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Strings in java | String Immutability Concept & Methods -1 | Java Tutorial

on August 15, 2020

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MVC2 Architecture

Mvc2 : The MVC2 (Model-View-Controller) architecture is a way of decomposing an application into three parts: 1.Model 2.View 3.Controller 1.Model : The model component which deals with data munipulation in application.model involved in executing bussiness logic. model having set of services.using model we are going to deal with business logic of our application.Application.Data processing logic and persistance logic avilable with model component. 2.View : The view is responsible for rendering the state of the model.It is used to submit the user's data to model and present the result back to the user after processing. 3.Controller : Controller acts as a interface between model and view.Controller process the business logic using model based on the request. Controller responsible to call view based on the result from the model.It acts as a central unit in mvc architecture. Struts follows Mvc2 architecture

Struts follows mvc2

Struts follows Mvc2 In struts ActonServlet acts as controller.it is responsible to proecess all the requests.so we have to configure Actionservlet in web.xml of our struts application. When user sends a request.Container checks for url pattern in web.xml.It forwards the request to ActionServlet which is configured in web.xml as a load on start up resource.Action servlet using helper class named RequestProcessor to create formbean object and populate submited form data into formbean properties.If there is a form bean object in request scope it will never create object.if not it will create form bean object.Then that form bean will be placed in the request scope. action org.apache.struts.action.ActionServlet config /WEB-INF/struts-config.xml 1 ActionServlet is a servlet it is encapsulates ActionServlet is responsible to create Formbean and Action classes by using Struts-config.xml file. We can validate our form in formbean class.O...

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Strings in java | String Immutability Concept & Methods -1 | Java Tutorial

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