GWT Highcharts is a freely available open source library that provides an elegant and feature complete approach for including Highcharts and Highstock visualizations within a GWT application using pure Java code.
Note: the source code for this project is now being maintained on GitHub here: https://github.com/squinn/gwt-highcharts
An extension of GWTCanvas widget to allow leveraging all of the features of the HTML 5 canvas element, like drawing text and shadows. Depends on browser support for the canvas element. See project home page link for usage details.