JAVA Swing使用JFreeChart实现折线图绘制：https://www.lmlphp.com/user/58010/article/item/2179348/
官网：https://www.jfree.org/jfreechart/
git：https://github.com/jfree/jfreechart
标签：jfree,www,java,jfreechart,https,swing,折线图 From： https://www.cnblogs.com/2008nmj/p/17549729.html