Mac下多版本JDK安裝

[[ -s "$HOME/.profile" ]] && source "$HOME/.profile" # Load the default .profile

[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session *as a function*

#添加JDK的環境變量
export JAVA_8_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home
export JAVA_9_HOME=/Library/Java/JavaVirtualMachines/jdk-9.0.1.jdk/Contents/Home

#默認JDK1.8
export JAVA_HOME=$JAVA_8_HOME
#alias命令動態切換JDK版本
alias jdk8="export JAVA_HOME=$JAVA_8_HOME"
alias jdk9="export JAVA_HOME=$JAVA_9_HOME"

PATH=$JAVA_HOME/bin:$PATH:.
CLASSPATH=$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:.
export JAVA_HOME
export PATH
export CLASSPATH

感謝做者：https://www.jianshu.com/p/072981dc9cc2