The oldest installation media that I currently own is the Pop!_OS 17.10 flash drive I got at All Things Open. All of the installation media from my earliest forays into Linux are long gone. There are times where I wish I had kept my Red Hat Linux 5.x retail boxes and the discs from the "send me all the Linux and BSD distributions" collections from Cheap Bytes, but I have no idea where I would store dozens of discs that I would never use.
I use Red Hat's JBoss Developer Studio (which is based on Eclipse) for my own programming. I prefer BlueJ (https://bluej.org/) when I'm teaching Java to people new to programming.
The oldest installation media that I currently own is the Pop!_OS 17.10 flash drive I got at All Things Open. All of the installation media from my earliest forays into Linux are long gone. There are times where I wish I had kept my Red Hat Linux 5.x retail boxes and the discs from the "send me all the Linux and BSD distributions" collections from Cheap Bytes, but I have no idea where I would store dozens of discs that I would never use.