"ypsilon" wrote : Can you point me to a scenario where the classloader would lead to a ClassCastException? Does this only occur upon redeployments? | Correct, in general | public class DoesntGetRedeployed | { | public static Collection staticCollection = ...; | } | | public class CodeThatGetsRedeployed | { | public void doSomethingBeforeRedeploy() | { | DoesntGetRedeployed.add(this); | } | | public void doSomethingAfterRedeploy() | { | Object x = DoesntGetRedeployed.get(); | // x instanceof CodeThatGetsRedeployed == false | } | } | Although, I'd be impressed if you could come up with such a situation WITHIN A TRANSACTION! :-) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4029419#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...