title: Error:java: invalid source release: 8 in Intellij. What does it mean?
body: <p>Im trying to compile some code in I'm using Intellij Ultimate 13.1.4, but I get the following error and I have no idea what it means:</p>
  
  <pre><code>Information:Using javac 1.7.0_55 to compile java sources
  Information:java: Errors occurred while compiling module 'Example'
  Information:Compilation completed with 1 error and 0 warnings in 3 sec
  Information:1 error
  Information:0 warnings
  Error:java: invalid source release: 8
  </code></pre>
  
  <p>My guess is that its something related to Java 8 vs Java 7, but I have no idea what specifically. I've tried to Google around for this message, but they either talk about <code>javac</code> or <code>target release</code>, so it doesn't exactly seem to apply.</p>