How to use a boolean variable in c: if

Question

How to use a boolean variable in c: if

I use this code in JSF .:

<c:if test="#{sV.done.booleanValue()}"> <option value="#{sV.id}" selected="selected">#{sV.text}</option> </c:if> <c:if test="#{not sV.done.booleanValue()}"> <option value="#{sV.id}">#{sV.text}</option> </c:if>

sv is my class containing data (pojo), executed as a Boolean variable, I want to display the option tag with the selected attribute if sV.done is true . But I could not do it. I don’t know where I am mistaken.

Otherwise, there might be something wrong with c , because c:forEach did not work until then in my case on the same page? Could this be the reason? Where am I mistaken?

Each time it displays an option tag without a highlighted attribute .

+8

java jstl jsf

Patriks Oct 6 '12 at 9:31

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4 answers

Try the following: -

 <c:if test="${sV.done == true}">...</c:if> // or <c:if test="${sV.done eq true}">...</c:if> // or <c:if test="${sV.done}">...</c:if> // or

And for denying (if sV.done is false): -

 <c:if test="${! sV.done}">...</c:if> /// OR <c:if test="${not sV.done}">...</c:if> /// OR <c:if test = "${sV.done != true}">...</c:if> // OR <c:if test = "${sV.done ne true}">...</c:if> // OR

Read more about if with operators check this link: - JSTL if

+7

Rohit jain Oct 6 '12 at 9:35

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Your syntax is great if you use EL 2.2. So, none of the JSTL <c:xxx> tags have been interpreted? You need to import the main JSTL tag list. It is not clear which viewing technologies and version of JSTL you are using, so here are some import examples for both JSP and Facelets.

JSP with JSTL 1.0:

 <%@taglib prefix="c" uri="http://java.sun.com/jstl/core" %>

JSP with JSTL 1.1 / 1.2:

 <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

Lyceums 1.x with JSTL 1.1 / 1.2:

 <html ... xmlns:c="http://java.sun.com/jstl/core">

Front 2.x with JSTL 1.2:

 <html ... xmlns:c="http://java.sun.com/jsp/jstl/core">

How to use a boolean variable in c: if

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