jfreechar最新jar包 JFreeChart目前是最好的java图形解决方案,基本能够解决目前的图形方面的需求,主要包括如下几个方面: pie charts (2D and 3D):饼图(平面和立体) bar charts (regular and stacked, with an optional 3D effect):柱状图 line and area charts:曲线图 scatter plots and bubble charts time series, high/low/open/close charts and candle st