You are Welcome! The Tutorial shows you Step-by-Step How to Install and Getting-Started with the Latest Eclipse 2023-03 R IDE Java JEE 64-bit for Linux Lubuntu 12.04 Precise Lxde Amd64 Desktop.
There is the Possibility also to Install the Eclipse Platform via apt-get But the Ubuntu 12 Precise apt Repositories from Wich Lubuntu 12 Depends are still Back to Eclipse 3.7 Indigo.
So at the Moment if you want Install the Latest Eclipse 2023-03 R Build on Linux Lubuntu 12 you will Need to Download and Install Eclipse 2023-03 R JEE Release for Linux.
The contents give Focus only to the Essential Instructions and Commands so to make the Tut easier to understand ;)
Download Latest Eclipse 2023-03 R JEE for Linux:Eclipse 2023-03 R IDE JEE 64-bit Linux