What components are MVC in JSF MVC framework?

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This depends on the point of view (pun intented).

In the big architectural picture, your own JSF code is the V:

M – Business domain/Service layer (e.g. EJB/JPA/DAO)
V – Your JSF code
C – FacesServlet

In the developer picture, the architectural V is in turn dividable as below:

M – Entity
V – Facelets/JSP page
C – Managed bean

In the smaller client picture, the developer V is in turn dividable as below:

M – JSF component tree
V – Rendered HTML output
C – Client (webbrowser)

In the yet smaller JavaScript picture, the client V is in turn dividable as below:

M – HTML DOM tree
V – Visual presentation
C – Event listener functions (enduser interaction and Ajax)

So it’s basically a M(M(M(MVC)C)C)C 😉

Note that some starters and even some —very basic— tutorials mingle/copy/flatten the entity’s properties in the managed bean, which would effectively make the controller a model. Needless to say that this is poor design (i.e. not a clean MVC design).

The code snippets in the following answers illustrate the right MVC approach:

In the book The Definitive Guide to JSF in Java EE 8, in chapter 8 “Backing beans”, page 276, the below Venn diagram is used to illustrate the position of the backing bean in the MVC paradigm within the context relevant to the JSF developer. Copyright disclaimer: book is written by me and picture is created by me.

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