Managed Beans are a Java class that consists of a set of getter/setter methods and properties. It acts as a model to the JSF framework and offers functionalities like,
* Component data validation
* Manage the execution of a component event
* Processing to decide what page application navigates next
* JSF use managed beans either by configuring them into an XML file or through annotations.
Following scopes are used for managed bean class :
* Application
* Session
* View
* Request
* None
* Custom
