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java: 13,33:5b8a42f3905b406298b72d750b6919f6
https://openjdk.java.net/
Not installed
From: https://github.com/Homebrew/homebrew-cask/blob/master/Casks/java.rb
==> Name
OpenJDK Java Development Kit
==> Artifacts
jdk-13.jdk -> /Library/Java/JavaVirtualMachines/openjdk-13.jdk (Generic Artifact)

$ brew cask install java
$ java -version

openjdk version "13" 2019-09-17
OpenJDK Runtime Environment (build 13+33)
OpenJDK 64-Bit Server VM (build 13+33, mixed mode, sharing)

$ brew install jenv
$ exec $SHELL -l

$ jenv doctor
[OK]    No JAVA_HOME set
[ERROR] Java binary in path is not in the jenv shims.
[ERROR] Please check your path, or try using /path/to/java/home is not a valid path to java installation.
    PATH : /usr/local/Cellar/jenv/0.5.2/libexec/libexec:/Users/xxx/.cargo/bin:/Users/xxx/.pyenv/shims:/Users/username/.pyenv:/Users/xxx/.nvm/versions/node/v8.11.4/bin:/Users/xxx/bin:/usr/local/bin:/Users/xxx/.cargo/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/go/bin:/Users/xxx/Documents/Projects/golang/bin
[ERROR] Jenv is not loaded in your zsh
[ERROR] To fix :    cat eval "$(jenv init -)" >> /Users/xxx/.zshrc

cat eval "$(jenv init -)" >> /Users/xxx/.zshrc
cat: eval: No such file or directory
cat: export PATH="/Users/xxx/.jenv/shims:${PATH}"
export JENV_SHELL=zsh
export JENV_LOADED=1
unset JAVA_HOME
source '/usr/local/Cellar/jenv/0.5.2/libexec/libexec/../completions/jenv.zsh'
jenv rehash 2>/dev/null
jenv() {
  typeset command
  command="$1"
  if [ "$#" -gt 0 ]; then
    shift
  fi

  case "$command" in
  enable-plugin|rehash|shell|shell-options)
    eval `jenv "sh-$command" "$@"`;;
  *)
    command jenv "$command" "$@";;
  esac
}: No such file or directory

$ echo 'export PATH="$HOME/.jenv/bin:$PATH"' >> ~/.bash_profile
$ echo 'eval "$(jenv init -)"' >> ~/.bash_profile
$ exec $SHELL -l

$ echo 'export PATH="$HOME/.jenv/bin:$PATH"' >> ~/.zshrc
$ echo 'eval "$(jenv init -)"' >> ~/.zshrc
$ exec $SHELL -l

[OK]    No JAVA_HOME set
[ERROR] Java binary in path is not in the jenv shims.
[ERROR] Please check your path, or try using /path/to/java/home is not a valid path to java installation.
    PATH : /usr/local/Cellar/jenv/0.5.2/libexec/libexec:/Users/xxx/.jenv/shims:/Users/xxx/.cargo/bin:/Users/xxx/.pyenv/shims:/Users/username/.pyenv:/Users/xxx/.cargo/bin:/Users/xxx/.pyenv/shims:/Users/username/.pyenv:/Users/xxx/.nvm/versions/node/v8.11.4/bin:/Users/xxx/bin:/usr/local/bin:/Users/xxx/.cargo/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/go/bin:/Users/xxx/Documents/Projects/golang/bin:/Users/xxx/Documents/Projects/golang/bin
[OK]    Jenv is correctly loaded

$ jenv enable-plugin export
$ exec $SHELL -l

$ jenv add $(/usr/libexec/java_home)

$ jenv add /Library/Java/JavaVirtualMachines/jdk1.8.0_191.jdk/Contents/Home/

  system
* 1.8 (set by JENV_VERSION environment variable)
  1.8.0.191
  13
  openjdk64-13
  oracle64-1.8.0.191

$ jenv global 13
$ exec $SHELL -l 
$ java -version

$ jenv local 1.8
$ exec $SHELL -l 
$ java -version

$ jenv shell 1.8
$ java -version