Just face a JDK crash when developing my Intellij IDEA plugin on macOS sierra. And it seems is a bug of OpenJDK according to this page: https://youtrack.jetbrains.com/issue/JRE-3，So I download a Jetbrain's custom JDK on this page: https://youtrack.jetbrains.com/issue/IDEA-15850 and fix the crash, but the download url provided in https://youtrack.jetbrains.com/issue/IDEA-158500 seems is not an stable one, just a bugfix version for a bug in macOS sierra.
So it's there an official download page for Jetbrain's custom JDK? I search on google and did not find any useful result. I also go to the installation folder of Intellij IDEA on my mac, and what is bundled into Intellij IDEA is a JRE not a JDK.