The Swing components are the most significant part of the Java Foundation Classes ( JFC). Swing components cover basic needs, but some commonly useful items are missing. For instance, a Color Chooser component is included, but a Font Chooser is not.
JClass Elements is a broad collection of GUI components and utility classes designed to augment Swing’s basic offerings. With JClass Elements, you have an extended set of off-the-shelf user interface components at your disposal. Moreover, because of their open design, it’s easy to adapt them to your own custom needs.