摘要：使用JFreeChart创建图象 一：jfreechart介绍jfreechart是一个免费创建图片的java工具.可以创建如下图形：饼图(pie charts;)曲线图(line charts )柱状图(horizontal/vertical bar charts)甘特图(Gantt charts; )XY plots and scatter plots; time series, high/low/open/close charts and candle stick charts; combination charts; Pareto charts; bubble charts; wind 阅读全文