https://adoptopenjdk.net/
https://adoptopenjdk.net/index.html
https://adoptopenjdk.net/installation.html

https://blog.adoptopenjdk.net/

https://github.com/AdoptOpenJDK

https://hub.docker.com/r/adoptopenjdk/

2020
https://blog.adoptopenjdk.net/2020/06/adoptopenjdk-to-join-the-eclipse-foundation/
    https://www.reddit.com/r/java/comments/hbywy1/adoptopenjdk_to_join_the_eclipse_foundation/
2018
https://blog.joda.org/2018/08/java-is-still-available-at-zero-cost.html

qa
https://stackoverflow.com/questions/52431764/difference-between-openjdk-and-adoptopenjdk/52431765#52431765