Overview (MDIFramework API)

core classes
Package	Description
org.mdi.app	Main package of the framework.
org.mdi.bootstrap	Minimal Bootstrap interfaces for the framework.
org.mdi.bootstrap.launcher	These classes are used to handle the command-line properties.
org.mdi.gui	Generic GUI classes used by the framework.
org.mdi.plugins	Plugins management classes.
org.mdi.util	Utility classes.

Swing classes
Package	Description
org.mdi.app.swing	Specific Swing classes for the Main package of the framework.
org.mdi.bootstrap.swing	Specific Swing Bootstrap interfaces for the framework.
org.mdi.gui.swing	Specific Swing GUI classes used by the framework.
org.mdi.plugins.swing	Specific Swing Plugins management classes.
org.mdi.util.swing	Swing specific Utility classes.

JavaFX classes
Package	Description
org.mdi.app.jfx	Specific JavaFX classes for the Main package of the framework.
org.mdi.plugins.jfx	Specific JavaFX Plugins management classes.
org.mdi.util.jfx	JavaFX specific Utility classes.

MDIFramework is a library which provide a ready-to-use architecture to ease the creation of GUI applications in Java. Some of the functions this framework provides are:

Taking care of the overall architecture of the main window of the application, with a tabbed architecture, the presence of an html printable message area, and so on
Providing a generic API to manage lengthy actions, keeping the interface responsive, and taking care that actions are performed one at a time, without having to bother about it
Adding Metadatas to already opened files
Managing loading and unloading of external plugins at runtime. Also register Plugins menus in the Application from the Plugin itself
Dynamic menus
Storing / retrieving non GUI parameters between sessions
Managing FileTypes, and filter menus according to them
Adding a Splashscreen
Manage settings in a homogenous way for the Applications and its Plugins, and serialize the settings

Note that this framework can be both used in Swing and JavaFX. The project is under both the APACHE and LGPL licenses and is available here: https://sourceforge.net/projects/mdiframework. Note that this project is a copy of the http://java.net/projects/mdiframework/ on java.net (I own the two projects), because the old java.net hosting infrastructure will soon close close. The original project exists since 2006.