Eclipse is Back On Raspberry Pi
Since the Raspberry Pi foundation released a new Raspberry Pi 4 with 8GB
of RAM and since they started started working on 64bit
Raspbian Raspberry Pi OS,
all the requirements needed for Eclipse to work on Raspberry Pi again are met.
TL;DR - you can get a working version of Eclipse For Java Developers (2020-03) from here: eclipse-java-2020-03-v1-R-linux-gtk-aarch64.tar.gz
It only works on 64bit Raspberry Pi OS - follow the above forum link on how to get it and install it.