How do I add execution environment 1.8 to Eclipse Luna?

Question

I have jre8 installed and set as the default for the jre but under compiler compliance I can\'t find 1.8 and under execution environment I can\'t find javaSE 1.8. I\'m using

Answer 1

If the eclipse version is old as @mike stated in his answer then you would be unable to view the JavaSE-1.8 on the Execution Environments list in your eclipse; You can do the following to use it even on older versions:

• Help --> Install New Software
• Place the following URL --> http://download.eclipse.org/eclipse/updates/4.3-P-builds/
• Install the plugins and restart eclipse.
• Now if you have JDK 1.8 on your computer and added it as an installed JRE you'd be able to view and use JavaSE-1.8

Or just download and use the latest eclipse