[ https://issues.jboss.org/browse/JBWS-4019?page=com.atlassian.jira.plugin.... ] R Searls commented on JBWS-4019: -------------------------------- This is not a bug. It is the user's miss definition of a lambda. User code {code:java} DataHandler dh = (DataHandler) attachments .values() .iterator() .next(); {code} The use of .iterator() and .next(); is incorrect. The code should be something like this {code:java} attachments.values() .foreach(new Consumer<DataHandler>() { public void accept(DataHandler s) { System.out.println(s); } }); {code} -- This message was sent by Atlassian JIRA (v7.5.0#75005)