JSP tag addition and subtraction possible?

Question

Hi, I need urgent help. I am not a jsp guru pretty much all the java work I have done for the past 6 years has been backend stuff. I am now having to maintain a JSP/Struts/Spring/Hibernate project which I am not familar with (any of the technologies!!!!).
Most of the fixes required for the project have been small issues (adjusting a query here and there - changing a heading on a jsp page etc). I have a problem where a value being displayed in a column is incorrect.
Consider the problem where you have an available amount, a used amount, and a total amount. Currently it is showing the used amount and the total amount when it should be displaying the available amount and total amount.
Is it possible to do something like available amount = total - used?
          <c:forEach var="stat" items="${locationStats}">
          <tr>
               <td class="label"><c:out value="${stat.statCode.name}" /></td>
               <td class="value"><c:out value="${stat.amount}" /></td>
               <td class="value"><c:out value="${stat.total}" /></td>                         
          </tr>
          </c:forEach>so what i need would be ${stat.total} - ${stat.amount}. Is this possible?
They are both int datatypes.
          <c:forEach var="stat" items="${locationStats}">
          <tr>
               <td class="label"><c:out value="${stat.statCode.name}" /></td>
               <td class="value"><c:out value="${stat.total} - ${stat.amount}" /></td>
               <td class="value"><c:out value="${stat.total}" /></td>                         
          </tr>
          </c:forEach>Here is the kicker I am not actually able to test this code....so if someone can tell me whether this will work I can send it off to our QA department.

Answer 1

c) you need <td class="value"><c:out
value="${stat.total  - stat.amount}" /></td>
If value of stat.total = 100 and stat.amount = 90, it would display the difference 10 (which is what the OP wants)
as opposed to "${stat.total} - ${stat.amount}" in the OP's post which would display
100-90.
Good catch, pgeuns :)
Note in my post, I had ${j-i} as opossed to ${j} - $ which was exactly the point Pgeuns made too.
cheers,
ram.