I'm trying to implement ACL's in my webapp, and am having trouble
applying what I read in the docs and in my googling to my real-life
application.  Could somebody please point me to a good tutorial or some
example code that shows how to set and check the permissions (read only

Does anyone have the source code for the RC2 algorithm written in
Java?
Thanks,
Marc

ok
so I'm trying to store a key for late for later use with a password
and i can get as far as saving and retrieving it. but can't use it
again

I'm currently trying to configure Tomcat to only allow a user to log
in once.  If the same user tries to log in when already logged in
(from another machine for example) I want to cancel the login request
and present an explanation to the user.  I'm using the FORM based

I distribute a signed applet to at least 100 users.  Until recently,
as long as users agreed to the "confirm trusted applet", there was no
problem.
As of Java SE 6, the users are no longer prompted about the Trusted