This the Flatpak version of Eclipse IDE.
To build locally run
flatpak-builder build-dir --force-clean org.eclipse.Java.json
Test the installation using
flatpak-builder --user --install --force-clean build-dir org.eclipse.Java.json
flatpak run org.eclipse.Java
To install a stable release version from the repository use the following:
flatpak remote-add flathub https://flathub.org/repo/flathub.flatpakrepo
flatpak install flathub org.eclipse.Java.json