IDEA changes the appearance (e.g. var) within the code - how can I change it back

Hi,

I recently updated to the latest IDEA version and now my java-code look-and-feel has changed. Instead of showing the Classname a "var" is shown. Instead of showing a getter, simply the property is shown and also some other magic "hides" the real code.

I am pretty sure this is only something in the settings, but I couldn't find it so far. Does anyone know, where to change this behaviour?

Thanks for your help!