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You already know that there are two different types of bean—stateful and stateless. You'll be learning about both types today, first, the simpler stateless bean. The Agency bean from the case study will be used for the example code.
Stateless beans hold no state for any particular client, but they do have a lifecycle—and thus different states—imposed on them by the EJB architecture. Specifically, these are the interactions between the bean and the container in which it has been deployed.