A Java GUI library that enhances the functionality and appearance of JTable.Data can also be displayed in a "Treetable" view.Some of the features include data sorting and filtering, dynamically add/remove columns, automatically adjust column widths and other various rendering and editing enhancements. The library is highly customizable and can be integrated seamlessly with your existing applications or applets. The TreeTable component is extremely powerfull and flexible: it provides a multi-level tree structure, headers, multiple footers and aggregate functions. Extended API Javadoc documentation is included.