Draw a variety of charts with the java open source, there are histograms, pie charts, etc.

jfreechart-1.0.13\ant\build-swt.xml
.................\...\build.xml
.................\ChangeLog
.................\checkstyle\javadocs.xml
.................\..........\lines.xml
.................\..........\properties.txt
.................\..........\style.xml
.................\..........\whitespace.xml
.................\docfiles\AreaRendererSample.png
.................\........\BarRenderer3DSample.png
.................\........\BarRendererSample.png
.................\........\BoxAndWhiskerRendererSample.png
.................\........\CandleStickRendererSample.png
.................\........\CategoryStepRendererSample.png
.................\........\ClusteredXYBarRendererSample.png
.................\........\DeviationRendererSample.png
.................\........\DialPlotSample.png
.................\........\GanttRendererSample.png
.................\........\GroupedStackedBarRendererSample.png
.................\........\HighLowRendererSample.png
.................\........\IntervalBarRendererSample.png
.................\........\LayeredBarRendererSample.png
.................\........\LevelRendererSample.png
.................\........\LineAndShapeRendererSample.png
.................\........\LineRenderer3DSample.png
.................\........\MinMaxCategoryRendererSample.png
.................\........\PiePlotSample.png
.................\........\ScatterRendererSample.png
.................\........\StackedAreaRendererSample.png
.................\........\StackedBarRenderer3DSample.png
.................\........\StackedBarRendererSample.png
.................\........\StackedXYAreaRenderer2Sample.png
.................\........\StackedXYAreaRendererSample.png
.................\........\StackedXYBarRendererSample.png
.................\........\StatisticalBarRendererSample.png
.................\........\StatisticalLineRendererSample.png
.................\........\VectorRendererSample.png
.................\........\WaterfallBarRendererSample.png
.................\........\WindItemRendererSample.png
.................\........\XYAreaRenderer2Sample.png
.................\........\XYAreaRendererSample.png
.................\........\XYBarRendererSample.png
.................\........\XYBlockRendererSample.png
.................\........\XYBoxAndWhiskerRendererSample.png
.................\........\XYBubbleRendererSample.png
.................\........\XYDifferenceRendererSample.png
.................\........\XYDotRendererSample.png
.................\........\XYErrorRendererSample.png
.................\........\XYLineAndShapeRendererSample.png
.................\........\XYShapeRendererSample.png
.................\........\XYSplineRendererSample.png
.................\........\XYStepAreaRendererSample.png
.................\........\XYStepRendererSample.png
.................\........\YIntervalRendererSample.png
.................\experimental\org\jfree\experimental\chart\demo\CombinedCategoryPlotDemo1.java
.................\............\...\.....\............\.....\....\CombinedXYPlotDemo1.java
.................\............\...\.....\............\.....\plot\CombinedCategoryPlot.java
.................\............\...\.....\............\.....\....\CombinedXYPlot.java
.................\............\...\.....\............\.....\renderer\xy\XYSmoothLineAndShapeRenderer.java
.................\jfreechart-1.0.13-demo.jar
.................\lib\gnujaxp.jar
.................\...\iText-2.1.5.jar
.................\...\jcommon-1.0.16.jar
.................\...\jfreechart-1.0.13-experimental.jar
.................\...\jfreechart-1.0.13-swt.jar
.................\...\jfreechart-1.0.13.jar
.................\...\junit.jar
.................\...\servlet.jar
.................\...\swtgraphics2d.jar
.................\licence-LGPL.txt
.................\maven-jfreechart-project.xml
.................\NEWS
.................\README.txt
.................\source\org\jfree\chart\annotations\AbstractXYAnnotation.java
.................\......\...\.....\.....\...........\CategoryAnnotation.java
.................\......\...\.....\.....\...........\CategoryLineAnnotation.java
.......

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