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Project Architecture's

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1.) Functional flow/ Architecture a.) Only for 6+/7+years b.) Explain the flow of process/business 2.) Technical Flow/Architecture a.) Upto 5+ years b.) Explain technologies /components that are involved in the project Servlet & JSP Project Architecture:- 1.)What is need of Business Deligate to convert VO class object to DTO class object ? a.) If Business Deligate is not there servlet component directly prepares DTO class object by receiving and translating form data and passes to service class, if service class excepts certain input in other format like numeric employee number as string employee number then we need to modify servlet component code i.e For the changes that happened in business tier service component we have to modify servlet component of presentation tier b.) If Business Deligate is taken then it gets original form data as VO class object having string inputs and converts VO class object to DTO class object to pass to service class c.) If serv...
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JSP Life Cycle

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a.)InstantiationEvent(when container creates JES class object) Life cycle methods These life cycle methods will be called through servlet life cycle method(init(ServletConfig)) 1.) jspInit()->for programmers initailization logic 2.) _jspInit()->for container initialization logic b.)Request Processing Event Life cycle methods These method will be called through servlet life cycle method 1st service(req,res) 1.) _jspService(-,-) c.)Destruction Event(When container is about to destroy JES class object) Life cycle methods These methods will be called through destroy() life cycle method of servlet component 1.) jspDestroy()-->for programmer 2.) _jspDestroy()-->for container JSP life cycle methods are called through servlet life cycle methods with support of JES class super class(HttpJspBase in tomcat server) Two phases of JSP a.)Phase-1(Translation Phase) Here jsp pages will be translated into an equivalent servlet class...
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JSP Comments

Comments in JSP:- -->Compiler /Interpreter doesn't take commented code for compilation /Interpretation, so the commented code doesn't participate in execution JSP supports 3 types of comments:- a.)HTML comments /Template text comments/ Output comments Syn :- <!---text---> -->Recognized by html interpreter of browser b.)JSP comments /Hidden comments Syn :- <%--text--%> -->JSP page compiler recognize these comments c.)Java comments /Scripting comments Syn :- //-->For single line /*-- -----*/-->For multiple line -->Java compiler(java) recognize these comments -->In Eclipse IDE JES class for first.jsp comes in our(workspace)folder/.metadata/.plugins/.org eclipse Comments (1)JSP comment<%--%> (2)Java comment(// or /*--*/) (3)HTML comments(<!---> JES Source Code (1)No (2)Yes (3)Yes In JES compiled code (1)No (2)No (3)Yes In the code going to browser (1)No (2)No (3)Yes Output (1)No (2)No (3)No -->Jsp c...
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