How do I install Java on Mac OSX allowing version switching

Question

I want to install OpenJDK Java on Mac OSX and have it work alongside other JDK s since it is a newer release   Currently  I downloaded the tar gz and placed it in my path but that is hard to maintain     The only other install I found that do more things automatically is the install via Homebrew cask   It looks like only the current version too   brew cask info java   Shows       java  13 33 5b8a42f3905b406298b72d750b6919f6   https   openjdk java net    So I can install it from there  but then what   Am I stuck only with the new version

User · Answer

To stay with a specific major release  activate the AdoptOpenJDK tap with brew tap and then install the desired version with brew cask install    brew tap AdoptOpenJDK openjdk   brew cask install  lt version gt   To install AdoptOpenJDK 14 with HotSpot  run    brew tap AdoptOpenJDK openjdk   brew cask install adoptopenjdk14

User · Answer

Manually switching system-default version without 3rd party tools   As detailed in this older answer  on macOS  usr bin java is a wrapper tool that will use Java version pointed by JAVA HOME or if that variable is not set will look for Java installations under  Library Java JavaVirtualMachines  and will use the one with highest version  It determines versions by looking at Contents Info plist under each package   Armed with this knowledge you can    control which version the system will use by renaming Info plist in versions you don t want to use as default  that file is not used by the actual Java runtime itself   control which version to use for specific tasks by setting  JAVA HOME   I ve just verified this is still true with OpenJDK  amp  Mojave   On a brand new system  there is no Java version installed      java -version No Java runtime present  requesting install    Cancel this  download OpenJDK 11  amp  12ea on https   jdk java net   install OpenJDK11     cd  Library Java JavaVirtualMachines    sudo tar xzf   Downloads openjdk-11 0 1 osx-x64 bin tar gz   System java is now 11     java -version openjdk version  11 0 1  2018-10-16         Install OpenJDK12  early access at the moment      sudo tar xzf   Downloads openjdk-12-ea 17 osx-x64 bin tar gz    System java is now 12     java -version openjdk version  12-ea  2019-03-19         Now let s  hide  OpenJDK 12 from system java wrapper     cd jdk-12 jdk Contents    sudo mv Info plist Info plist disabled   System java is back to 11     java -version openjdk version  11 0 1  2018-10-16         And you can still use version 12 punctually by manually setting JAVA HOME     export JAVA HOME  Library Java JavaVirtualMachines jdk-12 jdk Contents Home   java -version openjdk version  12-ea  2019-03-19

User · Answer

You can use asdf to install and switch between multiple java versions  It has plugins for other languages as well  You can install asdf with Homebrew brew install asdf  When asdf is configured  install java plugin asdf plugin-add java  Pick a version to install asdf list-all java  For example to install and configure adoptopenjdk8 asdf install java adoptopenjdk-8 0 272 10 asdf global java adoptopenjdk-8 0 272 10  And finally if needed  configure JAVA HOME for your shell  Just add to your shell init script such as    zshrc in case of zsh       asdf plugins java set-java-home zsh

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This is how I did it  Step 1   Install Java 11 You can download Java 11 dmg for mac from here  https   www oracle com technetwork java javase downloads jdk11-downloads-5066655 html Step 2  After installation of Java 11  Confirm installation of all versions  Type the following command in your terminal   usr libexec java home -V  Step 3  Edit  bash profile sudo nano    bash profile  Step 4  Add 11 0 1 as default   Add below line to bash profile file   export JAVA HOME    usr libexec java home -v 11 0 1   to switch to any version export JAVA HOME    usr libexec java home -v X X X   Now Press CTRL X to exit the bash  Press  Y  to save changes  Step 5  Reload bash profile source    bash profile  Step 6  Confirm current version of Java java -version

User · Answer

Another alternative is using SDKMAN  See https   wimdeblauwe wordpress com 2018 09 26 switching-between-jdk-8-and-11-using-sdkman   First install SDKMAN   https   sdkman io install and then      Install Oracle JDK 8 with  sdk install java 8 0 181-oracle Install OpenJDK 11 with  sdk install java 11 0 0-open   To switch    Switch to JDK 8 with sdk use java 8 0 181-oracle Switch to JDK 11 with sdk use java 11 0 0-open   To set a default    Default to JDK 8 with sdk default java 8 0 181-oracle Default to JDK 11 with sdk default java 11 0 0-open

