Install Oracle JDK 8 for use with SDKMAN (test macos not working)

sdkman_oracle_jdk_macos.sh

#!/bin/bash
#
# not working atm, Install Oracle JDK 8 for use with SDKMAN on macOS 
# download not working...to fix
#

# https://download.oracle.com/otn/java/jdk/8u401-b10/4d245f941845490c91360409ecffb3b4/jdk-8u401-macosx-x64.dmg
# https://gist.github.com/wavezhang/ba8425f24a968ec9b2a8619d7c2d86a6
set -eu

# Updated download URL for macOS DMG

DOWNLOAD_URL="https://javadl.oracle.com/webapps/download/GetFile/1.8.0_401-b10/4d245f941845490c91360409ecffb3b4/macosx-x64/jdk-8u401-macosx-x64.dmg"
DMG="jdk-8u401-macosx-x64.dmg"
MOUNT_POINT="/Volumes/JDK 8 Update 391"
PKG="JDK 8 Update 401.pkg"
SDK_ID="8.0.401-oracle"

if [[ -z ${SDKMAN_DIR:-} ]]; then
  echo 'Error: ${SDKMAN_DIR} not defined'
  exit 1
fi

mkdir -p "$SDKMAN_DIR/candidates/java"
cd "$SDKMAN_DIR/candidates/java"

if [[ -e "$SDK_ID" ]]; then
  echo "$SDK_ID already installed"
  exit 0
fi

wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" "$DOWNLOAD_URL" -O "$DMG"
hdiutil attach "$DMG"
sudo installer -pkg "$MOUNT_POINT/$PKG" -target /
hdiutil detach "$MOUNT_POINT"
rm -f "$DMG"

echo "$SDK_ID installed"