Awesome
This project provides a simple and intuitive API for functional testing of Swing user interfaces, resulting in tests that are compact, easy to write, and read like a specification. Tests written using FEST-Swing are also robust. FEST simulates actual user gestures at the operating system level, ensuring that the application will behave correctly in front of the user. It also provides a reliable mechanism for GUI component lookup that ensures that changes in the GUI's layout or look-and-feel will not break your tests.
For more details please visit FEST's home page.