I'm trying to populate a group of checkboxes from enum values. I've gotten it working so that it displays properly (all checkboxes properly appear) but I get a converter exception when I submit the form. I wasn't able to find any examples of selectMany anything in the example apps, so forgive me if this is a basic question! Anyway, here's the exception I'm seeing: | [ExceptionFilter] exception root cause | java.lang.NullPointerException | at org.apache.myfaces.shared_impl.renderkit._SharedRendererUtils.getConvertedUISelectManyValue(_SharedRendererUtils.java:147) | at org.apache.myfaces.shared_impl.renderkit.RendererUtils.getConvertedUISelectManyValue(RendererUtils.java:673) | at org.apache.myfaces.shared_impl.renderkit.html.HtmlCheckboxRendererBase.getConvertedValue(HtmlCheckboxRendererBase.java:299) | at javax.faces.component.UISelectMany.getConvertedValue(UISelectMany.java:326) | at javax.faces.component.UIInput.validate(UIInput.java:349) | at javax.faces.component.UISelectMany.validate(UISelectMany.java:315) | at javax.faces.component.UIInput.processValidators(UIInput.java:183) | at javax.faces.component.UIForm.processValidators(UIForm.java:70) | at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:624) | at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:146) | at org.ajax4jsf.framework.ajax.AjaxViewRoot.access$201(AjaxViewRoot.java:53) | My SFSB looks like this (only relevant bits included): | private ValidationCategory [] validationCategories; | | public ValidationCategory [] getValidationCategories() { | return validationCategories; | } | | public ValidationCategory [] getAllValidationCategories() { | return ValidationCategory.values(); | } | | public void setValidationCategories(ValidationCategory [] validationCategories) { | System.out.println("Setting val categories. Size is " + validationCategories.length); | this.validationCategories = validationCategories; | } | And the facelets section for the form is this: | <h:form id="productTypeForm"> | <h:selectManyCheckbox id="productTypes" value="#{feedMapping.validationCategories}"> | <s:selectItems value="#{feedMapping.allValidationCategories}" | var="item" label="${item.name}" /> | </h:selectManyCheckbox> | <div> | <h:commandButton value="Continue" | action="#{feedMapping.selectProductTypes}"> | <s:conversationId /> | </h:commandButton> | </div> | </h:form> | I've tried several permuations of how to represent the selected values: as a List and in this case as an [] since I found a JSF forum post saying this was how it worked. s:selectItems is supposed to automatically register a converter for Enums, and it seems to be working for rendering the group. But can anyone suggest how I could capture the selected results? Thanks! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4026491#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...