{"id":135357,"date":"2024-05-09T12:22:24","date_gmt":"2024-05-09T06:52:24","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=135357"},"modified":"2024-05-09T12:22:24","modified_gmt":"2024-05-09T06:52:24","slug":"student-management-system-using-mvc-orm-part-5","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/student-management-system-using-mvc-orm-part-5\/","title":{"rendered":"Advanced Java Project &#8211; Student Management System using MVC ORM Part-5"},"content":{"rendered":"<h3>Program 1<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">package dao;\r\n\r\nimport model.Student;\r\nimport java.sql.*;\r\nimport java.util.*;\r\npublic class StudentDAO \r\n{\r\n    public static boolean checkLogin(String user,String pass)\r\n    {\r\n        Connection con=null;\r\n        PreparedStatement ps=null;\r\n        ResultSet rs=null;\r\n      try\r\n      {    \r\n        con=mycon.Myconnection.getConnection();\r\n        String sql;\r\n        sql=\"select * from stlogin where username=? and password=?\";\r\n        ps=con.prepareStatement(sql);\r\n        ps.setString(1, user);\r\n        ps.setString(2, pass);\r\n        rs=ps.executeQuery();\r\n        if(rs.next())\r\n            return true;\r\n      }\r\n      catch(Exception e)\r\n      {\r\n          System.out.println(e);\r\n      }\r\n    return false;            \r\n   }\r\n    public boolean insertStudent(Student S)    \r\n    {\r\n        Connection con=null;\r\n        PreparedStatement ps=null;\r\n      try\r\n      {    \r\n        con=mycon.Myconnection.getConnection();\r\n        String sql;\r\n        sql=\"insert into student values(?,?,?,?,?)\";\r\n        ps=con.prepareStatement(sql);\r\n        ps.setInt(1, S.getRno());\r\n        ps.setString(2, S.getName());\r\n        ps.setInt(3, S.getPhy());\r\n        ps.setInt(4, S.getChem());\r\n        ps.setInt(5, S.getMath());\r\n        if(ps.executeUpdate()&gt;0)\r\n            return true;\r\n      }\r\n      catch(Exception e)\r\n      {\r\n           System.out.println(e);\r\n      }\r\n      return false;         \r\n    }   \r\n    public boolean updateStudent(Student S)\r\n    {\r\n        Connection con=null;\r\n        PreparedStatement ps=null;\r\n      try\r\n      {    \r\n        con=mycon.Myconnection.getConnection();\r\n        String sql;\r\n        sql=\"update student set name=?,phy=?,chem=?,math=? where sno=?\";\r\n        ps=con.prepareStatement(sql);\r\n        ps.setString(1, S.getName());\r\n        ps.setInt(2, S.getPhy());\r\n        ps.setInt(3, S.getChem());\r\n        ps.setInt(4, S.getMath());\r\n        ps.setInt(5, S.getRno());\r\n        if(ps.executeUpdate()&gt;0)\r\n            return true;\r\n      }  \r\n       catch(Exception e)\r\n      {\r\n           System.out.println(e);\r\n      } \r\n     return false;   \r\n    }\r\n    public Student searchByRno(int rno)\r\n    {\r\n     Connection con=null;\r\n     PreparedStatement ps=null;\r\n     ResultSet rs=null;\r\n      Student S=new Student();\r\n     try\r\n     {\r\n         con=mycon.Myconnection.getConnection();\r\n         String sql;\r\n         sql=\"select * from student where sno=?\";\r\n         ps=con.prepareStatement(sql);\r\n         ps.setInt(1,rno);\r\n         rs=ps.executeQuery();\r\n         if(rs.next())\r\n         {\r\n              \r\n             S.setRno(rs.getInt(1));\r\n             S.setName(rs.getString(2));\r\n             S.setPhy(rs.getInt(3));\r\n             S.setChem(rs.getInt(4));\r\n             S.setMath(rs.getInt(5));\r\n         }\r\n         else\r\n             S=null;\r\n     }\r\n     catch(Exception e)\r\n     {\r\n         System.out.println(e);\r\n     }   \r\n     return S;   \r\n    }\r\n  public boolean deleteByRno(int rno)  \r\n  {\r\n      try\r\n      {     \r\n        Connection con=null;\r\n        PreparedStatement ps=null;\r\n        String sql=null;\r\n        con=mycon.Myconnection.getConnection();\r\n        sql=\"delete from student where sno=?\";\r\n        ps=con.prepareStatement(sql);\r\n        ps.setInt(1,rno);\r\n        if(ps.executeUpdate()&gt;0)\r\n            return true;\r\n      }\r\n      catch(Exception e)\r\n      {\r\n          System.out.println(e);\r\n      }\r\n     return false;   \r\n  }\r\n  public List&lt;Student&gt; searchAll()\r\n  {\r\n        Connection con=null;\r\n        PreparedStatement ps=null;\r\n        ResultSet rs=null;\r\n        String sql=null;\r\n        con=mycon.Myconnection.getConnection();\r\n        List&lt;Student&gt;mylist=new ArrayList&lt;Student&gt;();\r\n       try\r\n       {\r\n           sql=\"select * from student\";\r\n           ps=con.prepareStatement(sql);\r\n           rs=ps.executeQuery();\r\n           \r\n           while(rs.next())\r\n           {\r\n             Student S=new Student();\r\n             S.setRno(rs.getInt(1));\r\n             S.setName(rs.getString(2));\r\n             S.setPhy(rs.getInt(3));\r\n             S.setChem(rs.getInt(4));\r\n             S.setMath(rs.getInt(5));\r\n             mylist.add(S);\r\n             \r\n             S=null;\r\n           }\r\n          \r\n       }\r\n       catch(Exception e)\r\n       {\r\n           System.out.println(e);\r\n       }\r\n    return mylist;    \r\n  }       \r\n  }<\/pre>\n<h3>Program 3<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">\/*\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 model.Student;\r\n\r\n\/**\r\n *\r\n * @author admin\r\n *\/\r\npublic class LoginServlet extends HttpServlet {\r\n\r\n    \/**\r\n     * Processes requests for both HTTP &lt;code&gt;GET&lt;\/code&gt; and &lt;code&gt;POST&lt;\/code&gt;\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(\"&lt;!DOCTYPE html&gt;\");\r\n            out.println(\"&lt;html&gt;\");\r\n            out.println(\"&lt;head&gt;\");\r\n            out.println(\"&lt;title&gt;Servlet LoginServlet&lt;\/title&gt;\");            \r\n            out.println(\"&lt;\/head&gt;\");\r\n            out.println(\"&lt;body&gt;\");\r\n             String user,pass;\r\n             user=request.getParameter(\"txtuser\");\r\n             pass=request.getParameter(\"txtpassword\");\r\n\/\/             out.println(user);\r\n\/\/             out.println(pass);\r\n             if(StudentDAO.checkLogin(user, pass))\r\n                   response.sendRedirect(\"HomePage.html\");\r\n             else\r\n                   response.sendRedirect(\"index.html\");\r\n            out.println(\"&lt;\/body&gt;\");\r\n            out.println(\"&lt;\/html&gt;\");\r\n        }\r\n    }\r\n\r\n    \/\/ &lt;editor-fold defaultstate=\"collapsed\" desc=\"HttpServlet methods. Click on the + sign on the left to edit the code.\"&gt;\r\n    \/**\r\n     * Handles the HTTP &lt;code&gt;GET&lt;\/code&gt; 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 &lt;code&gt;POST&lt;\/code&gt; 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    }\/\/ &lt;\/editor-fold&gt;\r\n\r\n}<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Program 1 package dao; 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