you can't use it with the current vaadin-version (6.7.1). If you want add t

Directory JFreeChart wrapper for Vaadin
1

you can’t use it with the current vaadin-version (6.7.1). If you want add the JFreeChartWrapper-object there will be a IncompatibleClassChangeError .

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Latest Vaadin is 6.7.6. If it doesn’t work for you, please share some details about your environment.