Get values out of multidimensional arrayList

Question

I hope somebody can help me. I am writing a java servlet with jsps of a supervisor calendar showing the current month plus 12 months, marking the days that people have scheduled vacation. I have the data loaded into the arrayList, but am having trouble getting it back out to display on the relevant dates of the calendar.
My jsp is successfully calling this ArrayList:
ArrayList empPriorPto = (ArrayList)session.getAttribute("empPriorPto");
which gives me these values (they will of course change sizes in real life):
empPriorPto=[[PtoDay: empId = 50514, ptoDate = 2010-6-12, ptoType = P, ptoLength = 1.0]]
empPriorPto=[[]]
empPriorPto=[[PtoDay: empId = 197, ptoDate = 2010-7-23, ptoType = P, ptoLength = 1.0]]I need to put this in a loop of months such as (condensed here, but I think you can get the idea):
for (int days=1; days <= daysInMonth; days++) {
if(empPriorPto != null) {
   for(int i=0; i < empAndrewIdList.size(); i++){
     ArrayList empPriorPto = new ArrayList();
     empPriorPto.add(ptoDAO.findPtoFromToday((String) empAndrewIdList.get(i)));
     session.setAttribute("empPriorPto", empPriorPto);
    for(int k = 0; k < empPriorPto.size(); k++ ){
       ArrayList p =(ArrayList)empPriorPto.get(k);
       System.out.println("p="+p.get(k).toString());      
     } // close i < empPriorPto.size()
  } //close if != null   p.get(k).toString() gives me this:
p=PtoDay: empId = 50514, ptoDate = 2010-6-13, ptoType = P, ptoLength = 1.0which doesn't help. I need something like empPriorPto.ptoDays.getPtoDate().compareTo, but can't find anything..
I have searched for alternatives, but the best answer I found uses a newer jdk than I have, I believe I have 1.4 and when I tried it I got an error that says I need 1.5.
Sorry for being so stupid. Any help would be appreciated.

Answer 1

This is what I have now, which is working, but only for the first person in the array. It is giving me all their vacation, but not moving on to the next person. Sorry for the formatting, it's difficult to get them lined up.:
  for (int days=1; days <= daysInMonth; days++) {
     if(empPriorPto != null) {
        for(int k = 0; k < empPriorPto.size(); k++ ){
           ArrayList p =(ArrayList)empPriorPto.get(k);
           if(pointer < p.size() ){
              PtoDay ptoDays = (PtoDay)p.get(pointer);
              if(ptoDays.getPtoDate().compareTo(showCal.get(Calendar.YEAR)+"-"+showCal.get(Calendar.MONTH)+"-"+showCal.get(Calendar.DATE))==0){ %>
       <th class=calendar><%=days%>NEED EMPLOYEE NAME HERE
     <%  pointer++;
              }else { %>
       <th class=calendar><%=days%>
     <%  }
      }else { %>
        <th class=calendar><%=days%>
<% }
  } // close k < empPriorPto.size()
} else { %>
    <th class=calendar><%=days%>
<% } %>