The following steps will guide you through the installation of Java on macOS.
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:
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/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/Formulafirstname.lastname@example.org License: GPL-2.0-only
Depending 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 java11
This will install Java version 11.0.10 as listed in the output 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 called the specified command, so that the system finds the java binary:
sudo ln -sfn /usr/local/opt/openjdk@11/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk-11.jdk
To see if Java was installed correctly, you can check the version of Java:
% 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)
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