jfreechart使用总结（转）

这里分三部分来介绍 jFreeChart 。第一部分介绍jFreeChart产生
图形的流程及相关的重要的类；第二部分介绍四种常用的报表图（饼图、柱状图、折线图、时间序列图）；第三部分
介绍在图形中增加Item Lable 。
jFreeChart 的版本是jfreechart-1.0.0-pre2(1)



一、jFreeChart产生图形的流程
   创建一个数据源（dataset）来包含将要在图形中显示的数据,创建一个 JFreeChart 对象来代表要显示的图形
   把图形输出
   重要的类和接口：
   org.jfree.data.general.Dataset  所有数据源类都要实现的接口
   org.jfree.chart.ChartFactory    由它来产生 JFreeChart 对象
   org.jfree.chart.JFreeChart    所有对图形的调整都是通过它噢！！
   org.jfree.chart.plot.Plot    通过JFreeChart 对象获得它，然后再通过它对图形外部部分（例：坐标轴）调整
                                注意：它有很多子类，一般都下嗍造型到它的子类！
   org.jfree.chart.renderer.AbstractRenderer     通过JFreeChart 对象获得它，然后再通过它对图形内部部分
                                                （例：折线的类型）调整。同样，针对不同类型的报表图，它有
                                                着不同的子类实现！在下面我们简称它为 Renderer
   下面我们结合不同类型的图形来具体分析这个流程。
 
二、饼图
   饼图的dataset 一般是用PieDataset 接口，具体实现类是 DefaultPieDataset
   1、创建一个数据源（dataset）：
    private static PieDataset createDataset()
    {
        DefaultPieDataset defaultpiedataset = new DefaultPieDataset(); //注意是DefaultPieDataset！！
        defaultpiedataset.setValue("One", new Double(43.200000000000003D));
        defaultpiedataset.setValue("Two", new Double(10D));
        defaultpiedataset.setValue("Three", new Double(27.5D));
        defaultpiedataset.setValue("Four", new Double(17.5D));
        return defaultpiedataset;
    }
   2、由ChartFactory  产生 JFreeChart 对象
    private static JFreeChart createChart(PieDataset piedataset)
    {
        JFreeChart jfreechart = ChartFactory.createPieChart("Pie Chart Demo 1",  //图形标题名称
                                                              piedataset,   // dataset
                                                              true,      // legend?
                                                              true,     // tooltips?
                                                              false);  //URLs?
        PiePlot pieplot = (PiePlot)jfreechart.getPlot();  //通过JFreeChart 对象获得 plot：PiePlot！！
        pieplot.setNoDataMessage("No data available");    // 没有数据的时候显示的内容
        return jfreechart;
    }
    一些重要的方法：
    pieplot.setExplodePercent(0,0.3D) //把Lable 为"One" 的那一块”挖“出来30%  
   3、输出略
 
三、柱状图
   柱状图的dataset 一般是用CatagoryDataset接口(具体实现类是DefaultCategoryDataset),也会用 IntervalXYDataset
   接口
   1、创建一个数据源（dataset）：
    private static CategoryDataset createDataset()
    {
        String series1 = "First";
        String series2 = "Second";
        String series3 = "Third";
        String category1 = "Category 1";
        String category2 = "Category 2";
        String category3 = "Category 3";
        String category4 = "Category 4";
        String category5 = "Category 5";
        DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset();
        defaultcategorydataset.addValue(1.0D, series1, category1);
        defaultcategorydataset.addValue(4D, series1, category2);
        defaultcategorydataset.addValue(3D, series1, category3);
        defaultcategorydataset.addValue(5D, series1, category4);
        defaultcategorydataset.addValue(5D, series1, category5);
      
        defaultcategorydataset.addValue(5D, series2, category1);
        defaultcategorydataset.addValue(7D, series2, category2);
        defaultcategorydataset.addValue(6D, series2, category3);
        defaultcategorydataset.addValue(8D, series2, category4);
        defaultcategorydataset.addValue(4D, series2, category5);
      
