Which JFreeChart is the easiest to use for representing simple line and bar charts [closed]

Answer 1

While I recommend the guide^† for professional developers, students and afficionados will want to examine the extant examples and source. org.jfree.chart.demo.TimeSeriesChartDemo1, included in the distribution, is particularly relevant to your use case, and the associated createTimeSeriesChart() methods of ChartFactory show how such a chart is constructed using a DateAxis.

^†_{Disclaimer: Not affiliated with Object Refinery Limited; just a satisfied customer and very minor contributor.}