The Model:- System State & Business Logic JavaBeans

·         A model represents appication's data and state and contains the business logic for accessing and manipulating that data.
·         where data that is part of the persistent state of the application.
·         ActionForm bean represents the Model state and not at a persistent level.The controller can accessed model services effecting a change in the model state. 
·         The model notifies the view when a state change occurs in the model.


·         Set of one or more JavaBeans represents the internal state of the system .Entity Enterprise JavaBeans (Entity EJBs) are also commonly used to represent internal state.
·         The actions are part of Controller

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