This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Struts is just a set of custom tag libs. You call ejbs from your struts actions as you would from any normal web app. As for examples: its unlikely anyone here will post example code in response to a question like this - its not what these forums are about. Have a hunt around the internet - there are plenty of examples out there.