请教高手jfreechart 做柱状图问题

Question

 jfreechart 做柱状图，Y轴显示 时间 传过去的是秒数
怎么样把秒数格式化成hh:mm:ss   请教各位高手

Answer 1

可以的，用到RelativeDateFormat        DateAxis rangeAxis = new DateAxis();
        RelativeDateFormat rdf = new RelativeDateFormat();
        rdf.setShowZeroDays(false);
        rdf.setHourSuffix(":");
        rdf.setMinuteSuffix(":");
        rdf.setSecondSuffix(":");
        rdf.setSecondFormatter(new DecimalFormat("00"));
        rangeAxis.setDateFormatOverride(rdf);
        plot.setRangeAxis(rangeAxis);