Question

This expression tag outpus a correct value for me
<%=drug.NonAuthoritative%>

while I cant recover the value of drug.NonAuthoritative for use in a C tag

<c:if test="${drug.NonAuthoritative}">&nbsp;<bean:message key="WriteScript.msgNonAuthoritative"></bean:message></c:if>

the method is

public Boolean NonAuthoritative() {
    return nonAuthoritative;
}

Answer 1

There are 2 problems:

1. Scriptlets and EL do not share the same scope. The drug in ${drug} has to match the name of an existing attribute in the page, request, session or application scope. If you’re preparing drug in a scriptlet instead of in a controller, then you should put it as an attribute in one of those scopes yourself.

   <% 
       Drug drug = new Drug();
       // ...
       request.setAttribute("drug", drug);
   %>
   

   ---

2. (as partly answered by Nathan), EL relies on Javabeans specification. The ${drug.propertyName} requires a public method getPropertyName() for non-boolean properties or isPropertyName() for boolean properties. So, this should do

   public class Drug {
   
       private boolean nonAuthorative;
   
       public boolean isNonAuthorative() {
           return nonAuthorative;
       }
   
       // ...
   }
   

   with

   <c:if test="${drug.nonAuthoritative}">
   

   (pay attention to the casing!)