Java Server Faces Question:
Explain JSF life cycle?
Answer:
The JavaServer Faces page is similar to JSP page in terms of their life cycle.
When user makes a request, the life cycle of a JSF web application, starts.
Several tasks are performed by JSF when a user submits a page. These tasks include data validation, data type conversion, etc.
A JSF application supports two kinds of responses and two kinds of requests.
Faces response:
Request processing life cycle creates a servlet response by the execution of the Render Response Phase of the.
Non-Faces response:
A servlet response is not created by the execution of the render response phase.
Faces request:
A servlet request is sent from a previously generated Faces response. E.g.: The request URI in the form submission from a JSF UI component, identifies the JSF component tree to use for processing the request.
Non-Faces request:
A servlet request is sent to an application component, such as a servlet or JSP page, rather than directed to a JavaServer Faces component tree.
The steps in the life cycle of a JSF application are:
1. Restore View Phase
2. Apply Request Value Phase
3. Process Validations Phase
4. Update Model Value Phase
5. Invoke Application Phase
6. Render Response Phase
When user makes a request, the life cycle of a JSF web application, starts.
Several tasks are performed by JSF when a user submits a page. These tasks include data validation, data type conversion, etc.
A JSF application supports two kinds of responses and two kinds of requests.
Faces response:
Request processing life cycle creates a servlet response by the execution of the Render Response Phase of the.
Non-Faces response:
A servlet response is not created by the execution of the render response phase.
Faces request:
A servlet request is sent from a previously generated Faces response. E.g.: The request URI in the form submission from a JSF UI component, identifies the JSF component tree to use for processing the request.
Non-Faces request:
A servlet request is sent to an application component, such as a servlet or JSP page, rather than directed to a JavaServer Faces component tree.
The steps in the life cycle of a JSF application are:
1. Restore View Phase
2. Apply Request Value Phase
3. Process Validations Phase
4. Update Model Value Phase
5. Invoke Application Phase
6. Render Response Phase
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