maxOS Zsh script to easily switch between Java versions

java.zsh

#!/usr/local/bin/zsh

# Add aliases for changing java runtime
alias j6='ju 1.6'
alias j7='ju 1.7'
alias j8='ju 1.8'
alias j9='ju 9'

# Prints the path to JAVA_HOME
alias jh=/usr/libexec/java_home

function jls() {
        echo "Use ´j6, j7, j8 and j9´ to conventiently switch between Java versions."
        echo "For a specific version use ´ju <version>´ where available versions are listed below:"
        /usr/libexec/java_home -V 2>&1 | grep -E "\d(.\d.\d)?" | cut -d , -f 1 | grep -v Home
}

function ju() {
        export JAVA_HOME=$(/usr/libexec/java_home -v $argv)
        export PATH=$JAVA_HOME/bin:$PATH
        launchctl setenv JAVA_HOME $JAVA_HOME
        java -version
}

export JAVA_HOME=$(/usr/libexec/java_home -v 1.8)
export PATH=$JAVA_HOME/bin:$PATH