Top "El" questions

How to check isNumeric / isNumber in JSTL?

How to do this simple check in JSTL (without extending any Java classes and additional JSP functions). I need it …

jsp jstl el isnumeric

JSF 2: Using enums in the rendered attribute

Is there any way to check declaratively whether an enum has a specified value. For example: <h:graphicImage name="…

jsf enums jsf-2 el

JSTL fmt:formatNumber

How do I format a variable with <fmt:formatNumber> ? I'm learning JSTL and converting from old Struts tags. …

java jsp jstl el scriptlet

Difference between JSP EL, JSF EL and Unified EL

I would like to know the detailed difference between the Expression Languages (EL). There is JSP EL, JSF EL and …

jsp jsf jakarta-ee el

How to set -Dorg.apache.el.parser.COERCE_TO_ZERO=false programmatically

This question is similar to: jsf: integer property binded to a inputtext in UI is set to zero on submit …

jsf tomcat el jvm-arguments managed-bean

Specify conditional rendering of element inside <ui:repeat>? The <c:if> does not seem to work

I am trying to conditionally build a custom list using <ui:repeat>. On every occurrence of -1 as …

jsf jsf-2 jstl el uirepeat

Testing if a BigDecimal value is zero in a JSP EL Expression

The following does not always behave as you would expect: <c:if test="${someBigDecimal == 0}"> If someBigDecimal has a …

java jsp el bigdecimal

Java: how to name boolean properties

I just had a little surprise in a Webapp, where I'm using EL in .jsp pages. I added a boolean …

java jsp el

Java: How to evaluate an EL expression - standalone (outside any web framework) without implementing interfaces?

I'd like to use EL in my application. But I can't find any howto. I usually end up needing some …

java el evaluation

Illegal Syntax for Set Operation

I have a problem in connecting My xhtml page to the managed bean, the action on the commandButton works but …

jsf cdi el managed-bean