core class of the Struts Framework
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ActionServlet
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ActionJsp
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ActionClass
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Action
A
Correct answer
Explanation
ActionServlet is the core controller class in Struts Framework - it serves as the front controller that receives all HTTP requests and routes them to appropriate Action classes. ActionServlet is responsible for initializing the framework, populating configuration from struts-config.xml, and managing the request processing lifecycle. Action (Option D) is a class developers extend, not the core controller. Options B and C don't exist in Struts.