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What do you mean stateful and stateless session bean?

Stateful Session bean:-

  • Stateful session bean maintain the state of the conversation between the client and itself
  • When the client invokes a method on the bean the instance variables of the bean may contain a state but only for the duration of the invocation
  • implements the javax.ejb.SessionBean interface and is deployed with the declarative attribute "stateful"

Stateless session bean:-

  • A stateless session bean is an enterprise bean that provides a stateless service to the client.
  • Conceptually, the business methods on a stateless session bean are similar to procedural applications or static methods; there is no instance state, so all the data needed to execute the method is provided by the method arguments
  • implements the javax.ejb.SessionBean interface and is deployed with the declarative attribute "stateless

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Author:
Shivprasad Koirala
We conduct training for Java/J2EE technologies like design patterns, J2EE, Struts, Hibernate, Spring, Rich Interface etc. and likes to write articles on the same in free time.
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