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.
Well that depends. It really is up to the Application Server. You don't need to synchronize anything, because the App server ahndles it for you here. And the EJB Object depeneds on Pooling. Either the App Server has a pool of EJB Objects, or a single instance, it is still thread-safe, because the App Server handles that. Mark