Evaluate empty or null JSTL c tagsHow can I validate if a String is null or empty using the c tags of JSTL? I have a variable named var1 and I can display it, but I want to add a comparator to validate it. <c:out value="${var1}" /> I want to validate when it is null or empty (my values are string type).
How do I use a <c:out ...> tag in my <input ...> tag? [Solved] (JSP forum at Coderanch)
