JFreeChart 中的new Month(month,year),出图时的奇怪问题

代码如下:

for(int k=0;k<bpList.size();k++)
   {      

    baseprice = 0;
    Baseprice  bp = bpList.get(k);
    if(bp.getBaseprice()!=null)
     baseprice = bp.getBaseprice();
    String basepriceS = df.format(Double.valueOf(baseprice));
    priceDateStr = sf.format(bp.getBeginDate());

    SimpleDateFormat dfYear = new java.text.SimpleDateFormat("yyyy");
    SimpleDateFormat dfMonth = new java.text.SimpleDateFormat("MM");
    SimpleDateFormat sdf = new java.text.SimpleDateFormat("yyyy-MM-dd");
    String ss = sdf.format(bp.getBeginDate());
    
    Date date = sdf.parse(ss);  
    calendar.setTime(date);
    year = Integer.valueOf(dfYear.format(bp.getBeginDate()));
//    month = Integer.valueOf(dfMonth.format(bp.getBeginDate()));
    int m = calendar.get(Calendar.MONTH)+1;
    new Year(year);
    new org.jfree.data.time.Year(year);
    new org.jfree.data.time.Month(date);
    RegularTimePeriod s = new Month(date);
//    timeseries.addOrUpdate(new Month(new org.jfree.data.time.Month(date).getMonth(), year), Double.valueOf(basepriceS));
 // timeseries.addOrUpdate(s, Double.valueOf(basepriceS));

//    timeseries.addOrUpdate(new Month(m,year),Double.valueOf(basepriceS));

用上面三个已 // 屏蔽 的方法显示的是"月和日"

timeseries.addOrUpdate(new Month(2,year),Double.valueOf(basepriceS));

用上面这个把月固定为一个数,就显示为正常的年和月.

请问这怎么回事呢,都是int类型的.试过很多种方法都没成功,希望高手帮忙解答一二,

分不多,请笑纳,谢谢.
   }

 

New Year's ResolutionsWell, new year has already came. What am I going to do next year? I am leaving my home for Xiamen with my family next year. We are going there by plane .And after we getting there, we are eating delicious food, climbing the mountains, going to the Gu Lang Yu Park, the Jin Bang Park.We are also going shopping , playing basketball with my aunts . And we are staying there for a month . After a month , we are coming back to our home.We are having a good time there. How about you? What are you going to do next year ?