Buoy is a library for creating user interfaces in Java programs. It is built on top of Swing, but provides a completely new set of classes to represent graphical components. It offers many advantages over using Swing directly, including:

* A much simpler, cleaner, and more consistent API
* A better mechanism for laying out interface components
* A far more powerful event handling mechanism, which is based on dynamic binding of arbitrary methods as event listeners
* Built in support for serializing user interfaces as XML, then reconstructing them again

Other important features of Buoy include:

* It forms a "transparent wrapper" around Swing. It hides the complexity of Swing when you don't want to deal with it, but doesn't get in your way when you actually need that complexity.
* It is very small and efficient. The entire compiled library is only 200 K.
* It is written entirely in Java, and works on any JVM that is compatible with J2SE 1.4 or later.
* All source code is in the public domain.