jfreechart-1.0.13-deom源代码jar运行程序运行该文件需要安装jdk1.6版本一上-jfreechart-1.0.13-deom source code run the program to run the jar file needs to be installed on a jdk1.6 version of the

用java绘制各种图表的开源程序，有柱状图，饼状图-Draw a variety of charts with the java open source, there are histograms, pie charts, etc.