How to get Service Ticket when we have TGT using java.

[Veeru]

Hi,
  We are implementing WS Kerberos authentication using java. We went
throught the sample providied @
http://services.iic.ac.in/kbase/docs/java2/guide/security/jgss/tutorials/AcnOnly.html

We have setup Fedora Core 3 and krb5-server and configured. When we run
the sample code it gets authenticated successfully, but my question is
:

How to get Kerberos Service Ticket after logging in succesfully and
getting the TGT using java 1.4.2_04 and Fedora Core 3 [krb5-server]

LoginContext lc ...
..
lc.login();

after this step,
we can say lc.getSubject() which contains the kerberos ticket, now
using this how do we get the service ticket.


Googled for help, but not much help.

Another Question :
went through
http://www-128.ibm.com/developerworks/java/library/j-gssapi/.
Why do we need to write both server and client ?.

Thanks in advance,
/Veeru.