IntelliJ IDEA 13 uses Java 1.5 despite setting to 1.7

Question

Despite specifying JDK 1.7 in all project settings (including in File -> Project Structure -> Project :: Project SDK), the following error is produced by

Answer 1

If nothing of this helps (my case), you can set it in your pom.xml, like this:

  1.7
  1.7

As this cool guy mentioned here: https://stackoverflow.com/a/25888116/1643465