User · Answer

IMHO  There is no need to install all the additional applications packages   Check available versions using the command    gt   usr libexec java home -V Matching Java Virtual Machines  8       11  x86 64   Java SE 11-ea   Library Java JavaVirtualMachines jdk-11 jdk Contents Home     10 0 2  x86 64   Java SE 10 0 2      Library Java JavaVirtualMachines jdk-10 0 2 jdk Contents Home     9 0 1  x86 64    Java SE 9 0 1   Library Java JavaVirtualMachines jdk-9 0 1 jdk Contents Home     1 8 0 181-zulu-8 31 0 1  x86 64      Zulu 8      Library Java JavaVirtualMachines zulu-8 jdk Contents Home     1 8 0 151  x86 64    Java SE 8   Library Java JavaVirtualMachines jdk1 8 0 151 jdk Contents Home     1 7 0 80  x86 64     Java SE 7   Library Java JavaVirtualMachines jdk1 7 0 80 jdk Contents Home     1 6 0 65-b14-468  x86 64     Java SE 6   Library Java JavaVirtualMachines 1 6 0 jdk Contents Home     1 6 0 65-b14-468  i386   Java SE 6   Library Java JavaVirtualMachines 1 6 0 jdk Contents Home   Now if you want to pick Azul JDK 8 in the above list  and NOT Oracle s Java SE 8  invoke the command as below    gt   usr libexec java home -v 1 8 0 181  Library Java JavaVirtualMachines zulu-8 jdk Contents Home   To pick Oracle s Java SE 8 you would invoke the command    gt   usr libexec java home -v 1 8 0 151  Library Java JavaVirtualMachines jdk1 8 0 151 jdk Contents Home   As you can see the version number provided shall be the unique set of strings  1 8 0 181 vs 1 8 0 151

User · Answer

If you have multiple versions installed on your machine  add the following in bash profile      export JAVA HOME 7    usr libexec java home -v1 7       export JAVA HOME 8    usr libexec java home -v1 8       export JAVA HOME 9    usr libexec java home -v9    And add the following aliases      alias java7  export JAVA HOME  JAVA HOME 7       alias java8  export JAVA HOME  JAVA HOME 8       alias java9  export JAVA HOME  JAVA HOME 9    And can switch to required version by using the alias   In terminal      gt  gt  java7 export JAVA HOME  JAVA 7 HOME

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With Homebrew and jenv   Assumption  Mac machine and you already have installed homebrew   Install cask     brew tap caskroom cask   brew tap caskroom versions   To install latest java     brew cask install java   To install java 8     brew cask install java8   To install java 9     brew cask install java9   If you want to install manage multiple version then you can use  jenv    Install and configure jenv     brew install jenv   echo  export PATH   HOME  jenv bin  PATH    gt  gt     bash profile   echo  eval    jenv init -     gt  gt     bash profile   source    bash profile   Add the installed java to jenv     jenv add  Library Java JavaVirtualMachines jdk1 8 0 202 jdk Contents Home   jenv add  Library Java JavaVirtualMachines jdk1 11 0 2 jdk Contents Home   To see all the installed java     jenv versions   Above command will give the list of installed java     system  set by  Users lyncean  jenv version  1 8 1 8 0 202-ea oracle64-1 8 0 202-ea   Configure the java version which you want to use     jenv global oracle64-1 6 0 39

