Could not determine java version from '9.0.1'

Question

This issue was in gradle version lower than 4.3, so update your gradle.properties to 4.3 or above:

distributionUrl=https\://services.gradle.org/distributions/gradle-4.3-all.zip

Why this error occur?: Because of you have different JDK on your system than your android-studio JDK version.

Therefore your JDK should be compatible with each other, and by following this way you can manage that:

File -> Other settings -> Default project structure

You can use embedded JDK or use your own.

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Also you may have some issues with terminal, and that's belong to a conflict between your multiple JDK.

Solution worked with me is to uninstall the java 9 JDK.

I had this problem on macOS and I solved it by:

Removing the too new java jdk

brew cask uninstall java

And installing an older one

brew tap caskroom/versions
brew cask install java8

All this handled via Homebrew

You should also delete Java JDK. Just run the following:

1. cd /Library/Java/JavaVirtualMachines
2. sudo rm -rf jdk1

Now check typing 'java' in your terminal.

For more references you can look here: https://www.howtogeek.com/230145/how-to-uninstall-java-on-mac-os-x/

In my case the error was

Could not determine java version from '10'.

I went to preferences in Unity (edit > preferences in windows or Unity > preferences in MAC), external tools, JDK dir and changed went up a couple of levels. I was using JDK 10, but changed to the folder of JDK 8 and this solved the issue.