"I first went in search of a Java charting package when I had to
write a financial application for one of my projects in 2003.
JFreeChart caught my eye, not only because it was available under
the GNU Lesser General Public License (LGPL), but also because it
provided support for financial charts right out of the box. With
last month's release, JFreeChart is the first open source,
Java-based charting library to reach the 1.0 milestone.
"The library supports the standard array of pie, bar, line,
area, and other charts. What makes it stand apart from similar Java
open source offerings is its support for more complex charts,
including Gantt, polar, and financial charts such as