Interface: import javax.ejb.Local; | import java.util.List; | | @Local | public interface BrokenListIfa { | | public List getTestData(); | public void destroy(); | | } | Bean: | import org.jboss.seam.annotations.datamodel.DataModel; | import org.jboss.seam.annotations.Name; | import java.util.ArrayList; | import java.util.List; | import org.jboss.seam.ScopeType; | import javax.ejb.Stateful; | import org.jboss.seam.annotations.Scope; | import org.jboss.seam.annotations.Destroy; | import javax.ejb.Remove; | | @Name("brokenList") | @Stateful | public class BrokenList implements BrokenListIfa { | | @DataModel | public List getTestData() { | List l = new ArrayList(); | l.add("ONE"); | l.add("TWO"); | return l; | } | | @Remove @Destroy | public void destroy() { | } | | } | View: <h:dataTable value="#{brokenList.testData}" var="d"> | <h:column> | <h:outputText value="#{d}" /> | </h:column> | </h:dataTable> Partial stacktrace (see first post for more detail):anonymous wrote : [...]Caused by: java.lang.IllegalArgumentException: Could not invoke method by reflection: BrokenList.getTestData() with parameters: (java.util.ArrayList) on: org.jboss.seam.example.pdf.BrokenList | at org.jboss.seam.util.Reflections.invoke(Reflections.java:31) | at org.jboss.seam.Component.setPropertyValue(Component.java:1656) | ... 108 more | Caused by: java.lang.IllegalArgumentException: wrong number of arguments | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) | at java.lang.reflect.Method.invoke(Method.java:597) | at org.jboss.seam.util.Reflections.invoke(Reflections.java:21) | ... 109 more | I must point out that the super-simple test throws the exception but actually renders the expected list. In our application I get the same exception but it doesn't render the page, I suppose because of configuration but am not shure. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4070232#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...