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Editorial Team
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Asked: 2026-05-27T22:29:12+00:00

I’m developing an application using jsf2 and facelets . In one of my views

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I’m developing an application using jsf2 and facelets. In one of my views I try to display data from a database and I use two nested loops. The second loop uses a var which is an attribute of the var declared for the first loop.

But it’s not working.

Here is the relevant part of my code:

<ui:repeat value="#{MyBean.Vect}" var="item">
     <h:outputText value="${item.attr}" /> <br />
     <ui:repeat value="#{item.nestedtVect}" var="product" >
         <h:outputText value="${product.name}" /> <br />
     </ui:repeat>
</ui:repeat>

The first loop works but not both.

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1 Answer

  1. Editorial Team

    Are you sure item.nestedtVect is not null and actually has items? Your Facelet seems to be correct at first sight.

    E.g. consider this minimal example:

    Backing bean:

    @ManagedBean
public class NestedLoopBacking {

    String[][] items = { {"A", "B"}, {"1", "2", "3"} };

    public String[][] getItems() {
        return items;
    }
}

    Facelet:

    <html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:ui="http://java.sun.com/jsf/facelets">

    <h:body>

        <ui:repeat value="#{nestedLoopBacking.items}" var="item">
            <ui:repeat value="#{item}" var="content">
                <h:outputText value="${content}" />
                <br />
            </ui:repeat>
        </ui:repeat>

    </h:body>
</html>

    This Just Works™. You might want to put in an explicit test to see if your nested collection is empty or not:

    <h:outputText value="Collection empty" rendered="#{empty item.nestedtVect}"/>
<h:outputText value="Collection not empty" rendered="#{!empty item.nestedtVect}"/>

    p.s.

    Unrelated to the question, but you might want to look at your naming. MyBean.Vect is not a really good name, and neither is attr in item.attr. Also, you seem to mix deferred and immediate syntax (#{} and ${}) for no apparent reason.

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