Stateless session beans for stateless services. Looks like a stateful session bean. Lifecycle from client point of view, no need for explicit discarding of the state. Lifecycle from container point of view, no need for activation and passivation.

// Business interface dependency injection
// Instance per session
@EJB Cart cart;

// Business interface naming service lookup
// Instance per session
@Resource SessionContext ctx;
Cart cart = (Cart) ctx.lookup (“cart”);

// Home interface dependency injection
// Instance created explicitly
@EJB CartHome cartHome;
Cart cart = cartHome.createLargeCart (...);

// Home interface naming service lookup
// Instance created explicitly
@Resource SessionContext ctx;
CartHome cartHome = (CartHome) ctx.lookup (“cartHome”);
Cart cart = cartHome.createLargeCart (...);