CODEWITHSUNDEEP
javapathinstallationhomebrew
railgun
railgun

Reputation: 1021

java's path still /usr/bin/java after brew cask install java

I installed java with homebrew, using the command brew cask install java.

After successfully installing, I typed which java, and the path showed to be /usr/bin/java

When I typed brew cask info java, this showed up:

java: 1.8.0_102-b14 Java Standard Edition Development Kit

/usr/local/Caskroom/java/1.8.0_102-b14 (227.5M) https://github.com/caskroom/homebrew-cask/blob/master/Casks/java.rb Contents JDK 8 Update 102.pkg (pkg) Caveats This Cask makes minor modifications to the JRE to prevent issues with packaged applications, as discussed here: If your Java application still asks for JRE installation, you might need to reboot or logout/login.

Installing this Cask means you have AGREED to the Oracle Binary Code License Agreement for Java SE at

Did I forget to link something?

Upvotes: 27

Views: 48236

Answers (3)

Ovi Trif
Ovi Trif

Reputation: 401

Asking everyone landing to this Q&A to install jenv when their problem has nothing to do with jenv is off-topic.

While I am a big fan of jenv, this isn't the way IMHO, and it will lead everyone to waste time, just like it led me.

So, In order to fix /usr/bin/java pointing to the wrong JDK/JAVA, this is what you have to do, after you've even set up JAVA_HOME and it still ain't working:

# sudo ln -sfn source target
sudo ln -sfn /opt/homebrew/opt/openjdk@17/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk-17.jdk

Where:

  1. /opt/homebrew/opt/openjdk@17/libexec/openjdk.jdk is your source
    ie. the path where your JAVA, yet most likely JDK is installed
    • To find it automatically, run brew --prefix java
  2. /Library/Java/JavaVirtualMachines/openjdk-17.jdk is your target
    ie. the path which you want your /usr/bin/java to point towards.

Upvotes: 0

Mister Mister
Mister Mister

Reputation: 101

To add to @djangofan .. when I did a brew reinstall, I noticed the following message:

==> Pouring openjdk--17.0.1_1.big_sur.bottle.tar.gz
==> Caveats
For the system Java wrappers to find this JDK, symlink it with

  sudo ln -sfn /usr/local/opt/openjdk/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk

openjdk is keg-only, which means it was not symlinked into
/usr/local, because macOS provides similar software and
installing this software in parallel can cause all kinds of
trouble.

If you need to have openjdk first in your PATH, run:
 echo 'export PATH="/usr/local/opt/openjdk/bin:$PATH"' >> /Users/johndoe/.bash_profile

For compilers to find openjdk you may need to set:
  export CPPFLAGS="-I/usr/local/opt/openjdk/include"

To his point, I did not install via cask. I assume that when you did the install you got a similar message that you simply did not notice.

Upvotes: 5

Offirmo
Offirmo

Reputation: 19860

/usr/bin/java is a symlink.

To see where it points, type ls -la /usr/bin/java

brew cask is installing into /Library/Java/JavaVirtualMachines/jdk1.8.0_something.jdk/Contents/Home

If the previous command ls -la is matching this, you are good.

If not, it means that you previously had another java installation. In this case, you may want to use a tool like jenv to switch between your multiple installs.

Upvotes: 39

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