运行jfreechart Demo

1、http://www.jfree.org/jfreechart/index.html下载：jfreechart

2、解压缩：jar   -xvf   jfreechart-0.9.20.zip

3、运行jfreechart   demo   :   java   -jar   jfreechart-demo.jar
    或者：java   -classpath   lib/jcommon-0.9.5.jar:jfreechart-0.9.20.jar:jfreechart-0.9.20-demo.jar   org.jfree.chart.demo.JFreeChartDemo