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Note  These solutions work for various versions of Java including Java 8  Java 11  and the new Java 15  and for any other previous Java version covered by the listed version managers   This includes alternative JDK s from OpenJDK  Oracle  IBM  Azul  Amazon Correto  Graal and more   Easily work with Java 7  Java 8  Java 9  Java 10  Java 11  Java 12  Java 13  Java 14  and Java 15  You have a few options for how to do the installation as well as manage JDK switching   Installation can be done by Homebrew  SDKMAN  Jabba  or a manual install   Switching can be done by JEnv  SDKMAN  Jabba  or manually by setting JAVA HOME   All of these are described below    Installation First  install Java using whatever method you prefer including Homebrew  SDKMAN or a manual install of the tar gz file   The advantage of a manual install is that the location of the JDK can be placed in a standardized location for Mac OSX   Otherwise  there are easier options such as SDKMAN that also will install other important and common tools for the JVM  Installing and Switching versions with SDKMAN SDKMAN is a bit different and handles both the install and the switching   SDKMAN also places the installed JDK s into its own directory tree  which is typically    sdkman candidates java   SDKMAN allows setting a global default version  and a version specific to the current shell   Install SDKMAN from https   sdkman io install  List the Java versions available to make sure you know the version ID sdk list java   Install one of those versions  for example  Java 15  sdk install java 15-open    Make 15 the default version  sdk default java 15-open  Or switch to 15 for the session  sdk use java 15-open    When you list available versions for installation using the list command  you will see a wide variety of distributions of Java  sdk list java  And install additional versions  such as JDK 8  sdk install java 8 0 181-oracle  SDKMAN can work with previously installed existing versions   Just do a local install giving your own version label and the location of the JDK  sdk install java my-local-13  Library Java JavaVirtualMachines jdk-13 jdk Contents Home  And use it freely  sdk use java my-local-13  More information is available in the SDKMAN Usage Guide along with other SDK s it can install and manage  SDKMAN will automatically manage your PATH and JAVA HOME for you as you change versions   Install manually from OpenJDK download page   Download OpenJDK for Mac OSX from http   jdk java net   for example Java 15   Unarchive the OpenJDK tar  and place the resulting folder  i e  jdk-15 jdk  into your  Library Java JavaVirtualMachines  folder since this is the standard and expected location of JDK installs   You can also install anywhere you want in reality    Install with Homebrew The version of Java available in Homebrew Cask previous to October 3  2018 was indeed the Oracle JVM   Now  however  it has now been updated to OpenJDK   Be sure to update Homebrew and then you will see the lastest version available for install   install Homebrew if you haven t already   Make sure it is updated   brew update   Add the casks tap  if you want to use the AdoptOpenJDK versions  which tend to be more current    brew tap adoptopenjdk openjdk  These casks change their Java versions often  and there might be other taps out there with additional Java versions   Look for installable versions   brew search java     or for AdoptOpenJDK versions   brew search jdk        Check the details on the version that will be installed   brew info java  or for the AdoptOpenJDK version   brew info adoptopenjdk   Install a specific version of the JDK such as java11  adoptopenjdk8  or adoptopenjdk13  or just java or adoptopenjdk for the most current of that distribution   For example   brew install java   brew cask install adoptopenjdk13    And these will be installed into  Library Java JavaVirtualMachines  which is the traditional location expected on Mac OSX  Other installation options  Some other flavours of OpenJDK are  Azul Systems Java Zulu certified builds of OpenJDK can be installed by following the instructions on their site   Zulu   is a certified build of OpenJDK that is fully compliant with the Java SE standard  Zulu is 100  open source and freely downloadable  Now Java developers  system administrators  and end-users can enjoy the full benefits of open source Java with deployment flexibility and control over upgrade timing   Amazon Correto OpenJDK builds have an easy to use an installation package for Java 8 or Java 11  and installs to the standard  Library Java JavaVirtualMachines  directory on Mac OSX   Amazon Corretto is a no-cost  multiplatform  production-ready distribution of the Open Java Development Kit  OpenJDK   Corretto comes with long-term support that will include performance enhancements and security fixes  Amazon runs Corretto internally on thousands of production services and Corretto is certified as compatible with the Java SE standard  With Corretto  you can develop and run Java applications on popular operating systems  including Linux  Windows  and macOS    Where is my JDK     To find locations of previously installed Java JDK s installed at the default system locations  use   usr libexec java home -V   Matching Java Virtual Machines  8   15  x86 64   quot OpenJDK 15 quot      Library Java JavaVirtualMachines jdk-15 jdk Contents Home 14  x86 64   quot OpenJDK 14 quot      Library Java JavaVirtualMachines jdk-14 jdk Contents Home 13  x86 64   quot OpenJDK 13 quot      Library Java JavaVirtualMachines openjdk-13 jdk Contents Home 12  x86 64   quot OpenJDK 12 quot      Library Java JavaVirtualMachines jdk-12 jdk Contents Home 11  x86 64   quot Java SE 11 quot      Library Java JavaVirtualMachines jdk-11 jdk Contents Home 10 0 2  x86 64   quot Java SE 10 0 2 quot      Library Java JavaVirtualMachines jdk-10 0 2 jdk Contents Home 9  x86 64    quot Java SE 9 quot   Library Java JavaVirtualMachines jdk-9 jdk Contents Home 1 8 0 144  x86 64    quot Java SE 8 quot   Library Java JavaVirtualMachines jdk1 8 0 144 jdk Contents Home   You can also report just the location of a specific Java version using -v   For example for Java 15   usr libexec java home -v 15    Library Java JavaVirtualMachines jdk-15 jdk Contents Home  Knowing the location of the installed JDK s is also useful when using tools like JEnv  or adding a local install to SDKMAN  or linking a system JDK in Jabba -- and you need to know where to find them  If you need to find JDK s installed by other tools  check these locations   SDKMAN installs to    sdkman candidates java  Jabba installs to    jabba jdk   Switching versions manually The Java executable is a wrapper that will use whatever JDK is configured in JAVA HOME  so you can change that to also change which JDK is in use  For example  if you installed or untar d JDK 15 to  Library Java JavaVirtualMachines jdk-15 jdk if it is the highest version number it should already be the default  if not you could simply set  export JAVA HOME  Library Java JavaVirtualMachines jdk-15 jdk Contents Home  And now whatever Java executable is in the path will see this and use the correct JDK  Using the  usr libexec java home utility as previously described helps you to create aliases or to run commands to change Java versions by identifying the locations of different JDK installations   For example  creating shell aliases in your  profile or  bash profile to change JAVA HOME for you  export JAVA 8 HOME    usr libexec java home -v1 8  export JAVA 9 HOME    usr libexec java home -v9  export JAVA 10 HOME    usr libexec java home -v10  export JAVA 11 HOME    usr libexec java home -v11  export JAVA 12 HOME    usr libexec java home -v12  export JAVA 13 HOME    usr libexec java home -v13  export JAVA 14 HOME    usr libexec java home -v14  export JAVA 15 HOME    usr libexec java home -v15   alias java8  export JAVA HOME  JAVA 8 HOME  alias java9  export JAVA HOME  JAVA 9 HOME  alias java10  export JAVA HOME  JAVA 10 HOME  alias java11  export JAVA HOME  JAVA 11 HOME  alias java12  export JAVA HOME  JAVA 12 HOME  alias java13  export JAVA HOME  JAVA 13 HOME  alias java14  export JAVA HOME  JAVA 14 HOME  alias java15  export JAVA HOME  JAVA 15 HOME     default to Java 15 java15  Then to change versions  just use the alias  java8 java -version   java version  quot 1 8 0 144 quot   Of course  setting JAVA HOME manually works too   Switching versions with JEnv JEnv expects the Java JDK s to already exist on the machine and can be in any location  Typically you will find installed Java JDK s in  Library Java JavaVirtualMachines    JEnv allows setting the global version of Java  one for the current shell  and a per-directory local version which is handy when some projects require different versions than others   Install JEnv if you haven t already  instructions on the site http   www jenv be  for manual install or using Homebrew   Add any Java version to JEnv  adjust the directory if you placed this elsewhere   jenv add  Library Java JavaVirtualMachines jdk-15 jdk Contents Home   Set your global version using this command  jenv global 15    You can also add other existing versions using jenv add in a similar manner  and list those that are available   For example Java 8  jenv add  Library Java JavaVirtualMachines jdk1 8 0 144 jdk Contents Home  jenv versions  See the JEnv docs for more commands   You may now switch between any Java versions  Oracle  OpenJDK  other  at any time either for the whole system  for shells  or per local directory  To help manage JAVA HOME while using JEnv you can add the export plugin to do this for you    jenv enable-plugin export   You may restart your session to activate jenv export plugin echo export plugin activated  The export plugin may not adjust JAVA HOME if it is already set  so you may need to clear this variable in your profile so that it can be managed by JEnv  You can also use jenv exec  lt command gt   lt parms    gt  to run single commands with JAVA HOME and PATH set correctly for that one command  which could include opening another shell   Installing and Switching versions with Jabba Jabba also handles both the install and the switching   Jabba also places the installed JDK s into its own directory tree  which is typically    jabba jdk   Install Jabba by following the instructions on the home page   List available JDK s jabba ls-remote  Install Java JDK 12 jabba install openjdk 1 12 0  Use it  jabba use openjdk 1 12 0   You can also alias version names  link to existing JDK s already installed  and find a mix of interesting JDK s such as GraalVM  Adopt JDK  IBM JDK  and more   The complete usage guide is available on the home page as well  Jabba will automatically manage your PATH and JAVA HOME for you as you change versions

