ya there is a simple approach
u r using ejb  through weblogic( through JNDI),
just set the weblogic  properties in ur swing client
and through lookup method get the reference of bean object and call appropriate
method of ur bean class.

if you are using a swing appication ,
and you want to use ejb  , simply you can use
jndi for looking up the jndi name that you specified
for your ejb in the deployment descriptor.
and call ejb method from your swing application.
you do not neeed to use servlet!