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Editorial Team
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Asked: 2026-05-30T04:21:02+00:00

I want to know about setting and un-setting the session in JSF2.0. Although following

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I want to know about setting and un-setting the session in JSF2.0. Although following some blogs and books (Core JavaServer Faces-3rd Edition), i got to know that using annotation @SessionScoped we can set any manage bean to be in session. I have a loginBean which is @ManagedBean and SessionScoped declared. On the top right corner, my web has login button.
When this session is created (i am not setting it manually, that is why i am confused) and when i gets destroyed? It must be destroyed either by time out or by clicking in logout button only.

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  1. Editorial Team

    JSF uses the Servlet API under the covers. A session scoped managed bean is in essence set as an attribute of the HttpSession. It will be created and set whenever the EL expression referencing the managed bean #{sessionBean} is evaluated for the first time. It will be “removed” from the session whenever the session expires (by either a restart of the client or a timeout in the server) or get invalidated. If you let your logout button call ExternalContext#invalidateSession(), then the session will be invalidated.

    If you’re familiar with the basic Servlet API, you should already understand how this all works. For an in-depth explanation of the Servlet’s HttpSession works under JSF’s covers, read this answer: How do servlets work? Instantiation, sessions, shared variables and multithreading.

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