I have several switch statements which test an enum. All enum values must be handled in the switch statements by a case s
If you're using Android Studio (at least version 3 and up) you can activate this exact check in the inspections setting. This might be available on other IntelliJ Java IDE's as well.
Go to Preferences/Inspections. In the Java/Control flow Issues section, check the item Enum 'switch' statement that misses case. Optionally you can change severity to Error to make it more obvious than a warning.