Session Beans

Session Beans are suitable when:

• The state of the bean is not persistent
• To implement business logic or workflow
• To mediate between the client and other components (façade)

Stateful Session Beans are appropriate when:

• The bean must manage conversational state across method invocations

Stateless Session Beans are appropriate when:

• There is no need for conversational state. Stateless session beans are often used as façades to other components

Entity Beans

Entity Beans are suitable when:

• The bean represents a business entity, not a flow
• The bean’s state must be persistent beyond that of the application server.

• shopping cart

• credit card authorization
• session façade

• Order
• Account
• Customer