In my quest to look for an answer to the blog entry I posted recently, I found Retroweaver.
I'm very surprised that no one in Borland has mentioned Retroweaver, either in the JBuilder blogs or in the newsgroups.
Retroweaver is a tool that converts Java 1.5 class files into Java 1.4 class files.
Enough said. ;o)
In 2017, with the release of Delphi 10.2 Tokyo, Embarcadero introduced a specialized implementation of the Observer pattern into the System.Classes unit. While it has been in the wild for 9 years, it remains a "hidden" architecture for many, primarily because it serves as the invisible engine behind LiveBindings. Other than live bindings, you can also use the Observer pattern as a way to update component settings to the Windows registry, an .ini file, or persist it elsewhere.
System.Classes