Eclipse Outline View is empty

Question

A simple one today. My Outline view in eclipse does not show me any methods or fields anymore. I have selected the few options that are available in the outline vie

Answer 1

This works in my case:

1. Reinstall Eclipse.
2. Help -> Eclipse Marketplace -> directly install the windows builder.
3. Upgrade my JDK from version 11 to 15.

Good luck!