

Cannot create LoginContext. access denied (javax.security.auth.AuthPermission createLoginContext.Sample)

Process exited with exit code -1.

[1041 byte] By [ash_mod2a] at [2007-10-2 11:45:20]