Introduction - If you have any usage issues, please Google them yourself
JFreeChart JAVA platform is an open chart drawing library. It is completely written using JAVA, for applications, applets, servlets, and JSP designed for such use. JFreeChart can generate pie charts (pie charts), histograms (bar charts), scatter (scatter plots), timing diagram (time series), Gantt charts (Gantt charts) and so a variety of charts, and can generate PNG and JPEG format output, also associated with PDF and EXCEL.