How to install Java 8 on osx macOS Mojave with Homebrew?

Question

At the moment Java 8 is still required for some apps like:

• Android SDK / Android Studio
• Jenkins
• Ionic ...

With brew install

Answer 1

Assumption: Mac machine and you already have installed homebrew.

Install cask (with Homebrew 0.9.5 or higher, cask is included so skip this step):

$ brew tap caskroom/cask
$ brew tap caskroom/versions

To install latest java:

$ brew cask install java

To install java 8:

$ brew cask install adoptopenjdk/openjdk/adoptopenjdk8

If you want to install/manage multiple version then you can use 'jenv':

Install and configure jenv:

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

Add the installed java to jenv:

$ jenv add /Library/Java/JavaVirtualMachines/jdk1.8.0_202.jdk/Contents/Home
$ jenv add /Library/Java/JavaVirtualMachines/jdk1.11.0_2.jdk/Contents/Home

To see all the installed java:

$ jenv versions

Above command will give the list of installed java:

* system (set by /Users/lyncean/.jenv/version)
1.8
1.8.0.202-ea
oracle64-1.8.0.202-ea

Configure the java version which you want to use:

$ jenv global oracle64-1.6.0.39

To set JAVA_HOME:

$ jenv enable-plugin export