JFreeChart is a Java open source library for creating charts. Thanks to the two plug-ins discussed in this chapter, you can too tap the power of this popular library. This chapter is focused on how to use the plug-ins and not a tutorial on JFreeChart itself, even though a brief introduction is given.
JFreeChart must be downloaded separately as its LGPL license does not permit it to be distributed with Struts. Information on how to download it is available from its website:
The JFreeChart component is packaged into a JAR file named jfreechart-VERSION.jar. In addition to this JAR file, you need the jcommon-VERSION.jar file that contains dependencies needed by ...