Unable to open *.java files in eclipse after installing PyDev

Question

I installed PyDev in eclipse to add support for python,

it's was going great until I found out I cannot open *.java files anymore, but when I uninstall PyDev, I can open *.java files.

Can anyone explain?

Answer 1

This was some regression en Eclipse itself (as nothing changed in the area in PyDev in many years but Eclipse 2022-03 started misbehaving when the PyDev Navigator Content is enabled in the Project Explorer -- or maybe they fixed some bug that PyDev relied on 😄).

I still need to investigate if this is fixable in the PyDev side...

Right now the workarounds available are:

1. Don't use the Project Explorer (i.e.: keep to the Package Explorer or PyDev Package Explorer).
2. Disable PyDev Navigator Content in the Project Explorer (see image below).