How is this used? No wiki, no source examples, no Javadoc... just a .jar fi

Directory JFreeChart wrapper for Vaadin
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How is this used? No wiki, no source examples, no Javadoc… just a .jar file containing the binary.

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The Vaadin specific API should be so simple that it can be used with IDE. JFreeChart part is JFreeChart API. Buy their documentation to get started.