Apple - How can I install java openjdk 8 on High Sierra
Fastest Solution
Use the adoptopenjdk cask
See also https://discourse.brew.sh/t/how-to-install-openjdk-with-brew/712/4
To install latest:
brew cask install adoptopenjdk
To install a specific version
brew tap AdoptOpenJDK/openjdk
brew cask install adoptopenjdk8
brew cask install adoptopenjdk9
Manual Solution
If you are looking to just bring down the binary without actually installing it, simply navigate to https://adoptopenjdk.net
I found this is the easiest way to download and install. Navigate here and choose platform.
You can also install openjdk from Zulu, a commercial vendor that builds and releases OpenJDK free of charge here
You can just manually install it from the above link!