Android license status unknown. Run `flutter doctor --android-licenses` to accept the SDK licenses. See https://flutter.dev/docs/get-started/install/windows#android-setup for more details. code example

Example 1: flutter license NoClassDefFoundError

# ANdroid Studio: Install Android SDK Command-line Tools:
> Tools > SDK Manager > Appareance & Behavior > System Setting> Android SDK
	> SDK Tools > Android SDK Command-line Tools (apply)

flutter doctor --android-licenses
flutter doctor -v

Example 2: flutter doctor --android-licenses java error

Installing Android SDK Command-line tools from Android SDK Manager did the job for me.

Open Tools > SDK Manager
From the left choose, Appearance & Behavior > System Settings > Android SDK
Select SDK Tools from the top menu
Check Android SDK Command-line tools and click 'apply'.