Bash Java ENV functions.sh

#List installed Java versions
function jls() {
    /usr/libexec/java_home -V 2>&1 | grep -E "\d.\d.\d" | cut -d , -f 1 | colrm 1 4 | grep -v Home
}

#Change active java version
function jset() {
    local isLink=false
    if ! [ "x$JAVA_HOME" = "x" ]; then
        if [ -h $JAVA_HOME ]; then
            isLink=true
            sudo unlink $JAVA_HOME
        else 
            if ! [ -e "$JAVA_HOME" ]; then
                isLink=true
            fi
        fi
    else
        echo "JAVA_HOME env variable not set. It will be exported for this session but will be lost after restart"
    fi

    local newHome=$(/usr/libexec/java_home -v $1)
    if $isLink; then
        sudo ln -s $newHome $JAVA_HOME
    else
        export JAVA_HOME=$newHome
    fi
    
    java -version
}