login question

[Huaxin]

In the example of "webapp/admin", the Tomcat Administration
Tools asked me for username and password everytime. What
value should i type in? I looked at the source code and find
no where this thing is specified. I think it is a "Realm"
thing, but still don't know where to start from. Would any
one point the file that contain the username/password for me?

thanx a lot