JDT is not dying.
I am the Executive Director of the Eclipse Foundation, and I am here to tell you that the commit numbers quoted in the blog post are completely bogus.
The stats shown on the Eclipse project pages only show the activity in the master branch. At the moment, the vast majority of the JDT activity is happening in a separate Java 9 branch. If you actually look at the git repositories directly (see link below for one repo), you can find a couple hundred commits in September, not zero.
The other thing going on is that the team has been in rampdown mode for the Mars.1 release shipping in the first week of October. A code freeze leading to a release is standard operating procedure for the Eclipse project.
In summary, this article is based on incorrect and incomplete numbers, and is entirely misleading.
http://git.eclipse.org/c/jdt/eclipse.jdt.core.git/stats/?per...