The simplechart project uses Java2D with SWT to produce a simple Eclipse plug-in for plotting data and placing other objects on a chart. Customizable. Supports interactive zooming. Developers can create new objects by implementing an simple interface.
MobileMath is a software written by using J2ME technolology. It turns mobile into calculator supporting many operations such as : evaluate expression, plotting, differentiate & integrate expression... It can run on any mobiles supporting Java.
JOpenChart is an open source Java library and toolkit for creating different kinds of charts and embedding them into web applications or Swing applications. It further supports interpolating data and plotting mathematical functions etc. pp.