Really?? …
I can show you a few options for various Java IDE’s on Linux. 
(an advantage of having 30+ years Java / C(++) development)
How about we start with this one (that first screenshot shows on my desktop when launched) … the second screenshot is after it has finished loading and I’ve opened the “Settings” menu option.
To launch Eclipse IDE, I go to KDE menu → Development → and click on Eclipse
The screenshots are on my Leap 15.6 laptop.
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