Error on SessionClient of JAAS Example

[wxwang]

Hello

I ran the example on my JBoss Server 4.01RC2.

It is fine to access from web, but I have got an error for using SessionClient.

java.lang.SecurityException: ???????????????
 at com.sun.security.auth.login.ConfigFile.<init>(ConfigFile.java:97)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
 at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
 at java.lang.Class.newInstance0(Class.java:308)
 at java.lang.Class.newInstance(Class.java:261)
 at javax.security.auth.login.Configuration$3.run(Configuration.java:221)
 at java.security.AccessController.doPrivileged(Native Method)
 at javax.security.auth.login.Configuration.getConfiguration(Configuration.java:215)
 at javax.security.auth.login.LoginContext$1.run(LoginContext.java:170)
 at java.security.AccessController.doPrivileged(Native Method)
 at javax.security.auth.login.LoginContext.init(LoginContext.java:167)
 at javax.security.auth.login.LoginContext.<init>(LoginContext.java:404)
 at org.jboss.docs.jaas.howto.SessionClient.main(SessionClient.java:65)
Caused by: java.io.IOException: ???????????????
 at com.sun.security.auth.login.ConfigFile.init(ConfigFile.java:206)
 at com.sun.security.auth.login.ConfigFile.<init>(ConfigFile.java:95)
 ... 14 more

Could anybody tell me how to fix it?
Thank you

[wxwang]

I see.
I need put the #-Djava.security.auth.login.config=file:c:/jaashowto/example/resources/auth.conf" in the command line.

But I am going to use it in Applet.
So what shall I deal with this? How could I write a AppletClient?

Thanks

[wxwang]

I am doing by this way

The program calls System.setProperty() and put "java.security.auth.login.config" and value in.

Is it OK?