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    What is the difference between ManagedBean & Backing Bean in Oracle ADF?


        Both are same,but strictly speaking it is a Managed Bean. 

    Managed Bean is "Simply a Java Class in which User Interface specific methods can be written".

    The reason for the two terms is that if a Managed Bean has a one to one mapping with a page & includes methods to access the UI components on that page,Then you can think of that Managed Bean as "backing" that page[i.e., Backing Bean].
    Here Backing Bean Scope is limited to that page but Managed Bean scope is more than one.

    Here One to one Mapping Means"Allowing the pairing of each page uniquely with  a Java class"

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