        defaultcategorydataset.addValue(4D, series3, category1);
        defaultcategorydataset.addValue(3D, series3, category2);
        defaultcategorydataset.addValue(2D, series3, category3);
        defaultcategorydataset.addValue(3D, series3, category4);
        defaultcategorydataset.addValue(6D, series3, category5);
        return defaultcategorydataset;
    }
   2、由ChartFactory  产生 JFreeChart 对象  
    private static JFreeChart createChart(CategoryDataset categorydataset)
    {
        JFreeChart jfreechart = ChartFactory.createBarChart("Bar Chart Demo", //图形标题名称
                                                            "Category",//domain 轴 Lable
                                                                         这里先简单理解为横坐标Lable好了
                                                            "Value", //range 轴 Lable
                                                                       这里也先简单理解为纵坐标Lable好了
                                                            categorydataset, //  dataset
                                                            PlotOrientation.VERTICAL, //垂直显示
                                                            true, // legend?
                                                            true,  // tooltips?
                                                            false); //URLs?
        jfreechart.setBackgroundPaint(Color.white);   //设定背景色为白色
        CategoryPlot categoryplot = jfreechart.getCategoryPlot(); //获得 plot：CategoryPlot！！
        categoryplot.setBackgroundPaint(Color.lightGray); //设定图表数据显示部分背景色
        categoryplot.setDomainGridlinePaint(Color.white); //横坐标网格线白色
        categoryplot.setDomainGridlinesVisible(true); //可见
        categoryplot.setRangeGridlinePaint(Color.white); //纵坐标网格线白色
        //下面两行使纵坐标的最小单位格为整数
        NumberAxis numberaxis = (NumberAxis)categoryplot.getRangeAxis();
        numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
        BarRenderer barrenderer = (BarRenderer)categoryplot.getRenderer(); //获得renderer 注意这里是下嗍造型
                                                                             到BarRenderer！！
        barrenderer.setDrawBarOutline(false); // Bar的外轮廓线不画
        GradientPaint gradientpaint = new GradientPaint(0.0F, 0.0F, Color.blue,
        0.0F, 0.0F, new Color(0, 0, 64));   //设定特定颜色
        GradientPaint gradientpaint1 = new GradientPaint(0.0F, 0.0F, Color.green,
        0.0F, 0.0F, new Color(0, 64, 0));
        GradientPaint gradientpaint2 = new GradientPaint(0.0F, 0.0F, Color.red,
        0.0F, 0.0F, new Color(64, 0, 0));
        barrenderer.setSeriesPaint(0, gradientpaint); //给series1 Bar设定上面定义的颜色
        barrenderer.setSeriesPaint(1, gradientpaint1); //给series2 Bar 设定上面定义的颜色
        barrenderer.setSeriesPaint(2, gradientpaint2); //给series3 Bar 设定上面定义的颜色
        CategoryAxis categoryaxis = categoryplot.getDomainAxis();  //横轴上的 Lable 45度倾斜
        categoryaxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);      
        return jfreechart;
    }
    一些重要的方法：（增加一块标记）
        IntervalMarker intervalmarker = new IntervalMarker(4.5D, 7.5D);
        intervalmarker.setLabel("Target Range");
        intervalmarker.setLabelFont(new Font("SansSerif", 2, 11));
        intervalmarker.setLabelAnchor(RectangleAnchor.LEFT);
        intervalmarker.setLabelTextAnchor(TextAnchor.CENTER_LEFT);
        intervalmarker.setPaint(new Color(222, 222, 255, 128));
        categoryplot.addRangeMarker(intervalmarker, Layer.BACKGROUND);  
      
四、折线图
   折线图的dataset 两种CatagoryDataset接口(具体实现类是DefaultCategoryDataset),XYDataset 接口
   1、CatagoryDataset接口：       
   A、创建一个数据源（dataset）：
    private static CategoryDataset createDataset()
    {
        String series1 = "First";
        String series2 = "Second";
        String series3 = "Third";
        String type1 = "Type 1";
        String type2 = "Type 2";
        String type3 = "Type 3";
        String type4 = "Type 4";
        String type5 = "Type 5";
        String type6 = "Type 6";
        String type7 = "Type 7";
        String type8 = "Type 8";
        DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset();
        defaultcategorydataset.addValue(1.0D, series1, type1);
        defaultcategorydataset.addValue(4D, series1, type2);
        defaultcategorydataset.addValue(3D, series1, type3);
        defaultcategorydataset.addValue(5D, series1, type4);
        defaultcategorydataset.addValue(5D, series1, type5);
        defaultcategorydataset.addValue(7D, series1, type6);
        defaultcategorydataset.addValue(7D, series1, type7);
        defaultcategorydataset.addValue(8D, series1, type8);
      
