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JSF Interview Questions and Answers

Ques. How to pass a parameter to the JSF application using the URL string?
Ans. if you have the following URL: http://your_server/your_app/product.jsf?id=777, you access the passing parameter id with the following lines of java code:

FacesContext fc = FacesContext.getCurrentInstance();
String id = (String) fc.getExternalContext().getRequestParameterMap().get("id");
From the page, you can access the same parameter using the predefined variable with name param. For example,

<h:outputText value="#{param['id']}" />
Note: You have to call the jsf page directly and using the servlet mapping.
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