In order to avoid the refresh of Kerberos Tickets above, you could use a keytab like this:
gss-jaas.conf
com.sun.security.jgss.initiate {
com.sun.security.auth.module.Krb5LoginModule required
storeKey=true
useKeyTab=true
keyTab=mykeytab.keytab
principal=myprincipal_krb
doNotPrompt=true
debug=true ;
};