// Create volume chart renderer
    XYBarRenderer timeRenderer = new XYBarRenderer();
    timeRenderer.setShadowVisible(false);
    timeRenderer.setBaseToolTipGenerator(new StandardXYToolTipGenerator("Volume--> Time={1} Size={2}", new SimpleDateFormat("kk:mm"), new DecimalFormat("0")));

大家好，
编译上面的代码时，我收到了以下错误消息：

com/fx/jfree/chart/candlestick/JfreeCandlestickChart.java:[101,29] cannot find symbol
  symbol:   method setBaseToolTipGenerator(org.jfree.chart.labels.StandardXYToolTipGenerator)
  location: variable timeRenderer of type org.jfree.chart.renderer.xy.XYBarRenderer
1 error

提前感谢你的帮助，
空间。