jfreechart的应用

所需软件包：jcommon-1.0.15.jar,jfreechart-1.0.12.jar点击(此处)折叠或打开 package atest;import java.io.File;import java.io.IOException;import org.jfree.chart.ChartFactory;import org.jfree.chart.ChartFrame;import org.jfree.chart.ChartUtilities;import org.jfree.chart.JFreeChart;import org.jfree.chart.plot.PlotOrientation;import org.jfree.data.category.DefaultCategoryDataset;import org.jfree.data.general.DefaultPieDataset;public class jfreecharttest {    /**     * [メソッドの説明を書きましょう]     * @param args     */    public static void main(String[] args) {        try {            // 设置主题            //ChartFactory.setChartTheme(Theme.getTheme());            // 构造数据            DefaultCategoryDataset dataset = new DefaultCategoryDataset();            dataset.addValue(100, "JAVA", "1");            dataset.addValue(200, "js", "1");            dataset.addValue(200, "C++", "2");            dataset.addValue(300, "C", "3");            dataset.addValue(400, "HTML", "4");            dataset.addValue(400, "CSS", "5");            /*             * public static JFreeChart createBarChart3D( java.lang.String title, 设置图表的标题 java.lang.String categoryAxisLabel,             * 设置分类轴的标示 java.lang.String valueAxisLabel, 设置值轴的标示 CategoryDataset dataset, 设置数据 PlotOrientation orientation,             * 设置图表的方向 boolean legend, 设置是否显示图例 boolean tooltips,设置是否生成热点工具 boolean urls) 设置是否显示url             */            JFreeChart barChart = ChartFactory.createBarChart3D("Program Language Statics(Bar charts)", "Language", "Using Person", dataset, PlotOrientation.VERTICAL,                    true, false, false);            // 保存图表            ChartUtilities.saveChartAsPNG(new File("D:/jfreechartD.png"), barChart, 800, 500);            DefaultPieDataset dpd=new DefaultPieDataset(); //建立一个默认的饼图            dpd.setValue("Managerial Staff", 25); //输入数据            dpd.setValue("Market", 25);            dpd.setValue("Developer", 45);            dpd.setValue("Other", 10);            //可以查具体的API文档,第一个参数是标题，第二个参数是一个数据集，第三个参数表示是否显示Legend，第四个参数表示是否显示提示，第五个参数表示图中是否存在URL            JFreeChart pieChart=ChartFactory.createPieChart("Company staff data chart",dpd,true,true,false);// ChartFrame chartFrame = new ChartFrame("某公司人员组织数据图",pieChart);//chart要放在Java容器组件中，ChartFrame继承自java的Jframe类。该第一个参数的数据是放在窗口左上角的，不是正中间的标题。// chartFrame.pack(); //以合适的大小展现图形// chartFrame.setVisible(true);//图形是否可见            ChartUtilities.saveChartAsPNG(new File("D:/jfreechartPie.png"), pieChart, 800, 500);            System.out.println("Drawing finish!");        } catch (IOException e) {            e.printStackTrace();        }    }}