Mac上Homebrew安装多版本Java

一、安装jdk11

安装命令

brew cask install java

安装过程

==> Satisfying dependencies
==> Downloading https://download.java.net/java/GA/jdk11/13/GPL/openjdk-11.0.1_osx-x64_bin.tar.gz
#################                                                         24.8%^C
➜  ~ brew cask install java
Updating Homebrew...
==> Satisfying dependencies
==> Downloading https://download.java.net/java/GA/jdk11/13/GPL/openjdk-11.0.1_osx-x64_bin.tar.gz
######################################################################## 100.0%
==> Verifying SHA-256 checksum for Cask 'java'.
==> Installing Cask java
Password:
🍺  java was successfully installed!

成功提示

➜  ~ java -version
openjdk version "11.0.1" 2018-10-16
OpenJDK Runtime Environment 18.9 (build 11.0.1+13)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.1+13, mixed mode)

jdk8安装过程相同

二、切换java版本

修改环境变量

# JDK 8
export JAVA_8_HOME="/Library/Java/JavaVirtualMachines/jdk1.8.0_192.jdk/Contents/Home"
# JDK 11
export JAVA_11_HOME="/Library/Java/JavaVirtualMachines/openjdk-11.0.1.jdk/Contents/Home"
#默认JDK 8
export JAVA_HOME=$JAVA_8_HOME

#alias命令动态切换JDK版本  
alias jdk8="export JAVA_HOME=$JAVA_8_HOME"    
alias jdk11="export JAVA_HOME=$JAVA_11_HOME"  

更新配置

source ~/.zshrc

切换版本

➜  ~ jdk8
➜  ~ java -version
java version "1.8.0_192"
Java(TM) SE Runtime Environment (build 1.8.0_192-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.192-b12, mixed mode)
➜  ~
➜  ~ jdk11
➜  ~ java -version
openjdk version "11.0.1" 2018-10-16
OpenJDK Runtime Environment 18.9 (build 11.0.1+13)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.1+13, mixed mode)