MacOS JDK installation

MacOS JDK installation.md

After Sierra upgrade, all my JDK were removed. So here is how I reinstalled all of them with only brew commands, and manage them with jEnv.

First do all your mac updates (especially XCode), then:

Install Brew:

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Install JDK 8:

brew cask install java

Install other JDKs:

brew tap caskroom/versions
brew search java
brew cask install java7
brew cask install java6
brew cask install java9-beta

Upgrading

brew update
brew upgrade

Managing your JDKs globally, per shell or per folder with Jenv:

Website: http://www.jenv.be/

brew install jenv

Since I have zsh (see website for bash instructions), I also execute:

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

Source your profile again:

. ~/.zshrc

(for bash, you have to do the equivalent, )

. ~/.bash_profile

Then add your JDKs:

jenv add /Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/
jenv add /Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/
jenv add /Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/
jenv add /Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/
jenv add /Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home/
...

Then switch between them:

List managed JDKs

jenv versions

outputs:

  system
  1.6
  1.6.0.65
  1.7
  1.7.0.79
  1.7.0.80
* 1.8 (set by /Users/matc/.jenv/version)
  1.8.0.112
  9-ea
  oracle64-1.6.0.65
  oracle64-1.7.0.79
  oracle64-1.7.0.80
  oracle64-1.8.0.112
  oracle64-9-ea

Configure global version

jenv global 1.8

Configure local version (per directory)

jenv local 1.6

Configure shell instance version

jenv shell 1.6

brew cask install java

Installs Java 9 now. Please update your gist.