I keep getting this error even though I have a 1.6+ version (I have 1.8), and i'm working with IntelliJ. P.S. I have tried to update both, java jre and java jdk, didn't help!

<code>File</code> > <code>Project Structure</code> > <code>Project Settings</code> > <code>Modules</code> > <code>your Module name</code> > <code>Sources</code> > <code>Language Level</code> > choose the one which you need. <img src="https://i.stack.imgur.com/YtsnZ.png" alt="enter image description here">