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Struts Interview Questions and Answers

Ques 6. What are the core classes of Struts?

Action, ActionForm, ActionServlet, ActionMapping, ActionForward are basic classes of Structs.

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Ques 7. What is the design role played by Struts?
The role played by Structs is controller in Model/View/Controller(MVC) style. The View is played by JSP and Model is played by JDBC or generic data source classes. The Struts controller is a set of programmable components that allow developers to define exactly how the application interacts with the user.
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Ques 8. How Struts control data flow?
Struts implements the MVC/Layers pattern through the use of ActionForwards and ActionMappings to keep control-flow decisions out of presentation layer.
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Ques 9. What configuration files are used in Struts?
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Ques 10. What helpers in the form of JSP pages are provided in Struts framework?
Ans. There are 4 major JSTLs (JSP Standard Tag Libraries) provided in Struts as JSP helpers. Those tag libraries are described in TLD (Tag Library Descriptor) files:

struts-html.tld - Tags to help generating HTML elements.
struts-form.tld - Tags to help generating HTML FORM elements.
struts-bean.tld - Tags representing some JavaBeans like: cookie, header, message, and page.
struts-logic.tld - Tags representing Boolean logic operations.
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