JChartLib is a library for drawing beautiful charts. It supports linecharts and barcharts with colors, automatic axis numbering, and automatic styling depending on the number of values. Charts can be integrated into Java swing applications. Charts can be saved as jpg or png image files.
JChartlib can now produce a piechart. JChartlibPro can also produce a cakechart and a ringchart.
URL: JChartLib | Free Development software downloads at SourceForge.net