(jfreechart is an open source technology used to display graphics in java, the more commonly used pie charts, bar charts, etc., this is the source code, reference meaning
jfreechart--demo\demo\pages\1.jsp
jfreechart--demo\demo\pages\welcome.jsp
jfreechart--demo\demo\WEB-INF\classes\demo\action\MultipleChartAction.class
jfreechart--demo\demo\WEB-INF\classes\demo\action\PieMonthAction.class
jfreechart--demo\demo\WEB-INF\classes\demo\chart\MultipleChart.class
jfreechart--demo\demo\WEB-INF\classes\demo\chart\MultipleChartDataset.class
jfreechart--demo\demo\WEB-INF\classes\demo\chart\WebChart.class
jfreechart--demo\demo\WEB-INF\classes\demo\chart\WebChartDataset.class
jfreechart--demo\demo\WEB-INF\classes\demo\test\WebChartTest.class
jfreechart--demo\demo\WEB-INF\classes\demo\test\WebChartTest2.class
jfreechart--demo\demo\WEB-INF\classes\resources\application.properties
jfreechart--demo\demo\WEB-INF\config\struts-config.xml
jfreechart--demo\demo\WEB-INF\config\tiles-defs.xml
jfreechart--demo\demo\WEB-INF\config\validation.xml
jfreechart--demo\demo\WEB-INF\config\validator-rules.xml
jfreechart--demo\demo\WEB-INF\lib\jfreechart-1.0.0-rc1\META-INF\MANIFEST.MF
jfreechart--demo\demo\WEB-INF\lib\jfreechart-1.0.0-rc1\org\jfree\chart\annotations\AbstractXYAnnotation.class
jfreechart--demo\demo\WEB-INF\lib\jfreechart-1.0.0-rc1\org\jfree\chart\annotations\CategoryAnnotation.class
jfreechart--demo\demo\WEB-INF\lib\jfreechart-1.0.0-rc1\org\jfree\chart\annotations\CategoryTextAnnotation.class
jfreechart--demo\demo\WEB-INF\lib\jfreechart-1.0.0-rc1\org\jfree\chart\annotations\TextAnnotation.class
jfreechart--demo\demo\WEB-INF\lib\jfreechart-1.0.0-rc1\org\jfree\chart\annotations\XYAnnotation.class
jfreechart--demo\demo\WEB-INF\lib\jfreechart-1.0.0-rc1\org\jfree\chart\annotations\XYBoxAnnotation.class
jfreechart--demo\demo\WEB-INF\lib\jfreechart-1.0.0-rc1\org\jfree\chart\annotations\XYDrawableAnnotation.class
jfreechart--demo\demo\WEB-INF\lib\jfreechart-1.0.0-rc1\org\jfree\chart\annotations\XYImageAnnotation.class
jfreechart--demo\demo\WEB-INF\lib\jfreechart-1.0.0-rc1\org\jfree\chart\annotations\XYLineAnnotation.class
jfreechart--demo\demo\WEB-INF\lib\jfreechart-1.0.0-rc1\org\jfree\chart\annotations\XYPointerAnnotation.class
jfreechart--demo\demo\WEB-INF\lib\jfreechart-1.0.0-rc1\org\jfree\chart\annotations\XYPolygonAnnotation.class
jfreechart--demo\demo\WEB-INF\lib\jfreechart-1.0.0-rc1\org\jfree\chart\annotations\XYShapeAnnotation.class
jfreechart--demo\demo\WEB-INF\lib\jfreechart-1.0.0-rc1\org\jfree\chart\annotations\XYTextAnnotation.class
jfreechart--demo\demo\WEB-INF\lib\jfreechart-1.0.0-rc1\org\jfree\chart\axis\Axis.class
.....too many files .....)