The Tutorial shows you How to Install and Getting-Started with the Latest Eclipse 2023-03 R IDE JEE on Ubuntu Linux 12.04 Precise Pangolin Unity Desktop.
There is the Possibility also to Install the Eclipse Platform via apt-get But the Ubuntu 12 Precise apt Repositories are still Back to Eclipse 3.7 Indigo.
So at the Moment if you want Install the Latest Eclipse 2023-03 R Build on Ubuntu Linux 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 JEE for Linux:Eclipse 2023-03 R IDE JEE Linux