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Step-by-step guide

Step 1 - Installing System Updates and Prerequisites:

Install Brew : 

Usually this comes installed with your default Mac OS. You can verify this by typing the following command in the terminal.


~ brew --version


You should expect something similar to the output below - else install and upgrade brew here https://brew.sh/

Homebrew 2.0.4

Homebrew/homebrew-core (git revision c9a5; last commit 2019-03-11)

Homebrew/homebrew-cask (git revision 75af4; last commit 2019-03-12)

Install Java : 

Download Java 8 (Java SE Development Kit 8u201) from here - https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

Simply running the dmg file and following the instructions should work. Go to System Preferences  and ensure you have the Java icon below.


Switching Java versions :

You can switch between java versions if you don't want to downgrade your default Java installed on your Mac. This can be done by following the steps below:

Check how many java versions installed

/usr/libexec/java_home -V

Switch between Java X and Java 8 (the latter installed above) by adding this to your .bash_profile  and running source ~/.bash_profile afterwards

# Java 8
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home


Insatlling Java 8 using brew :

Similarly you can install java using brew by typing the following commands into a terminal and switching the default java version as stated above

brew cask install java
brew tap caskroom/versions
brew cask install java8


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