        defaultcategorydataset.addValue(5D, series2, type1);
        defaultcategorydataset.addValue(7D, series2, type2);
        defaultcategorydataset.addValue(6D, series2, type3);
        defaultcategorydataset.addValue(8D, series2, type4);
        defaultcategorydataset.addValue(4D, series2, type5);
        defaultcategorydataset.addValue(4D, series2, type6);
        defaultcategorydataset.addValue(2D, series2, type7);
        defaultcategorydataset.addValue(1.0D, series2, type8);
      
        defaultcategorydataset.addValue(4D, series3, type1);
        defaultcategorydataset.addValue(3D, series3, type2);
        defaultcategorydataset.addValue(2D, series3, type3);
        defaultcategorydataset.addValue(3D, series3, type4);
        defaultcategorydataset.addValue(6D, series3, type5);
        defaultcategorydataset.addValue(3D, series3, type6);
        defaultcategorydataset.addValue(4D, series3, type7);
        defaultcategorydataset.addValue(3D, series3, type8);
        return defaultcategorydataset;
    }
   B、由ChartFactory  产生 JFreeChart 对象     (与上面重复的部分就不再注释）
    private static JFreeChart createChart(CategoryDataset categorydataset)
    {
        JFreeChart jfreechart = ChartFactory.createLineChart("Line Chart Demo 1",
                                                             "Type",
                                                             "Value",
                                                             categorydataset,
                                                             PlotOrientation.VERTICAL,
                                                             true,
                                                             true,
                                                             false);
        jfreechart.setBackgroundPaint(Color.white);
        CategoryPlot categoryplot = (CategoryPlot)jfreechart.getPlot();
        categoryplot.setBackgroundPaint(Color.lightGray);
        categoryplot.setRangeGridlinePaint(Color.white);
        NumberAxis numberaxis = (NumberAxis)categoryplot.getRangeAxis();
        numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
        numberaxis.setAutoRangeIncludesZero(true);
        //获得renderer 注意这里是下嗍造型到lineandshaperenderer！！
        LineAndShapeRenderer lineandshaperenderer = (LineAndShapeRenderer)categoryplot.getRenderer();
        lineandshaperenderer.setShapesVisible(true); //series 点（即数据点）可见
        lineandshaperenderer.setSeriesStroke(0, new BasicStroke(2.0F, 1, 1, 1.0F, new float[] {
            10F, 6F
        }, 0.0F)); //定义series为"First"的（即series1）点之间的连线 ，这里是虚线，默认是直线
        lineandshaperenderer.setSeriesStroke(1, new BasicStroke(2.0F, 1, 1, 1.0F, new float[] {
            6F, 6F
        }, 0.0F)); //定义series为"Second"的（即series2）点之间的连线
        lineandshaperenderer.setSeriesStroke(2, new BasicStroke(2.0F, 1, 1, 1.0F, new float[] {
            2.0F, 6F
        }, 0.0F)); //定义series为"Third"的（即series3）点之间的连线
        return jfreechart;
    }
        一些重要的方法：
        lineandshaperenderer.setLineVisible(true)  //series 点（即数据点）间有连线可见
   2、XYDataset 接口：
   A、创建一个数据源（dataset）：
    private static XYDataset createDataset()
    {
        XYSeries xyseries = new XYSeries("First"); //先产生XYSeries 对象
        xyseries.add(1.0D, 1.0D);
        xyseries.add(2D, 4D);
        xyseries.add(3D, 3D);
        xyseries.add(4D, 5D);
        xyseries.add(5D, 5D);
        xyseries.add(6D, 7D);
        xyseries.add(7D, 7D);
        xyseries.add(8D, 8D);
      
        XYSeries xyseries1 = new XYSeries("Second");
        xyseries1.add(1.0D, 5D);
        xyseries1.add(2D, 7D);
        xyseries1.add(3D, 6D);
        xyseries1.add(4D, 8D);
        xyseries1.add(5D, 4D);
        xyseries1.add(6D, 4D);
        xyseries1.add(7D, 2D);
        xyseries1.add(8D, 1.0D);
      
