JGantt is powerful gantt chart component for the Java Swing UI. It is focused on easy-to-use programming, despite its complexity.
The component consists of advanced treetable, chart header and chart component. Each of these subcomponents is customizable, so your gantt chart can look quite differently.
Model for component is as simple as possible, you need to implement 3 methods, and your domain objects need to implement interface with methods for get / set date parameters. Model supports data lazy loading. Internationalization requires just to write another resource bundle.
The treetable supports in-place editing, data binding, and user can show / hide columns.
Chart header displays 2 rows of date/time column header from minutes to years, controlled by the zoom policy.
Chart component is painted in layers. Each layer paints only things it is programmed for. You can configure layers and also write your own layers to meet your needs. Layers use JGantt component model, so there is no data synchronization required. In layers is built-in mouse support.
Documentation (manual and javadoc) and simple demo application (examples) are included. Try it free.
If you are looking for the professional gantt chart solution for your application development, JGantt is the right choice.

Platform: Windows 2000, Windows XP, Mac OSX, Linux

System Requirements: Java 1.5+