Question

I have a parameter of user that I am setting equal to -1 if this param is not given. I only want to show the table if the parameter is fulfilled ( for instance if user = 1 ).

• so using an “if” statement…..can I just do something like this:

ex:

if(user >= 1){
<table>
<tr>
.....
</tr>
</table>
}

Is this possible, or how would you recommend doing this?

Answer 1

Request parameters are as a Map<String, String> available by ${param} in EL. So a request parameter with the name user is available by ${param.user}.

JSTL provides the core tags like <c:if> to control the flow in the page.

So, 1 + 1 = …

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
...
<c:if test="${param.user > 0}">
    <table>
        ...
    </table>
</c:if>