html = html.concat(printComment(userName, comment));
html.append(printComment(userName, comment));
  public String listComments(CommentHome home, Integer userId, UserHome uHome)   {    Collection list;    Comment    comment;    String     html;    try     {      list = home.findByToUser(userId);      html = "<br>";      if (list.isEmpty())         html = html.concat(printHTMLHighlighted("<h3>There is no comment yet for this user.</h3>"));      else        html = html.concat(printHTMLHighlighted("<h3>Comments for this user</h3>"));      html = html.concat("<br>");      html = html.concat(printCommentHeader());      // Display each comment and the name of its author      Iterator it = list.iterator();      while (it.hasNext())       {        comment = (Comment)it.next();        String userName;        try        {          User u = uHome.findByPrimaryKey(new UserPK(comment.getFromUserId()));          userName = u.getNickName();          html = html.concat(printComment(userName, comment));        }        catch (Exception e)        {          throw new EJBException("This author does not exist (got exception: " +e+")<br>");        }      }      html = html.concat(printCommentFooter());    }     catch (Exception e)     {      throw new EJBException("Exception getting comment list: " + e +"<br>");    }    return html;  }