Eclipse IDE - Error: Build path specifies execution environment Java SE 1.7

Question

In Eclipse, I am getting an error:

Build path specifies execution environment Java SE 1.7.
There are no JREs installed in the workspace that are st

Answer 1

I have this situation because I have multiple JDKs, and the JREs are nested below them. I'm building a JRE8 project but my current default is the latest v11. So the challenge is to get Eclipse to recognize the JDK>JREv8.

1. Go to Preferences > Java > Installed JREs.
2. Click Add.
3. Navigate to the JRE under the JDK, which in my case is C:\Program Files\Java\jdk1.8.0_152\jre.
4. Change the JRE name to JDK8 JRE8 just for clarity.
5. Click Finish.

On build the error goes away. :)