{"id":135353,"date":"2024-05-09T12:19:18","date_gmt":"2024-05-09T06:49:18","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=135353"},"modified":"2024-05-09T12:19:18","modified_gmt":"2024-05-09T06:49:18","slug":"student-management-system-using-mvc-orm-part-4","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/student-management-system-using-mvc-orm-part-4\/","title":{"rendered":"Advanced Java Project – Student Management System using MVC ORM Part – 4"},"content":{"rendered":"

Program 3<\/h3>\n
\/*\r\n * To change this license header, choose License Headers in Project Properties.\r\n * To change this template file, choose Tools | Templates\r\n * and open the template in the editor.\r\n *\/\r\n\r\npackage controller;\r\n\r\nimport dao.StudentDAO;\r\nimport java.io.IOException;\r\nimport java.io.PrintWriter;\r\nimport javax.servlet.ServletException;\r\nimport javax.servlet.http.HttpServlet;\r\nimport javax.servlet.http.HttpServletRequest;\r\nimport javax.servlet.http.HttpServletResponse;\r\nimport javax.servlet.http.HttpSession;\r\nimport model.Student;\r\n\r\n\r\npublic class DisplayUpdate extends HttpServlet {\r\n\r\n    protected void processRequest(HttpServletRequest request, HttpServletResponse response)\r\n            throws ServletException, IOException {\r\n        response.setContentType(\"text\/html;charset=UTF-8\");\r\n        PrintWriter out = response.getWriter();\r\n        try {\r\n            \/* TODO output your page here. You may use following sample code. *\/\r\n            out.println(\"<!DOCTYPE html>\");\r\n            out.println(\"<html>\");\r\n            out.println(\"<head>\");\r\n            out.println(\"<title>Servlet DisplayUpdate<\/title>\");            \r\n            out.println(\"<\/head>\");\r\n            out.println(\"<body>\");\r\n            int rn;\r\n            rn=Integer.parseInt(request.getParameter(\"txtRno\"));\r\n            StudentDAO sd=new StudentDAO();\r\n            Student S;\r\n            S=sd.searchByRno(rn);\r\n            if(S==null)\r\n                out.println(\"<font color=red size=7>Record not found<\/font>\");\r\n            else\r\n            {\r\n                out.println(\"<center>\");\r\n                out.println(\"<form method=post action=UpdateData>\");\r\n                out.println(\"<table border=1>\");\r\n                out.println(\"<tr>\");\r\n                out.println(\"<th>Roll No<\/th>\");\r\n                out.println(\"<th>Name<\/th>\");\r\n                out.println(\"<th>Physics<\/th>\");\r\n                out.println(\"<th>Chemistry<\/th>\");\r\n                out.println(\"<th>Maths<\/th>\");\r\n                out.println(\"<\/tr>\");\r\n                out.println(\"<tr>\");\r\n                out.println(\"<td>\"+S.getRno()+\"<\/td>\");\r\n                 HttpSession session=request.getSession(true);\r\n                 session.setAttribute(\"rollno\", S.getRno());\r\n                out.println(\"<td><input type=text name=txtName value=\"+S.getName()+\"><\/td>\");\r\n                out.println(\"<td><input type=text name=txtPhy value=\"+S.getPhy()+\"><\/td>\");\r\n                out.println(\"<td><input type=text name=txtChem value=\"+S.getChem()+\"><\/td>\");\r\n                out.println(\"<td><input type=text name=txtMath value=\"+S.getMath()+\"><\/td>\");\r\n                out.println(\"<td><input type=submit value=Update><\/td>\");\r\n                        \r\n                out.println(\"<\/tr>\");\r\n                out.println(\"<\/table>\");\r\n                out.println(\"<\/form>\");\r\n                out.println(\"<\/center>\");\r\n            }\r\n           \r\n            out.println(\"<\/body>\");\r\n            out.println(\"<\/html>\");\r\n        }\r\n        catch(Exception e)\r\n        {\r\n            out.println(e);\r\n        }\r\n    }\r\n\r\n    \r\n    @Override\r\n    protected void doGet(HttpServletRequest request, HttpServletResponse response)\r\n            throws ServletException, IOException {\r\n        processRequest(request, response);\r\n    }\r\n\r\n    \r\n    @Override\r\n    protected void doPost(HttpServletRequest request, HttpServletResponse response)\r\n            throws ServletException, IOException {\r\n        processRequest(request, response);\r\n    }\r\n\r\n    \r\n    @Override\r\n    public String getServletInfo() {\r\n        return \"Short description\";\r\n    }\/\/ <\/editor-fold>\r\n\r\n}<\/pre>\n
Program 4<\/h3>\n
