In the apache netbeans blog there is a post about plugins for netbeans 9. In brief, you need to use the nb 8.2 update center.
On Sat, 11 Aug 2018, 07:49 Peter Steele, <steeleh...@gmail.com> wrote: > Hi > > I recently tried to upgrade from a pre 9.0 release in April to the 9.0 > release not that is has been released. I have found an issue on the > migration though. > > The update center has changed now and I can no longer install Groovy and > Grails plugin and because of this the Gradle plugin doesn't work anymore > (and all my projects use gradle) > > Is there a way to get around this? > > Thanks > > Peter > -- Marco Ambu