title: Cannot display servlet values in JSP
body: <p>Long story short, I cannot get my servlet variable to display in my JSP page. I have tried methods like</p>
  
  <pre><code> &lt;p&gt;&lt;$= request.getAttribute("foo") %&gt;&lt;/p&gt;
  </code></pre>
  
  <p>as well as</p>
  
  <pre><code>  &lt;p&gt;"${foo}"&lt;/p&gt;
  </code></pre>
  
  <p>and importing the page at the top, with and without.</p>
  
  <p>My servlet (commented where the test var is, towards the bottom):</p>
  
  <pre><code>@Override
  protected void doGet(HttpServletRequest request, HttpServletResponse response)
          throws ServletException, IOException
  {
      //String that gets returned as HTML
      StringBuilder returnAsHTML = new StringBuilder();
  
      //Cycles through the parameter(s) sent from the serialized form
      Enumeration&lt;String&gt; parameterNames;
  
      //Holds all of the parameter(s) values
      LinkedList&lt;String&gt; valuesIn = new LinkedList&lt;String&gt;();
  
      //Gets all of the parameter names from the serialized form
      parameterNames = request.getParameterNames();
  
      //Iterate through the enumeration of the parameters
      while(parameterNames.hasMoreElements())
      {
          String currentParameter = parameterNames.nextElement();
          String currentValue = request.getParameter(currentParameter);
  
          //Prevent a blank value from being added from the text fields (which is what they default to
          //if the user didn't enter anything for "Section:" or "Teacher:").
          if(!currentValue.contentEquals(""))
          {
              valuesIn.add(currentValue);
          }//Else doNothing();
      }
  
      //Set the section to query, if the user wanted one to search for
      if(request.getParameter("section").isEmpty())
      {
          sectionToQuery = "";
      }
      else
      {
          sectionToQuery = request.getParameter("section").toUpperCase();
      }
  
      //Set the teacher to query, if the user wanted one to search for
      if(request.getParameter("teacher").isEmpty())
      {
          teacherToQuery = "";
      }
      else
      {
          teacherToQuery = request.getParameter("teacher").toUpperCase();
      }
  
      //THIS BEGINS THE QUERY - BE SURE TO BREAK THIS DOWN TO OTHER METHODS
  
      //STAGE 1 See what semesters they are needing, eliminate the ones they don't need.
      resultSet = determineSemesters(valuesIn);
  
      //STAGE 2 See what locations they are needing, eliminate the ones they don't need.
      determineLocations(resultSet, valuesIn);
  
      //STAGE 3 See what sections they are needing, eliminate the ones they don't need.
      determineSections(resultSet, valuesIn);
  
      //STAGE 4 See what instructors they are needing, eliminate the ones they don't need.
      determineInstructors(resultSet, valuesIn);
  
      //STAGE 5 See if they want to include closed classes or not, eliminate what they don't need.
      determineClosedOrNotClosedCourses(resultSet, valuesIn);
  
      //SEARCH IS DONE, the remaining elements in "resultSet" are the product of their search. Find
      //The enrollment and the credits that is in resultSet.
  
      //THIS IS WHERE I AM TESTING IT////////////////
      int foo = 20;
      request.setAttribute("foo", foo);
  
      //Check to see if the result set is empty
      if(resultSet.isEmpty())
      {
          returnAsHTML.setLength(0);
          returnAsHTML.append("&lt;tr&gt;&lt;td colspan='15'&gt;&lt;h1&gt;No Results...&lt;/h1&gt;&lt;/tr&gt;");
      }
      else//It's not empty, so style the classes.
      {
          //Make sure results are sorted
          Collections.sort(resultSet);
  
          //Style all the classes
          for(ClassInfo classes : resultSet)
          {
             returnAsHTML.append(styleClass(classes));
          }//End styling of classes
      }
  
      //Send back the result
      response.getWriter().write(returnAsHTML.toString());
  
  }
  </code></pre>
  
  <p>Being new to JSP, I have some ideas. In the examples I have seen, it seems that people use response.sendRedirect() or something along those lines with redirecting or forwarding the page. Another is that maybe because I have not casted the int as a String. Any thoughts?</p>