Hello,
I am using Netbeans 11 with AdoptOpenJDK 8.0.212, and I cannot find a way to configure the Javadocs in the IDE. I get the message at the bottom that says "Either Javadoc documentation for this item does not exist or there is no attached Javadoc[...]". I see that the online documentation is located at http://bits.netbeans.org/11.0/javadoc/, but the IDE does not seem to like the URL. Note that this is specific to NB, the online Javadocs for the JDK work well. My problem is only when trying to configure packages like org.openide.ui or similar. Any help is appreciated.