I configured my project to use a Project Panama EA JDK, I can use jdk.incubator.foreign.* manually but Content Assist and Quick Fix don't suggest/fix anything from this package.
Is there a way to configure Content Assist or something?
(I looked into Preferences->Java->Editor->Content Assist, No luck there)
I had the same problem, and found that eclipse by default is configured to not assist with classes named jdk.*
.
I found this setting under Preferences -> Java -> Appearance -> Type Filters
Just remove jdk.*
from this list.
(You may add jdk.*.internal.*
instead)