Thanks for reply....
I asked this because when I prepared for EJB; I started with EJB 2.1 & then looked into EJB 3.
Although there might be good demand for EJB 2.1 in real world, but I realized that I could start directly with EJB 3.
Learning JAX-RPC won't be harmful; but I am bit confused & not able to make decision
Thanks again for reply....