How to set values in a JSP from DTO

Question

My requirement is to print matrix report of students and their subject markets
Student Name | Sub1 Sub 2 ...........
Std Name1
Std Name 2
That is printing subject names horizontally and student names vertically.
<c:forEach items="${dto.subList}" var="item" varStatus="count">
          td><c:out value="${item.sub_name}"/> </td>
</c:forEach>
<tr>
<c:forEach items="${dto.StudentsList}" var="item" varStatus="count">
<c:set value="${count.count}" var="totalstudents"/>
<tr class="odd">
     <td><c:out value="${item.student_name}"/> </td>
<c:forEach items="${dto.subList}" var="item" varStatus="count">
     <c:set value="${dto.marksList}" var="item"/>
      </td>
</c:forEach>     
</tr></c:forEach>
i have done upto this part. wat i need is for each student it needs to check sub1 and soon and put that marks in that sub place

Answer 1

public DTO GenerateMatrixReport(DTO params) throws DAOException
     DTO resultDto = new DTO();
int totalstudents = new Integer(params.get("totalstudents").toString()).intValue();
int totalsubjects = new Integer(params.get("totalsubjects").toString()).intValue();
     for(int i=1;i<=totalstudents;i++)
          List list = new ArrayList();
     for(int j=1;j<=totalsubjects;j++)
               list = new ArrayList();
     list.add(params.get("email"+i));
               list.add(params.get("subject_name"+j));
               list.add(changeDateToDBFormat((String)params.get("start_date")));
                         list.add(changeDateToDBFormat((String)params.get("end_date")));
                         DTO tempDto = super.get("SQL QUERY",list);
                         if(null != tempDto.getDataList());
                              List l1=new ArrayList();
                              l1 = tempDto.getDataList();
                              if(l1 != null)
                                   for(int k=0;k<l1.size();k++)
                                        Map m =(Map)l1.get(k);
                                        m.put("marks",""+new Double(m.get("marks").toString()).doubleValue());
                                        tempList.add(m);
                              else
                                   System.out.println(0);
               resultDto.put("ubjectList",getAllSujectNames());
               resultDto.put("studentsList",getAllStudents());
               resultDto.put("marksList",tempList);
               return resultDto;
          public Collection getAllSujectNames() throws DAOException
               Collection list = new ArrayList();
               DTO resultDto = super.get(Utility.getSQL("getallsubjectnames"),new ArrayList());
               if(null != resultDto.getDataList())
                    List tempList = resultDto.getDataList();
                    for(int i=0;i<tempList.size();i++)
                         Map m = (Map)tempList.get(i);
                         m.put("subject_name",m.get("subject_name"));
                         list.add(m);
               return list;
          public Collection getAllStudents() throws DAOException
               Collection list = new ArrayList();
               DTO resultDto = super.get(Utility.getSQL("getallstudents"),new ArrayList());
               if(null != resultDto.getDataList())
                    List tempList = resultDto.getDataList();
                    for(int i=0;i<tempList.size();i++)
                         Map m = (Map)tempList.get(i);
                         m.put("student_name", m.get("first_name") + " " + m.get("last_name"));
                         m.put("email",m.get("email"));
                         list.add(m);
               return list;
These are the methods iam using ,can u set me the solution to print the values in matrix format