User · Answer

This answer extends on Jayson s excellent answer with some more opinionated guidance on the best approach for your use case   SDKMAN is the best solution for most users   It s easy to use  doesn t have any weird configuration  and makes managing multiple versions for lots of other Java ecosystem projects easy as well  Downloading Java versions via Homebrew and switching versions via jenv is a good option  but requires more work   For example  the Homebrew commands in this highly upvoted answer don t work anymore   jenv is slightly harder to setup  the plugins aren t well documented  and the README says the project is looking for a new maintainer   jenv is still a great project  solves the job  and the community should be thankful for the wonderful contribution   SDKMAN is just the better option cause it s so great  Jabba is written is a multi-platform solution that provides the same interface on Mac  Windows  and PC  it s written in Go and that s what allows it to be multiplatform    If you care about a multiplatform solution  this is a huge selling point   If you only care about running multiple versions on your Mac  then you don t need a multiplatform solution   SDKMAN s support for tens of popular SDKs is what you re missing out on if you go with Jabba   Managing versions manually is probably the worst option   If you decide to manually switch versions  you can use this Bash code instead of Jayson s verbose code  code snippet from the homebrew-openjdk README  jdk             version  1         export JAVA HOME    usr libexec java home -v quot  version quot            java -version     Jayson s answer provides the basic commands for SDKMAN and jenv   Here s more info on SDKMAN and more info on jenv if you d like more background on these tools

[java] How do I install Java on Mac OSX allowing version switching?

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