jfreechart y轴上显示整数数据

NumberAxis numberAxis = (NumberAxis) plot.getRangeAxis();
numberAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());//设置y轴显示整数数据

//在饼状图上显示百分比
pieplot.setLabelGenerator(new StandardPieSectionLabelGenerator(("{0}: ({2})"),
    NumberFormat.getNumberInstance(),new DecimalFormat("0.00%")));