Java版的报表源码，非常好用，作图很漂亮-jfreechart

jfreechart1.013开发包,能够开发非常漂亮的报表,可以用于创建很多图表,时间序列图,柱形图等等.-Contain:jfreechart-1.0.13.jar and jcommon-1.0.15.jar.They can be used to create beatiful reports and many charts.such as bars and timeseries and so on.

利用java 生成Excel 饼状图的jar包 -Using java to generate Excel pie chart