Category: EJB

Brief description about local interfaces 0

Brief description about local interfaces

EJB was originally designed around remote invocation using the Java Remote Method Invocation (RMI) mechanism, and later extended to support to standard CORBA transport for these calls using RMI/IIOP. This design allowed for maximum...

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EJB : Message Driven Bean [ MDB ]

What is MDB ( Message Driven Bean )? Messaging System Features Technically Message Driven bean Why Messaging? Messaging Applications Example of MDB What is MDB? Messaging has been around for quite a while even...

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EJB 3.0 : Java Persistence API [ JPA ]

What is JPA ( Java Persistence API )? Object-Relational Mapping (ORM) Introduction to Entity Entity Manager API Life Cycle of Entity Entity Listeners and Callbacks Packaging a persistence unit Obtaining an Entity Manager Example...

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EJB 3.0 : Java Persistence API [ JPA ]

What is JPA ( Java Persistence API )? Object-Relational Mapping (ORM) Introduction to Entity Entity Manager API Life Cycle of Entity Entity Listeners and Callbacks Packaging a persistence unit Obtaining an Entity Manager Example...

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EJB 3.0 : Stateful Session Bean

What is Stateful Session Bean? Example OF Stateful Session Bean What is Stateful Session Bean? A stateful bean contains a conversational state that is retained across method calls and transactions. It is having some...

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EJB 3.0 : Stateless Session Bean

What is Stateless Session Bean? Example for Stateless session Bean What is Stateless Session Bean? Stateless session EJBs have the following behaviour: provide a single use service do not maintain state on behalf of...

EJB 3.0 : Enterprise Java Beans 0

EJB 3.0 : Enterprise Java Beans

What is EJB3.0? What is EJB3.0? Persistence is a higher-level abstraction above JDBC. The persistence layer maps objects to database storage so that they can be queried, loaded, updated, or removed without having to...