The Tutorial shows you How to Install and Getting-Started with the Latest Eclipse 2023-03 R IDE Java JEE 32-bit for Snow-Linux 4 Glacier Mate i386 Desktop.
There is the Possibility also to Install the Eclipse Platform via apt-get But the Ubuntu 12 Precise apt Repositories from Wich Snow-Linux 3 Crystal 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 Snow-Linux 3 Crystal 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 ;)

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Download Latest Eclipse 2023-03 R JEE:
Eclipse 2023-03 R JEE Linux -
Double-Clik on Archive and Extract Eclipse into /tmp
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Open Terminal Window
(Press “Enter” to Execute Commands) -
Relocating Eclipse.
sudo chown -R root:root /tmp/eclipse && mv /tmp/eclipse /opt/
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Starting Eclipse from Terminal.
Making a Symlink
ln -s /opt/eclipse/eclipse /usr/local/bin/eclipse
After you can Start Eclipse JEE from Terminal simply with:
eclipse
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Create an Eclipse Desktop Launcher for Easy-Starting:
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Recommended Oracle JDK Installation
Required to Get the Best Results from Eclipse.