        XYSeries xyseries2 = new XYSeries("Third");
        xyseries2.add(3D, 4D);
        xyseries2.add(4D, 3D);
        xyseries2.add(5D, 2D);
        xyseries2.add(6D, 3D);
        xyseries2.add(7D, 6D);
        xyseries2.add(8D, 3D);
        xyseries2.add(9D, 4D);
        xyseries2.add(10D, 3D);
      
        XYSeriesCollection xyseriescollection = new XYSeriesCollection(); //再用XYSeriesCollection添加入XYSeries 对象
        xyseriescollection.addSeries(xyseries);
        xyseriescollection.addSeries(xyseries1);
        xyseriescollection.addSeries(xyseries2);
        return xyseriescollection;
    }
   B、由ChartFactory  产生 JFreeChart 对象
    private static JFreeChart createChart(XYDataset xydataset)
    {
        JFreeChart jfreechart = ChartFactory.createXYLineChart("Line Chart Demo 2",
                                                               "X",
                                                               "Y",
                                                               xydataset,
                                                               PlotOrientation.VERTICAL,
                                                               true,
                                                               true,
                                                               false);
        jfreechart.setBackgroundPaint(Color.white);
        XYPlot xyplot = (XYPlot)jfreechart.getPlot(); //获得 plot：XYPlot！！
        xyplot.setBackgroundPaint(Color.lightGray); //设定图表数据显示部分背景色
        xyplot.setAxisOffset(new RectangleInsets(5D, 5D, 5D, 5D)); //设定坐标轴与图表数据显示部分距离
        xyplot.setDomainGridlinePaint(Color.white); //网格线颜色
        xyplot.setRangeGridlinePaint(Color.white);
        //获得 renderer 注意这里是XYLineAndShapeRenderer ！！
        XYLineAndShapeRenderer xylineandshaperenderer = (XYLineAndShapeRenderer)xyplot.getRenderer();
        xylineandshaperenderer.setShapesVisible(true); //数据点可见
        xylineandshaperenderer.setShapesFilled(true); //数据点被填充即不是空心点
        NumberAxis numberaxis = (NumberAxis)xyplot.getRangeAxis();
        numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
        return jfreechart;
    }                    
   一些重要的方法：
        XYLineAndShapeRenderer xylineandshaperenderer = new XYLineAndShapeRenderer();
        xylineandshaperenderer.setSeriesLinesVisible(0, false); //第一个XYSeries数据点间连线不可见
        xylineandshaperenderer.setSeriesShapesVisible(1, false); //第二个XYSeries数据点不可见
        xyplot.setRenderer(xylineandshaperenderer); 
      
五、时间序列图
    时间序列图和折线图很相似，不同的是它在 domain轴的数据是时间而不是数字。 时间序列图的dataset 是
    XYDataset 接口，具体实现类是TimeSeriesCollection ，和上面类似，有TimeSeries 对象，它被添加入
    TimeSeriesCollection 。                                                                             
  1、创建一个数据源（dataset）：
    private static XYDataset createDataset()
    {
        TimeSeries timeseries = new TimeSeries("L&G European Index Trust",Month.class);
        timeseries.add(new Month(2, 2001), 181.8D);//这里用的是Month.class，同样还有Day.class Year.class 等等
        timeseries.add(new Month(3, 2001), 167.3D);
        timeseries.add(new Month(4, 2001), 153.8D);
        timeseries.add(new Month(5, 2001), 167.6D);
        timeseries.add(new Month(6, 2001), 158.8D);
        timeseries.add(new Month(7, 2001), 148.3D);
        timeseries.add(new Month(8, 2001), 153.9D);
        timeseries.add(new Month(9, 2001), 142.7D);
        timeseries.add(new Month(10, 2001), 123.2D);
        timeseries.add(new Month(11, 2001), 131.8D);
        timeseries.add(new Month(12, 2001), 139.6D);
        timeseries.add(new Month(1, 2002), 142.9D);
        timeseries.add(new Month(2, 2002), 138.7D);
        timeseries.add(new Month(3, 2002), 137.3D);
        timeseries.add(new Month(4, 2002), 143.9D);
        timeseries.add(new Month(5, 2002), 139.8D);
        timeseries.add(new Month(6, 2002), 137D);
        timeseries.add(new Month(7, 2002), 132.8D);
      
