Introduction - If you have any usage issues, please Google them yourself
JFreeChart is an open source project, it is very powerful, can achieve pie (two and three dimensions), histogram (horizontal, vertical), line graph, diagram, sequence diagram and other common business charts, graphs can be exported as PNG and JPEG format, but also can be associated with the PDF and EXCEL, to support graphics zoom, support for common 3D graphics display. In this paper, the application of JFreeChart, class architecture and design patterns are analyzed in detail.