Can an EJB client application access to EJBs on two domains concurrently?

Question

It is well-known that there can be multiple domains in a SUN application server. If two domains are started up, can the same EJB client application call different EJB methods from the two domains? If can, how to implement? Please kindly give a snippet of sample codes.
Another question: can EJBs among multiple domains communicate with each other? If can, tell me how to implement and had better provide some sample codes as well.

Answer 1

I have my client working now!
I was looking around on other forums and found a guy who said that javax.comm has problems with security. here is the address
http://lists.dalsemi.com/maillists/java-powered-ibutton/2002-February/002168.html
He said,
"This is an error generated by the javax.comm packages when initializing
the
serial ports. It's basically a security related bug. Officially, all
packages stored in your lib/ext folder should be considered trusted
code,
running with the same permissions as your trusted main application. But
it
seems that isn't the case with comm.jar.
I've heard that signing the comm.jar file might fix it, but I wasn't
able to
verify that myself (but I didn't test with Netscape's java plugin). I
found
a workaround that should take care of it (as long as your main
application
has "all-permissions"). Try adding this line to the top of your main
method:
System.setSecurityManager(null);
So I did that and it worked except for one thing. at the end of my program the client tells me
The system cannot find the path specified.
Do you think this is a major problem? What is it trying to find??
Michael B