Using JDK that is bundled inside Android Studio as JAVA_HOME on Mac

Add the correct string to .bash_profile (and reload with source .bash_profile):

1. MacOS versions before Big Sur: export JAVA_HOME=/Applications/Android\ Studio.app/Contents/jre/jdk/Contents/Home/.
2. Catalina, Big Sur, Mentere and above: export JAVA_HOME=/Applications/Android\ Studio.app/Contents/jre/Contents/Home

If you're using Catalina and above, you most probably use zsh as a shell instead of bash. In that case, add it to .zshrc or .zprofile instead of .bash_profile in your home directory.

Don't forget to restart the operating system after.

After that, running java -version gave this output and Java started to execute normally:

openjdk version "1.8.0_112-release"OpenJDK Runtime Environment (build 1.8.0_112-release-b06)OpenJDK 64-Bit Server VM (build 25.112-b06, mixed mode)

As for the Android Device Monitor — it still demands this ancient JRE version 6.

I just did a fresh install of Android Studio Arctic Fox 2020.3.1 on Big Sur, and I had to use the following.

export JAVA_HOME=/Applications/Android\ Studio.app/Contents/jre/Contents/Home/

On a slightly different topic, even with the correct JAVA_HOME, ~/Library/Android/sdk/tools/bin/sdkmanager wouldn't start. I had to install "Android SDK Command-line Tools (latest)" (from Android Studio) and use ~/Library/Android/sdk/cmdline-tools/latest/bin/sdkmanager instead.

The core problem is that starting from Android Studio Arctic Fox the destination of bundled java has been changed from:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/to:/Applications/Android Studio.app/Contents/jre/Contents/Home/

You just need to change JAVA_HOME env variable in .bash_profile to the new correct path (be careful with space character, easiest way just to specify path in doubled quotes). And either restart terminal or run source ~/.bash_profile.