Flutter & Java Environment Fix on Windows 11

I'm experiencing several issues with my Flutter and Java setup on Windows 11.

The specific problems include:
- JAVA_HOME path issues
- Problems with the Android toolchain
- Errors related to environment variables
- Issues within both the Flutter and Java environments

I've already installed Flutter, Java, Android Studio, and VS Code, but I'm not certain if my environment variables are configured correctly.

What I need from you:
- Diagnose the existing issues with my setup
- Resolve any compatibility and setup problems
- Validate the environment setup by running test projects on an emulator

Please ensure that Flutter and Java work correctly after fixing the issues. Your expertise in diagnosing and resolving these types of problems is crucial for this project.

Flutter/Java/Android Studio/VS code are already installed
Launching lib\main.dart on sdk gphone64 x86 64 in debug mode...

ERROR: JAVA_HOME is set to an invalid directory: ...

Please set the JAVA_HOME variable in your environment to match the
location of your Java installation.
Error: Gradle task assembleDebug failed with exit code 1

Exited (1).