I’m using the JFreeChart wrapper for Vaadin add-on, and I’m currently upgrading to Vaadin 7.
The info page for that add-on states that Vaadin 7 is not supported, but I downloaded the source code and discovered that someone “Vaadin 7 port by Magnolia International Ltd.” already ported it to Vaadin 7. I’ve got it working in my application. Why not make a Vaadin 7 compatible download available?
/Anders