This blog will discuss the JavaServer Faces Lifecycle and its features. Java employs a virtual computer, making it Platform-independent. All APIs and the Java programming language compile into bytecodes. The developers can use the JavaServer Faces framework with ease. With its integrated UI component library, which takes care of most of the difficulties of user interface management, JavaServer Faces technology makes it simple to develop user interfaces. If you need to learn more about the JavaServer face lifecycle and its key features in java.
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What is JavaServer Faces Lifecycle?
The JavaServer Faces application framework allows you to control lifecycle phases but also will enable you to manage them manually. When the client sends an HTTP request for a page to the server, the JavaServer Faces application’s lifecycle starts and ends when the server returns the page.
Two main phases:
- Execute Phase
- Render Phase
1. Execute Phase
The application view is built or rebuilt when the first request is made during the execution phase. Other actions are carries out for different servers, such as updating request parameter values, transcoding component values, validating component values, updating managed beans with component values, and invoking application logic.
Following are more divisions of the execution phase.
- Restore View Phase
- Apply Request Values Phase
- Invoke Application Phase
- Render Response Phase
- Process Validations Phase
- Update Model Values Phase
Restore View Phase
The restore view step of the JavaServer Faces technology starts when a client requests a JavaServer Faces page. During this stage, JSF constructs the requested page’s view, connects its components’ event handlers and validators, and stores the idea in the FacesContext instance.
Invoke Application Phase
JSF manages application-level events during this stage, including processing a form and linking to another page.
Now, the application can call the FacesContext.responseComplete() function if it has to redirect to a different web application resource or produce a response without any JSF components.
The Render Response step then comes under the authority of the JavaServer Faces implementation.
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The request view is render in response to the client browser during this stage. View rendering is a procedure where HTML or XHTML is produce as the output. Therefore, a person can view it in a browser.
During the rendering phase:
- When a client makes the first request for the index.xhtml web page, the application is done.
- After compilation, the process is run, and a new part tree for the application is made and set in a FacesContext.
- The component and the manage bean property, given by the EL expression, are put into the component tree.
- The idea is sent to the client making the request.
- The component tree is automatically removes.
- The component tree is rebuilt, and the set aside state is utilize upon subsequent requests.
So far, we have discussed the JavaServer faces lifecycle and its features. There aren’t many sources where you can quickly learn JSF. On top of the JSF core, you might need to be aware of JSF frameworks like Richfaces, Primefaces, etc. I recommend you join Java Training in Coimbatore to acquire skills in JavaServer Face.
Also Read: Java Interview Questions for Freshers