Installing Oracle JDK for MacOS via Homebrew04 Feb 2019
MacOS has OpenJDK installed by default however I prefer to use Oracle’s version of JDK because its the official version. I don’t want to install it the same way Oracle instructs it on their docs as I find it very tedious. I’m a guy who loves automating stuff so I prefer to install it via Homebrew. I frequently do a clean install on my Mac every time there is a new version of OSX so I have to install JDK again and again. I’d rather just run a single installation script instead of heading over to Oracle’s website and following their instructions.
Steps to install and configure the Oracle JDK:
- Install Homebrew and Cask
- Install Oracle JDK
- Setup the JAVA_HOME environment variable
- Verifying installation
Homebrew is a package manager for Mac and has always been my preferred way to install my command line tools because I can integrate it with my setup scripts. To install it I’ll run
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
then I’ll install Homebrew Cask which is an extension of Homebrew. It makes the installation of large binaries and graphical applications simpler.
brew tap caskroom/versions
Before I install the JDK, I’ll check first which version it will install by default. I’m very picky about the version because most of the time I just use Java for Android development. I also prefer the older and more stable version of JDK so I run
brew cask info java
which will output
java: 11.0.2,9 https://jdk.java.net/ Not installed From: https://github.com/Homebrew/homebrew-cask/blob/master/Casks/java.rb ==> Name OpenJDK ==> Artifacts
This means that the latest version is JDK 11. I can install it now by running
brew cask install java
but I prefer to install JDK 8 over 11 so instead I’ll run
brew cask install java8
Once installed, I will set the JAVA_HOME environment variable by editing my .bash_profile
and inserting this line
and applying these changes by running
Now to confirm if the installation was sucessful I’ll run this command.
If the installation is successful, its output would be similiar to this
java version "1.8.0_202" Java(TM) SE Runtime Environment (build 1.8.0_202-b08) Java HotSpot(TM) 64-Bit Server VM (build 25.202-b08, mixed mode)
This tells me that I have installed the Oracle version of the JDK. However if the output is like this
java version "1.8.0_202" OpenJDK Runtime Environment (build 1.8.0_202-b08) OpenJDK 64-Bit Server VM (build 25.202-b08, mixed mode)
then I may have failed to install the JDK properly or the changes may not have been applied yet because I can see that OpenJDK is still being used. I’ll try to fix this by restarting my Mac then running “java -version” again.
Automating installation with a script
Below is a simple script to automate the installation of the latest Oracle JDK.
That’s it! Now you can automate your JDK installation on you Mac by running the script.