Homebrew is a package manager that makes it easy for us to install all sorts of development tools such as MySQL, Mongo, Ruby on Rails, and Java. Below are the steps required to install Java using Homebrew.
Step 0 - Install Homebrew
Homebrew does not come pre-installed with Mac, so you'll have to install it yourself. Thankfully, it's a single line of code that you paste into the terminal. Here are instructions on how to install Homebrew on Mac.
Approach #1 - Install Up-To-Date JDK
Update 10/24/20:java was migrated from homebrew/cask to homebrew/core.
This approach will
brew install java
Approach #2 - Install Directly from AdoptOpenJDK
Some projects require an older version of JDK (such as Java 8). The best thing to do is install AdoptOpenJDK.
brew tap adoptopenjdk/openjdk
Install Java 8
brew cask install adoptopenjdk8
Install Java 12
brew cask install adoptopenjdk12
Step 3 - Verify Your Work
brew info java
If brew keeps erroring out for no reason, I suggest running this command.
brew cleanup && brew cleanup
If you prefer downloadable installers, here's where you can download Java from Oracle's website.