        TimeSeries timeseries1 = new TimeSeries("L&G UK Index Trust",Month.class);
        timeseries1.add(new Month(2, 2001), 129.6D);
        timeseries1.add(new Month(3, 2001), 123.2D);
        timeseries1.add(new Month(4, 2001), 117.2D);
        timeseries1.add(new Month(5, 2001), 124.1D);
        timeseries1.add(new Month(6, 2001), 122.6D);
        timeseries1.add(new Month(7, 2001), 119.2D);
        timeseries1.add(new Month(8, 2001), 116.5D);
        timeseries1.add(new Month(9, 2001), 112.7D);
        timeseries1.add(new Month(10, 2001), 101.5D);
        timeseries1.add(new Month(11, 2001), 106.1D);
        timeseries1.add(new Month(12, 2001), 110.3D);
        timeseries1.add(new Month(1, 2002), 111.7D);
        timeseries1.add(new Month(2, 2002), 111D);
        timeseries1.add(new Month(3, 2002), 109.6D);
        timeseries1.add(new Month(4, 2002), 113.2D);
        timeseries1.add(new Month(5, 2002), 111.6D);
        timeseries1.add(new Month(6, 2002), 108.8D);
        timeseries1.add(new Month(7, 2002), 101.6D);
        TimeSeriesCollection timeseriescollection = new TimeSeriesCollection();
        timeseriescollection.addSeries(timeseries);
        timeseriescollection.addSeries(timeseries1);
        timeseriescollection.setDomainIsPointsInTime(true); //domain轴上的刻度点代表的是时间点而不是时间段
        return timeseriescollection;
    }
   2、由ChartFactory  产生 JFreeChart 对象
    private static JFreeChart createChart(XYDataset xydataset)
    {
        JFreeChart jfreechart = ChartFactory.createTimeSeriesChart("Legal & General Unit Trust Prices",
                                                                   "Date",
                                                                   "Price Per Unit",
                                                                   xydataset,
                                                                   true,
                                                                   true,
                                                                   false);
        jfreechart.setBackgroundPaint(Color.white);
        XYPlot xyplot = (XYPlot)jfreechart.getPlot(); //获得 plot : XYPlot!!
        xyplot.setBackgroundPaint(Color.lightGray);
        xyplot.setDomainGridlinePaint(Color.white);
        xyplot.setRangeGridlinePaint(Color.white);
        xyplot.setAxisOffset(new RectangleInsets(5D, 5D, 5D, 5D));
        xyplot.setDomainCrosshairVisible(true);
        xyplot.setRangeCrosshairVisible(true);
        org.jfree.chart.renderer.xy.XYItemRenderer xyitemrenderer = xyplot.getRenderer();
        if(xyitemrenderer instanceof XYLineAndShapeRenderer)
        {
            XYLineAndShapeRenderer xylineandshaperenderer = (XYLineAndShapeRenderer)xyitemrenderer;
            xylineandshaperenderer.setDefaultShapesVisible(true); //数据点可见
            xylineandshaperenderer.setDefaultShapesFilled(true);  //数据点是实心点
        }
        DateAxis dateaxis = (DateAxis)xyplot.getDomainAxis(); //对domain 轴上日期显示格式定义
        dateaxis.setDateFormatOverride(new SimpleDateFormat("MMM-yyyy"));
        return jfreechart;
    }
       一些重要的方法：
     A、增加标记线：
        xyplot.addRangeMarker(new ValueMarker(550D)); //数值轴
        Quarter quarter = new Quarter(2, 2002);
        xyplot.addDomainMarker(new ValueMarker(quarter.getMiddleMillisecond()));  //时间轴
     B、数据点的调整
        XYLineAndShapeRenderer xylineandshaperenderer = (XYLineAndShapeRenderer)xyplot.getRenderer();
        xylineandshaperenderer.setDefaultShapesVisible(true);  //数据点可见
        xylineandshaperenderer.setSeriesFillPaint(0, Color.red);  //数据点填充为红色
        xylineandshaperenderer.setSeriesFillPaint(1, Color.white);  //数据点填充为白色
        xylineandshaperenderer.setUseFillPaint(true);    //应用
     C、平均值曲线
       这个曲线有什么用呢？很简单的例子，这里有一个以半年每天为单位的数据绘制的曲线，我们想看看以月为单位数据
       的变化，这时就可以用到它了。
        TimeSeries timeseries = createEURTimeSeries();  //就是以半年每天为单位的数据
        TimeSeries timeseries1 = MovingAverage.createMovingAverage(timeseries,
                                                                   "30 day moving average",
                                                                   30, //30天为一个周期
                                                                   30); //最开始的30天跳过
        TimeSeriesCollection timeseriescollection = new TimeSeriesCollection();
        timeseriescollection.addSeries(timeseries);
        timeseriescollection.addSeries(timeseries1);
        return timeseriescollection;
   
