JFreeChart is a free chart library for Java (GNU LGPL). A new version has just been released at: http://www.object-refinery.com/jfreechart/index.html JFreeChart supports pie charts (2D and 3D), bar charts (with optional 3D effect), line charts, time series charts, high-low-open-close, candlestick charts, bubble plots, combination charts, dual axes and more.
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