How to install OpenJDK 11 on Mac using brew

In this tutorial, I will show you how to install OpenJDK 11 Mac. You have to pay for Oracle JDK so it’s better to use OpenJDK.

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OpenJDK (Open Java Development Kit) is a free and open-source implementation of the Java Platform, Standard Edition (Java SE).^[1] It is the result of an effort Sun Microsystems began in 2006. The implementation is licensed under the GNU General Public License (GNU GPL) version 2 with a linking exception. Were it not for the GPL linking exception, components that linked to the Java class library would be subject to the terms of the GPL license.

Requirements

brew should be installed (https://brew.sh/)

Read Also: How to install Java 8 on Debian

1. Brew tap

First of all, we need to tap a brew repo. Execute the following command:

$ brew tap AdoptOpenJDK/openjdk

The above will add more repositories to brew.

2. Install OpenJDK 11 Mac

After adding tap, let’s install OpenJDK using brew.

$ brew cask install adoptopenjdk11

Or on newer version

$ brew install --cask adoptopenjdk11

So, now we have installed Java 11, we can check the installation with the following command.

3. Check JDK Version

Now we can check the JDK version.

# java -version openjdk version "11.0.2" 2019-01-15 OpenJDK Runtime Environment AdoptOpenJDK (build 11.0.2+9) OpenJDK 64-Bit Server VM AdoptOpenJDK (build 11.0.2+9, mixed mode)

Now Java has installed properly.

4. Java Location

Now let’s check the java path.

# which java /usr/bin/java

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6 Comments Posted

Vasyl August 27, 2019 at 4:19 pm

Chetan thank you for this useful directions.
In my case because of access restriction I got this error:
Error: Permission denied @ dir_s_mkdir – /usr/local/Caskroom/adoptopenjdk11/11.0.4,11
Next command resolved issue:
sudo chown -R $(whoami) /usr/local/Caskroom/adoptopenjdk11

- Chetan Kapoor August 27, 2019 at 5:24 pm
  
  Hey Vasyl,
  
  Cool, Thanks for the solution.
  
Michael Kay March 4, 2020 at 3:32 pm

You need to explain what to do next if “java -version” shows an old version.

- Chetan Kapoor March 10, 2020 at 2:05 pm
  
  Hey Michael,
  
  Thanks for reaching out. If the java -version shows the old version that means the new version is not installed properly. brew automatically adds the new version to the path.
  Alternatively, you can find where new version is installed and link it to the /usr/bin/java like this:
  sudo ln -s /path/of/java /usr/bin/java
  
  You can find java using locate or find command also.
  
Ron Kagan January 21, 2021 at 6:41 am

For users of MAC with ARM, you’ll want to prepend arch -arch x86_64 so, you’d run:

“`
arch -arch x86_64 brew tap AdoptOpenJDK/openjdk
“`

Gaetan Babar March 18, 2021 at 1:08 pm

He doesn’t really need to. He is doing you a favour already, explaining everything else. This is the problem with our industry. People like you who feel entitled for everything.