import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;
import java.io.File;
import java.io.IOException;import javax.swing.JPanel;import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.StandardChartTheme;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;public class CoreNeibor extends ApplicationFrame {public CoreNeibor(String s) {super(s);setContentPane(createDemoLine());}public static void main(String[] args) {CoreNeibor fjc = new CoreNeibor("折线图");fjc.pack();RefineryUtilities.centerFrameOnScreen(fjc);fjc.setVisible(true);}// 生成显示图表的面板public static JPanel createDemoLine() {JFreeChart jfreechart = createChart(createDataset());return new ChartPanel(jfreechart);}// 生成图表主对象JFreeChartpublic static JFreeChart createChart(DefaultCategoryDataset linedataset) {//创建主题样式         StandardChartTheme standardChartTheme=new StandardChartTheme("CN");        //设置标题字体         standardChartTheme.setExtraLargeFont(new Font("隶书",Font.BOLD,20));        //设置图例的字体        standardChartTheme.setRegularFont(new Font("宋书",Font.PLAIN,15));        //设置轴向的字体       standardChartTheme.setLargeFont(new Font("宋书",Font.PLAIN,15));        //应用主题样式      ChartFactory.setChartTheme(standardChartTheme); //定义图表对象JFreeChart chart = ChartFactory.createLineChart("折线图", // chart title"Eps", // domain axis label"", // range axis labellinedataset, // dataPlotOrientation.VERTICAL, // orientationtrue, // include legendtrue, // tooltipsfalse // urls);chart.setBackgroundPaint(new GradientPaint(0,0,Color.white,500,0,Color.LIGHT_GRAY)); CategoryPlot plot = chart.getCategoryPlot();// customise the range axis...NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());rangeAxis.setAutoRangeIncludesZero(true);rangeAxis.setUpperMargin(0.20);rangeAxis.setLabelAngle(Math.PI / 2.0);plot.setForegroundAlpha(1.0f);plot.getRenderer().setSeriesPaint(0, Color.red) ;plot.getRenderer().setSeriesPaint(1, Color.blue) ;//获取折线对象 LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();         BasicStroke realLine = new BasicStroke(3.6f);       //设置实线 float dashes[] = { 8.0f };                      //定义虚线数组 BasicStroke brokenLine = new BasicStroke(3.6f,      //线条粗细 BasicStroke.CAP_SQUARE,             //端点风格 BasicStroke.JOIN_MITER,                 //折点风格 8.f,                                //折点处理办法 dashes,                         //虚线数组 0.0f);                          //虚线偏移量 renderer.setSeriesStroke(1, brokenLine);     //利用虚线绘制 renderer.setSeriesStroke(0, realLine);    //利用实线绘制 try {ChartUtilities.saveChartAsPNG(new File("E:/chart/CoreNeibor.jpg"), chart, 500, 500);} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}return chart;}//生成数据public static DefaultCategoryDataset createDataset() {DefaultCategoryDataset linedataset = new DefaultCategoryDataset();// 各曲线名称String series1 = "核心点数";String series2 = "簇数";//    横轴名称(列名称)String type1 = "0.1";String type2 = "0.2";String type3 = "0.25";String type4 = "0.3";String type5 = "0.4";linedataset.addValue(900, series1, type1);linedataset.addValue(1500, series1, type2);linedataset.addValue(2010, series1, type3);linedataset.addValue(2501, series1, type4);linedataset.addValue(3500, series1, type5);linedataset.addValue(300, series2, type1);linedataset.addValue(600, series2, type2);linedataset.addValue(800, series2, type3);linedataset.addValue(604, series2, type4);linedataset.addValue(590, series2, type5);return linedataset;}}