JFreechart SeriesException
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I am trying to plot a bar chart using timeseries by introducing the beginning and the end date , but i got a problem with the end date it indicate : Exception in thread "main" org.jfree.data.general.SeriesException : You are attempting to add an observation for the time period 4-mai-2011 but the series already contains an observation for that time period. Duplicates are not permitted. Try using the addOrUpdate() method. final TimeSeries series2 = new TimeSeries("ip max", Day.class); String datebegin = "04/29/2011 02:00:01"; String dateend =