Vaadin Application Server Class Loader Workaround | Vaadin

Library for working around problems with too eager class loaders in certain application servers

Deploy this jar file along with the vaadin.jar if you are experiencing problems such as

java.lang.NoClassDefFoundError: com/google/gwt/user/client/ui/HasWidgets

or similar when deploying a Vaadin application. Typically the exception is caused by class loaders (too) eagerly loading the class that a @ClientWidget annotation refers to. This compatibility jar provides dummy implementations of these classes.

Do not use this jar during development. This jar should never be on the same classpath as gwt-user.jar/gwt-dev.jar.

Note! This jar is only needed for Vaadin 6. Vaadin 7 uses a @Connect annotation on the client side to avoid this problem.


Link to this version
StableReleased 14 March 2013Apache License 2.0
Framework Support
Vaadin 6.6+
Install with
Release notes - Version 1.0.1

Add some missing classes.