如何使用Jfreechart绘制日常图表

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartFrame;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.DefaultCategoryDataset;

public class LineChartDemo {
    public static void main(String[] args) {
        // 创建一个数据集
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        dataset.setValue(10, "Series 1", "Jan");
        dataset.setValue(20, "Series 1", "Feb");
        dataset.setValue(30, "Series 1", "Mar");
        dataset.setValue(40, "Series 1", "Apr");
        dataset.setValue(50, "Series 1", "May");
        dataset.setValue(60, "Series 1", "Jun");
        dataset.setValue(70, "Series 1", "Jul");
        dataset.setValue(80, "Series 1", "Aug");
        dataset.setValue(90, "Series 1", "Sep");
        dataset.setValue(100, "Series 1", "Oct");
        dataset.setValue(110, "Series 1", "Nov");
        dataset.setValue(120, "Series 1", "Dec");

        // 创建一个JFreeChart对象
        JFreeChart chart = ChartFactory.createLineChart("Line Chart Demo", "Month", "Value", dataset, PlotOrientation.VERTICAL, true, true, false);

        // 显示图表
        ChartFrame frame = new ChartFrame("Line Chart Demo", chart);
        frame.pack();
        frame.setVisible(true);
    }
}