The Java Swing set is a collection of graphical user interface (GUI) components used to build modern application user interfaces. The Swing component set features a pluggable look and feel – meaning that the look and feel of the application interface can be altered through a simple configuration setting to emulate the look and feel of different operating system platforms (e.g. Microsoft Windows, Sun Solaris, Apple Macintosh). The Swing set consists of a collection of low-level user interface components (buttons, scrollbars, labels, etc.), plus a rich set of higher-level components (such as tree views, list boxes, and tabbed panes).