Openchart2 can generate a wide variety of chart types.  Some examples are shown below

Pie Chart Applet

The above screenshot shows the results of Tutorial #1 running in an applet viewer window. 

Random Data Scatter Plot

The example above shows a simple Swing application with an Openchart2 panel displayed in the center of the window.  The code for this example comes from Tutorial #3.

Bar Chart (Histogram)

The above is a bar chart captured from the Draco econometrics package.  The chart was created using an Openchart2 Swing-compatible panel displayed in a JInternalFrame.