retrieve data from database and show in table Java web by using MVC

currently im working on the project that require to shows the data from database and im already found a lot of tutorial video but it seems not working therefore i try to post my question here and look for the problem in my code

Model code

 public ArrayList<admin> getAllTrain()
       {
             ArrayList<admin> list = new ArrayList<admin>();
            try {
            dbConnection conn = new dbConnection();
            Connection myConnection = conn.Connection();

            String sql = "SELECT * FROM train";
            Statement st = myConnection.createStatement();
            ResultSet rs = st.executeQuery(sql);

            while(rs.next())
            {
                admin a = new admin();
              a.setTid(rs.getString("tid"));
              a.setSloc(rs.getString("sloc"));
              a.setEloc(rs.getString("eloc"));
              a.setStime(rs.getString("stime"));
              a.setEtime(rs.getString("etime"));
              a.setSdate(rs.getString("sdate"));
              a.setEdate(rs.getString("edate"));
              a.setStop(rs.getString("stop"));
              a.setSeat(rs.getString("seat"));
              a.setPrice(rs.getString("price"));
              list.add(a);

            }
             st.close();
             myConnection.close();

         } catch (SQLException ex) {
        Logger.getLogger(admin.class.getName()).log(Level.SEVERE, null, ex);
    }

       return list;

   }

Servlet Code

      admin a = new admin();
             List<admin> list = a.getAllTrain();
             request.setAttribute("list", list);
                     request.getRequestDispatcher("trainManagement.jsp").forward(request, response);

JSP Code

     <form name ="frmShowData" action ="editTrainControl" >
                                            <table border ="1">
                                              <thead>
                                             <tr>
                                            <th colspan ="10"><center><h4><b>Train Details</b></h4></center></th>
                                             </tr>
                                              </thead> 
                                             <th>Train ID </th>
                                             <th>Departure Location </th>
                                             <th>Arrival Location </th>
                                             <th>Departure Time </th>
                                             <th>Arrival Time </th>
                                             <th>Departure Date </th>
                                             <th>Arrival Date </th>
                                             <th>Number of Stop </th>
                                             <th>Number of Seat </th>
                                             <th>Price </th>
                                             <c:forEach items ="${requestScope.list}" var="admin">
                                             <tr>
                                             <td><a href = "${pageContext.request.contextPath}/insertTrainControl?tid = ${admin.getTid()}">${admin.getTid()}</a></td>
                                             <td>${admin.getSloc()}</td>
                                             <td>${admin.getEloc()}</td>
                                             <td>${admin.getStime()}</td>
                                             <td>${admin.getEtime()}</td>
                                             <td>${admin.getSdate()}</td>
                                             <td>${admin.getEdate()}</td>
                                             <td>${admin.getStop()}</td>
                                             <td>${admin.getSeat()}</td>
                                             <td>${admin.getPrice()}</td>
                                             </tr>
                                             </c:forEach>
                                            </table>
                                        </form>

when i run the page there is nothing shows in the table and there is no error message in the netbean also.