setJDK

gistfile1.txt

function setJDK() {

    local USAGE="Usage: setJDK [-v \${JDK_VERSION}] [-d \${JDK_DISTRIBUTION}]"

    local OPTIND v d
    while getopts "v:d:" OPTION; do
        case "$OPTION" in
            v)
                local version=$OPTARG
                ;;
            d)
                local dist=$OPTARG
                ;;
            ?)
                echo $USAGE
                return 1
                ;;
        esac
    done

    if [ $# -lt 1 ]; then
        echo $USAGE
        return 1
    fi

    if [ -n "$version" ] && [ "$dist" ]; then
        echo "Setting JAVA to version $version and distribution $dist"
        local versionAndDistNo=$($java_home -V 2>&1 | grep $dist | grep $version | wc -l)
        if [ "$versionAndDistNo" -gt 1 ];then
            echo "Multiple JAVA versions found for arguments -v $version -d $dist . Unable to setJDK"
            listJDKs
            return 1
        else
            export JAVA_HOME=$($java_home -V 2>&1 | grep $dist | grep $version | tr ' ' '\0' | tr '\t' ' ' | cut -d ' ' -f 3)
        fi
    elif [ -n "$dist" ]; then
        echo "Setting JAVA to distribution $dist"
        local distNo=$($java_home -V 2>&1 | grep $dist | wc -l)
        if [ $distNo -gt 1 ];then
            echo "Multiple versions for $dist. Unable to setJDK"
            listJDKs
            return 1
        else
            export JAVA_HOME=$($java_home -V 2>&1 | grep $dist | tr ' ' '\0' | tr '\t' ' ' | cut -d ' ' -f 3)
        fi
    elif [ -n "$version" ]; then
        echo "Setting JAVA to version $version"
        export JAVA_HOME=$($java_home -v $version)
    else
        echo $USAGE
    fi

    echo "JAVA_HOME=${JAVA_HOME}"
    return 0
}