This server requires an execution environment of JavaSE-1.8, but no valid JRE was found. Caution is advised

Question

I use Eclipse 4.9 twice. one with jdk8 and one with openJDK11. With both I want to integrate Wildfly 14 Runtime via "Window -> Preferences -> Server -> Runtime Environment". The following error occurs when I select "OpenJDK-11.0.2" under Alternate JRE:

This server requires an execution environment of JavaSE-1.8, but no valid JRE was found. Caution is advised.

Thank you in advance for your views and possibly detailed solutions :)

Thanks for the tip. Do you have any idea how the above problem can be solved? — user3804191, May 06 '19 at 15:03

score 2 · Answer 1 · answered May 13 '22 at 13:41

2

sorry for my bad English. To resolve it, go to

Window -> Preference -> Java -> Compiler

And change the value of Compiler compliance level to 1.8 It work for me.

answered May 13 '22 at 13:41

Aime Soro

21
3

It worked as a charm! Thank you Aime. – Paulo May 26 '22 at 10:59

score 0 · Answer 2 · answered May 16 '22 at 08:09

Install an OpenJdk 11 JRE and rather select that as the execution environment.

That is Window -> Preference -> Java -> Installed JRE's

Although chances are you've already got that one installed so just select it from the execution environment.

Unless there's a good reason why you're wanting to use an alternate JRE.

This server requires an execution environment of JavaSE-1.8, but no valid JRE was found. Caution is advised

2 Answers2