While tracing Swing’s single-threaded event model from Java 1.0 to its origins in the JavaBeans component model and AWT, he reveals an initialization bug in a commonly used start-up pattern.

Swing is an extension library to the AWT, includes new and improved components that enhance the look and functionality of GUIs. Swing can be used to build Standalone swing gui Apps as well as Servlets ...

When this window closes, I want it to call the function 'closeListener (java.awt.event.WindowEvent e)' and do some extra stuff before I dispose the frame and exit.