qinglonghai的专栏

实例：public class DrawColumnHistogram { public String draw(String path,double[] d1) {        CategoryDataset dataset = createDataset(d1);        JFreeChart chart = ChartFactory.createBarChart(    ...

public class DrawLineHistogram { int width;// 图象宽度 int height; // 图象高度 String chartTitle;// 图表标题 String subtitle;// 副标题 String xTitle;// X轴标题 String yTitle;// Y轴标题 String[] cutline;// 图例...