In 2024, even if you can use just brew..
Copybrew install openjdk@17
Java will be installed here:
Copy/opt/homebrew/opt/openjdk@17/bin/java
for Apple Intel path is /usr/local/... rather than /opt/homebrew/...
For the system Java wrappers to find this JDK, symlink it with:
Copysudo ln -sfn /opt/homebrew/opt/openjdk\@17/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk
resp. for Intel
Copysudo ln -sfn /usr/local/opt/openjdk@17/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk
Now, running /usr/libexec/java_home -V should show the path to JAVA 17, something like:
Copy17.0.9 (x86_64) "Homebrew" - "OpenJDK 17.0.9" /opt/homebrew/Cellar/openjdk@17/17.0.9/libexec/openjdk.jdk/Contents/Home
(This is what you are missing btw, if javac or javac --version does not give you a command-not-found but an The operation couldn’t be completed. Unable to locate a Java Runtime.)
In case you see the wrong version, check if the path to JAVA_HOME is set correctly. If not, you could set it by:
Copyexport JAVA_HOME=\$(/usr/libexec/java_home)
...give a try to sdkman, it's far better than brew
Copycurl -s "https://get.sdkman.io" | bash
then open a new shell and try list to see what you could install ;-)
Copysdk list java
At time of writing you could use:
Copysdk install java 17.0.4.1-tem
Java will be installed here:
Copy/Users/YOUR_USERNAME_HERE/.sdkman/candidates/java/17.0.4.1-tem
Answer from freedev on Stack OverflowIn 2024, even if you can use just brew..
Copybrew install openjdk@17
Java will be installed here:
Copy/opt/homebrew/opt/openjdk@17/bin/java
for Apple Intel path is /usr/local/... rather than /opt/homebrew/...
For the system Java wrappers to find this JDK, symlink it with:
Copysudo ln -sfn /opt/homebrew/opt/openjdk\@17/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk
resp. for Intel
Copysudo ln -sfn /usr/local/opt/openjdk@17/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk
Now, running /usr/libexec/java_home -V should show the path to JAVA 17, something like:
Copy17.0.9 (x86_64) "Homebrew" - "OpenJDK 17.0.9" /opt/homebrew/Cellar/openjdk@17/17.0.9/libexec/openjdk.jdk/Contents/Home
(This is what you are missing btw, if javac or javac --version does not give you a command-not-found but an The operation couldn’t be completed. Unable to locate a Java Runtime.)
In case you see the wrong version, check if the path to JAVA_HOME is set correctly. If not, you could set it by:
Copyexport JAVA_HOME=\$(/usr/libexec/java_home)
...give a try to sdkman, it's far better than brew
Copycurl -s "https://get.sdkman.io" | bash
then open a new shell and try list to see what you could install ;-)
Copysdk list java
At time of writing you could use:
Copysdk install java 17.0.4.1-tem
Java will be installed here:
Copy/Users/YOUR_USERNAME_HERE/.sdkman/candidates/java/17.0.4.1-tem
Java doesn't mind if you install multiple versions. This is often required; java is not backwards compatible (it tries to change little, but e.g. the java8 to java9 transition broke a ton of stuff, much of it needless and much of it not reasonably expectable or fixable by libraries and apps, so a bunch of java apps and libraries only run on java8 - just an example).
So, yes, you have installed JDK17. Also, yes, if you just run java without specifying which one you want, you so happen to get java13 here.
To see all installed javas, you can run:
Copy/usr/libexec/java_home -V
to 'override', you can use something like (depends on which shell you're using on your mac):
Copyexport JAVA_HOME=`/usr/libexec/java_home -v 17`
(the backticks mean: Run this then take the output of it and treat that as the 'value' of the expression. here, assign it to the JAVA_HOME env var. -v 17 requests a path to java 17. The -V option lists all and is meant for your eyeballs, not for scripts. The -v option is mostly for scripting, and that's how we're using it here).
JAVA_HOME decides which java is used by some things, but the java you get when you just type java is /usr/bin/java, and that executable is actually just a wrapper that picks a java to run from amongst all installed versions. It uses JAVA_HOME to decide which java to actually run. There are wrappers for all the common commands (javac, too). You can always run e.g. which javac to see what that actually runs; you probably see /usr/bin/javac. Everything in /usr/bin is one of these wrapper thingies that looks at JAVA_HOME and then runs the binary it finds there.
macos - How to install java 17 on Mac using brew and setting up java_home? - Stack Overflow
how do i download Java 17
How to install java on Mac m1?
Folks with M1 Macbooks and Macs. Oracle's JDK17 now officially supports ARM.
Videos
Assuming brew is already installed and updated:
brew install openjdk@17
If using bash:
echo export "JAVA_HOME=\$(/usr/libexec/java_home)" >> ~/.bash_profile
Or using zsh (on macOS Catalina or newer), then it should be:
echo export "JAVA_HOME=\$(/usr/libexec/java_home)" >> ~/.zshrc
Restart your shell.
If you have multiple JDK versions installed, you can specify one, using -v flag:
echo export "JAVA_HOME=\$(/usr/libexec/java_home -v 17)" >> ~/.zshrc
Check the java version:
java --version
openjdk 17.0.2 2022-01-18
OpenJDK Runtime Environment (build 17.0.2+8-86)
OpenJDK 64-Bit Server VM (build 17.0.2+8-86, mixed mode, sharing)
If your setup is not too picky, here is one example:
- BlueJ suggesting OpenJDK from Adoptium
- Brew for Adoption OpenJDK is archived https://github.com/AdoptOpenJDK/homebrew-openjdk
- suggested replacement is:
Copybrew install --cask temurin