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1、JFreechart完整柱状图importjava.io.IOException;publicclassAttendanceMain{publicstaticvoidmain(String[]args)throwsIOException{double[][]data=newdouble[][]{{100,96,98,95,99,100,92,93,91,94,96},{97,96,98,95,99,100,92,93,91,94,96},{97,96,98,95,99,100,92,93,91,94,96},{97,96,98,95,99,100,92,93,91,94,96}};Strin
2、g[]columnKeys={"测控1班","测控2班","信号1班","信号2班","信号3班","计通1班","计通2班","城轨1班","城轨2班","计应1班","计应2班"};String[]rowKeys={"2009级","2010级","2011级","2012级"};newAttendance(data,rowKeys,columnKeys);//at.setSubstring("第八周");}}importjava.awt.Color;importjava.awt.Font;importjava.awt.RenderingHints;importjava.io.FileO
3、utputStream;importjava.io.IOException;importorg.jfree.chart.ChartFactory;importorg.jfree.chart.ChartUtilities;importorg.jfree.chart.JFreeChart;importorg.jfree.chart.axis.AxisLocation;importorg.jfree.chart.axis.CategoryAxis;importorg.jfree.chart.axis.CategoryLabelPositions;importorg.jfree.chart.axis
4、.ValueAxis;importorg.jfree.chart.labels.StandardCategoryItemLabelGenerator;importorg.jfree.chart.plot.CategoryPlot;importorg.jfree.chart.plot.PlotOrientation;importorg.jfree.chart.renderer.category.BarRenderer;importorg.jfree.chart.title.TextTitle;importorg.jfree.data.category.CategoryDataset;impor
5、torg.jfree.data.general.DatasetUtilities;publicclassAttendance{/*privateStringsubtitle;publicvoidsetSubstring(Stringsub){subtitle=sub;}*/publicAttendance(double[][]data,String[]rowKeys,String[]columnKeys)throwsIOException{CategoryDatasetdataset=DatasetUtilities.createCategoryDataset(rowKeys,columnK
6、eys,data);JFreeChartchart=ChartFactory.createBarChart("计算机与通信工程系各班出勤率",//图表标题"班级",//目录轴的显示标签"出勤率(%)",//数值轴的显示标签dataset,//数据集PlotOrientation.VERTICAL,//图表方向：水平//PlotOrientation.HORIZONTAL,//图表方向：垂直true,false,false);//设置背景颜色chart.setBackgroundPaint(Color.cyan);CategoryPlotplot=chart.getCategoryPlot()
7、;BarRendererrender=(BarRenderer)plot.getRenderer();render.setBaseOutlinePaint(Color.red);//设置详细图表的显示细节部分的背景颜色plot.setBackgroundPaint(Color.lightGray);//设置垂直网格线颜色plot.setDomainGridlinePaint(Color.black);//设置
