What is the JSF life cycle and its phases?

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Answered by suresh

The JSF Life Cycle and Its Phases

Understanding the JavaServer Faces (JSF) life cycle is crucial for developing applications using JSF framework. The JSF life cycle consists of six phases that define how a JSF application processes an HTTP request and produces a response. The phases of the JSF life cycle are:

  1. Restore View
  2. Apply Request Values
  3. Process Validations
  4. Update Model Values
  5. Invoke Application
  6. Render Response

During the Restore View phase, JSF checks if there is an existing view for the request and if not, creates a new one. In the Apply Request Values phase, the submitted form data is applied to the view components. The Process Validations phase validates the input data.

The Update Model Values phase updates the model with the validated values. In the Invoke Application phase, the application logic is executed. Finally, the Render Response phase creates the response to be sent back to the client.

Understanding and effectively managing the JSF life cycle can lead to optimized performance and user experience in JSF applications.

Answer for Question: What is the JSF life cycle and its phases?