environment

OS：macOS Catalina 10.15.5 brew：2.4.3

Java installation using cask

If you use brew cask as it is, you cannot install an old version of Java. Therefore, use the following command to install older versions as well.

$ brew tap homebrew/cask-versions

Install various versions

//Check the installable java version
$ brew search java

// java14
$ brew cask install java

// java11
$ brew cask install java11

// java8
$ brew cask install adoptopenjdk8

//Java version check
$ /usr/libexec/java_home -V

Install anyenv

anyenv can manage * env. In this case, it is installed to manage jenv.

//Install anyenv with brew
$ brew install anyenv

//Path added zsh version
$ echo 'eval "$(anyenv init -)"' >> ~/.zshrc

//Manifest directory creation
$ anyenv install --init
with this.The anyenv directory is created.

//SHELL restart
$ exec $SHELL -l

//anyenv command
//Installed*env version check
$ anyenv versions

//Can be installed with anyenv*List of env
$ anyenv install -l

If the zshrc settings are not reflected, use source ~ / .zshrc to reflect them.

Enter a convenient anyenv login

The plugin is optional, but it is convenient to include it.

//Create directory for plugins
$ mkdir -p ~/.anyenv/plugins

// anyenv-I put it in update anyenv*A plugin that updates env in bulk
$ git clone https://github.com/znz/anyenv-update.git ~/.anyenv/plugins/anyenv-update

// anyenv-I put it in git anyenv*Plugin that can execute env with git command
$ git clone https://github.com/znz/anyenv-git.git ~/.anyenv/plugins/anyenv-git

Install jenv

Manage Java installed with cask

//install jenv
$ anyenv install jenv

//SHELL restart
$ exec $SHELL -l

//Verification
$ anyenv versions
jenv:
  system
  1.8
  1.8.0.252
  11
  11.0
  11.0.2
  14
  14.0
* 14.0.1 (set by /Users/masa/.anyenv/envs/jenv/version)
  openjdk64-1.8.0.252
  openjdk64-11.0.2
  openjdk64-14.0.1

Settings to manage Java with jenv

It is a method to register various Java versions in jenv and switch.

//Add to the associated jenv
$ jenv add `/usr/libexec/java_home -v "1.8"`
$ jenv add `/usr/libexec/java_home -v "11"`
$ jenv add `/usr/libexec/java_home -v "14"`

//Check the version of java managed by jenv
$ jenv versions

//global setting
$ jenv global 11.0.2

//Java version check
$ java versions

//Shell launch
$ jenv exec zsh

// JAVA_Set HOME automatically
$ jenv enable-plugin export

// JAVA_HOME confirmation
$ echo $JAVA_HOME

//Topic When using another version of JDK in a specific directory
$ jenv local 11.0.2

If the JAVA_HOME setting is not reflected properly, it may be reflected by restarting the terminal.