MessageMethod does not have an usable constructor for the return type if msg is not first parameter --------------------------------------------------------------------------------------------------- Key: LOGTOOL-64 URL: https://issues.jboss.org/browse/LOGTOOL-64 Project: Log Tool Issue Type: Bug Security Level: Public(Everyone can see) Affects Versions: 1.1.0.Final Reporter: Norman Maurer Assignee: James Perkins If you try to to define a Exception that has the msg as second argument it will fail with: java: MessageMethod does not have an usable constructor for the return type javax.websocket.EncodeException. The EncodeException has the signature: EncodeException(Object obj, String msg) So I tried to define it as: @Message(id = 3008, value="No suitable encoder found") EncodeException noSuitableEncoder(@Param Object obj);