This is occuring from inside an ActionForm validate
method, not an Action class.
m
--- "Richard J. Duncan" <[EMAIL PROTECTED]> wrote:
> Do you have the ActionErrors instance bound to an
> instance variable in the class:
>
> public class MyAction extends Action {
> ..
> private ActionMessages messages;
>
> }
>
> Struts treats each Action class as a singleton -
> there is only one instance ever created. As such an
> instance variable is not thread-safe and if multiple
> threads call the action, they'll be using the same
> ActionMessages instance.
>
> Regards,
>
> Rich
>
> -----Original Message-----
> From: Michael Ruppin [mailto:[EMAIL PROTECTED]
> Sent: Friday, June 20, 2003 12:29 PM
> To: Struts Users Mailing List
> Subject: java.util.ConcurrentModificationException
> at
>
org.apache.struts.action.ActionMessages.add(ActionMessages.java:185)
>
> I'm getting the following, using 1.1-rc1
> ActionMessages.add(ActionMessages messages):
>
> [6/20/03 11:15:23:344 CDT] 2d4fa5a WebGroup E
> SRVE0026E: [Servlet Error]-[AxisPortalServlet]:
> java.util.ConcurrentModificationException
> at
>
java.util.AbstractList$Itr.checkForComodification(AbstractList.java(Inlined
> Compiled Code))
> at
>
java.util.AbstractList$Itr.next(AbstractList.java(Compiled
> Code))
> at
>
org.apache.struts.action.ActionMessages.add(ActionMessages.java:185)
>
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