六、总结一下
                           dataset                          plot                    renderer                     
  饼图           PieDataset（DefaultPieDataset）           PiePlot                    ------
  柱状图    CatagoryDataset（DefaultCategoryDataset）    CategoryPlot                BarRenderer
  折线图    CatagoryDataset（DefaultCategoryDataset）    CategoryPlot              LineAndShapeRenderer
                  XYDataset（XYSeriesCollection）           XYPlot                XYLineAndShapeRenderer
  时间序列图     XYDataset （TimeSeriesCollection）         XYPlot                XYLineAndShapeRenderer
  这里只是一些常用的方法，具体还是看API ,主要的类总结如下：
JFreeChart:生成图表的中间存放类。

CategoryDataSet:图表的数据，主要包含行数据（String[] 类型），列数据(String[] 类型）和主数据                    (double[][]类型）。一般来说简单的图表主数据都是double[1][]类型的。
ChartFactory: 工厂类，提供多种方法生成多达30多种图表，用得比较多的是BarChart(柱状图),LineChart             （折线图），PieChart（饼状图）。工厂方法看起来比较统一：creatXXXChart(图表标题，              行标题，列标题，主数据（CategoryDataSet）)
ChartUtities: 公用类，提供各种持久保存图表数据的方法，比如saveChartAsJPEG(File，                             JFreeChart,width,height)
其他还有一些渲染类，主要是用来美化图表界面，调整和优化显示风格等。
总的来说还不错，比jasperReport要简单，上手很快，图表效果也还不错，用来做普通数据图表足够了


七、Item Lable
   这里以柱状图为例说明，具体来说就是在每个柱状上显示它的数据，具体有下面内容：
   A、使 Item Lable 可见
   B、调整 Item Lable 的颜色、字体等
   C、调整 Item Lable 的位置
   D、定制 Item Lable 的内容
   1、分配一个 Lable Generator 给 renderer
      BarRenderer barrenderer = (BarRenderer)categoryplot.getRenderer();
      GategoryLableGenerator generator =new StandardGategoryLableGenerator(
           "{2}", new DecimalFormat("0.00")    //调整显示的数字和字符格式
      );
      barrenderer.setLableGenerator(generator);
   2、使 Item Lable 可见
      barrenderer.setItemLableVisible(true);
   3、调整 Item Lable 的颜色、字体等
      barrenderer.setItemLablePaint(Color.red);
      barrenderer.setItemLableFont(new Font("SansSerif",Font.PLAIN,10));
   4、调整 Item Lable 的位置
      这里涉及到一个新的对象 ItemLablePosition , ItemLablePosition的构造函数有两个或四个参数
      public ItemLabelPosition(ItemLabelAnchor itemLabelAnchor,
                         org.jfree.ui.TextAnchor textAnchor,
                         org.jfree.ui.TextAnchor rotationAnchor,
                         double angle)
      itemLabelAnchor - Item Lable 的位置 （最重要的！！）
      textAnchor - Item Lable里包含的正文相对于Item Lable 的位置
      rotationAnchor - Item Lable里包含的正文旋转的位置
      angle - 旋转的角度
      ItemLabelPosition itemlabelposition = new ItemLabelPosition(ItemLabelAnchor.INSIDE12,
                                                      TextAnchor.CENTER_RIGHT,
                                                      TextAnchor.CENTER_RIGHT,
                                                      -1.57D);
      barrenderer.setPositiveItemLabelPosition(itemlabelposition);



本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/gao_guang/archive/2007/03/27/1542634.aspx