HomeBrew (brew) is a package manager to install software on macOS or Linux. Beside other packages, it’s possible to install Java on your system. The following steps will guide you through the installation.
First, check the available Java related formulas:
% brew search java
==> Formulae
app-engine-java java javacc jslint4java pdftk-java
google-java-format java11 javarepl libreadline-java Currently, there are two different version of Java: java and java11. To check the version of both, you can use the following commands:
% brew info java
openjdk: stable 16.0.1 (bottled) [keg-only]
Development kit for the Java programming language
https://openjdk.java.net/
Not installed
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/o/openjdk.rb
License: GPL-2.0-only with Classpath-exception-2.0% brew info java11
openjdk@11: stable 11.0.10 (bottled) [keg-only]
Development kit for the Java programming language
https://openjdk.java.net/
Not installed
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/o/openjdk@11.rb
License: GPL-2.0-onlyDepending on your requirements, you can install one of the above. For me, some of the libraries I use in Dart are currently not compatible with the latest Java version (16.0.1), so I decided to install Java 11 with LTS (long term support).
% brew install java11This will install Java version 11.0.10 as listed in the output of brew info java11 above. The output also shows the following hints:
For the system Java wrappers to find this JDK, symlink it with
sudo ln -sfn /usr/local/opt/openjdk@11/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk-11.jdk
openjdk@11 is keg-only, which means it was not symlinked into /usr/local,
because this is an alternate version of another formula.
If you need to have openjdk@11 first in your PATH, run:
echo 'export PATH="/usr/local/opt/openjdk@11/bin:$PATH"' >> ~/.zshrc
For compilers to find openjdk@11 you may need to set:
export CPPFLAGS="-I/usr/local/opt/openjdk@11/include"For me it was necessary to call the specified command to symlink the JDK, so that the system finds the java binary:
sudo ln -sfn /usr/local/opt/openjdk@11/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk-11.jdkTo see if Java was installed correctly, you can check the version of Java by typing in:
% java --version
openjdk 11.0.10 2021-01-19
OpenJDK Runtime Environment (build 11.0.10+9)
OpenJDK 64-Bit Server VM (build 11.0.10+9, mixed mode)That’s it: Java version 11.0.10 was installed and correctly symlinked!
Photo by Adam Wilson on Unsplash
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