Check multiple list sizes in JSTL

Question

How do I chain multple length checks?

I tried these ways to no effect:

<c:if test="${fn:length(app.applicationAdminComments) le 0  or fn:length(app.applicationChoComments) le 0  }"> 

and

<c:if test="${(fn:length(app.applicationAdminComments) le 0)  || (fn:length(app.applicationChoComments) le 0 )}">

but neither is working.

Answer 1

If you don't get an error, the possible causes are:

• app.applicationAdminComments is null
• app.applicationChoComments is null
• length of app.applicationAdminComments is 0
• length of app.applicationChoComments is 0