The graphical user interface is created dynamically based on the XML definitions. Each GUI window is associated with exactly one top-level XML file. Each XML file can dynamically include other XML files to support complex GUI definitions. Each XML file is associated with a java object that acts as both a Controller and a Model for the GUI. There is a strong layer separation between the GUI and the Controller: GUI definitions in the XML files can access all Java methods of the Controller, but Java methods cannot access any GUI elements directly. Events are used to trigger changes in the GUI.
Version 1.1 is the first release as open source. It is available at http://sourceforge.net/projects/gui4j and from the gui4j homepage. The project was initially developed at Beck et al projects.”
Link: gui4j.net
