An illustration is JEmacs (JEmacs.sourceforge.net), a (not very active) project of mine to implement Emacs in Java using Swing (and Kawa ... of compiling a set of Java classes into a shared library ...

To maintain backward compatibility with projects that use them, both Swing and the legacy AWT ... Oracle made it clear that JavaFX would replace Swing as the standard UI library for Java. JavaFX had a ...