\/*\r\n * To change this license header, choose License Headers in Project Properties.\r\n * To change this template file, choose Tools | Templates\r\n * and open the template in the editor.\r\n *\/\r\n\r\npackage controller;\r\n\r\nimport dao.StudentDAO;\r\nimport java.io.IOException;\r\nimport java.io.PrintWriter;\r\nimport javax.servlet.ServletException;\r\nimport javax.servlet.http.HttpServlet;\r\nimport javax.servlet.http.HttpServletRequest;\r\nimport javax.servlet.http.HttpServletResponse;\r\nimport javax.servlet.http.HttpSession;\r\nimport model.Student;\r\n\r\n\/**\r\n *\r\n * @author admin\r\n *\/\r\npublic class UpdateData extends HttpServlet {\r\n\r\n    \/**\r\n     * Processes requests for both HTTP <code>GET<\/code> and <code>POST<\/code>\r\n     * methods.\r\n     *\r\n     * @param request servlet request\r\n     * @param response servlet response\r\n     * @throws ServletException if a servlet-specific error occurs\r\n     * @throws IOException if an I\/O error occurs\r\n     *\/\r\n    protected void processRequest(HttpServletRequest request, HttpServletResponse response)\r\n            throws ServletException, IOException {\r\n        response.setContentType(\"text\/html;charset=UTF-8\");\r\n        try (PrintWriter out = response.getWriter()) {\r\n            \/* TODO output your page here. You may use following sample code. *\/\r\n            out.println(\"<!DOCTYPE html>\");\r\n            out.println(\"<html>\");\r\n            out.println(\"<head>\");\r\n            out.println(\"<title>Servlet UpdateData<\/title>\");            \r\n            out.println(\"<\/head>\");\r\n            out.println(\"<body>\");\r\n            int rno,phy,chem,math;\r\n            String name;\r\n            HttpSession session=request.getSession();\r\n            rno=Integer.parseInt(session.getAttribute(\"rollno\").toString());\r\n            name=request.getParameter(\"txtName\");\r\n            phy=Integer.parseInt(request.getParameter(\"txtPhy\"));\r\n            chem=Integer.parseInt(request.getParameter(\"txtChem\"));\r\n            math=Integer.parseInt(request.getParameter(\"txtMath\"));\r\n            \/\/out.println(rno + \"  \"+name + \"  \"+ phy + \"  \" + chem+\"  \"+math);\r\n            Student S=new Student();\r\n            S.setRno(rno);\r\n            S.setName(name);\r\n            S.setPhy(phy);\r\n            S.setChem(chem);\r\n            S.setMath(math);\r\n            \r\n            StudentDAO sd=new StudentDAO();\r\n            if(sd.updateStudent(S))\r\n                out.println(\"<font color=green size=7>record updated.........<\/font>\");\r\n            out.println(\"<\/body>\");\r\n            out.println(\"<\/html>\");\r\n        }\r\n    }\r\n\r\n    \/\/ <editor-fold defaultstate=\"collapsed\" desc=\"HttpServlet methods. Click on the + sign on the left to edit the code.\">\r\n    \/**\r\n     * Handles the HTTP <code>GET<\/code> method.\r\n     *\r\n     * @param request servlet request\r\n     * @param response servlet response\r\n     * @throws ServletException if a servlet-specific error occurs\r\n     * @throws IOException if an I\/O error occurs\r\n     *\/\r\n    @Override\r\n    protected void doGet(HttpServletRequest request, HttpServletResponse response)\r\n            throws ServletException, IOException {\r\n        processRequest(request, response);\r\n    }\r\n\r\n    \/**\r\n     * Handles the HTTP <code>POST<\/code> method.\r\n     *\r\n     * @param request servlet request\r\n     * @param response servlet response\r\n     * @throws ServletException if a servlet-specific error occurs\r\n     * @throws IOException if an I\/O error occurs\r\n     *\/\r\n    @Override\r\n    protected void doPost(HttpServletRequest request, HttpServletResponse response)\r\n            throws ServletException, IOException {\r\n        processRequest(request, response);\r\n    }\r\n\r\n    \/**\r\n     * Returns a short description of the servlet.\r\n     *\r\n     * @return a String containing servlet description\r\n     *\/\r\n    @Override\r\n    public String getServletInfo() {\r\n        return \"Short description\";\r\n    }\/\/ <\/editor-fold>\r\n\r\n}<\/pre>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
Program 3 \/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. *\/...<\/p>\n","protected":false},"author":86671,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31448],"tags":[31873,31871,31872,31915,31936,31937,25318,31933],"class_list":["post-135353","post","type-post","status-publish","format-standard","hentry","category-advanced-java-tutorials","tag-advanced-java","tag-advanced-java-practical","tag-advanced-java-program","tag-advanced-java-project","tag-advanced-java-student-management-system-project","tag-advanced-java-student-management-system-using-mvc-orm","tag-student-management-system","tag-student-management-system-using-mvc-orm"],"yoast_head":"\nAdvanced Java Project - Student Management System using MVC ORM Part - 4 - DataFlair<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/data-flair.training\/blogs\/student-management-system-using-mvc-orm-part-4\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Advanced Java Project - 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