So I am doing something like this for numbers:
<c:set var="n" value="${n+1}"/>
Is there an equivalent for incrementing a letter? If 'a', then set as 'b', if 'd' then set as 'e' ? Something like:
<c:set var="c" value="${c++}"/>
The top answer here seems to have it. I would suggest using a scriptlet to get it done. This will let you execute and embed simple java function calls in your JSP
<c:set var="c" value="<%=Character.toChars( ## int value of c++ ##)%>"/>