Brew install groovy fails

Question

When I try to run brew install groovy it tells me

groovy: Java 1.7+ is required to install this formula.
Install AdoptOpenJDK with Homebrew Cask:
  brew cask install adoptopenjdk
Error: An unsatisfied requirement failed this build.

I ran brew cask install adoptopenjdk like it says, but when I run brew install groovy again, I get a popup that says

“adoptopenjdk-13.0.2.jdk” cannot be opened because the developer cannot be verified.

Screenshot of the popup, stackoverflow won't let me embed images

Anyone seen this before or know what to do?

Answer 1

Go to "System Preferences", "Security & Privacy". In the "General" tab you hopefully will see an option to "Allow Anyway" for adoptopenjdk. The next time you run it there will still be a popup but this time you can "open" the program. Then... after that... no more pop ups.