Custom error throwing "Unhandled Exception Type" when called

[dragon_hatcher]

What am I doing wrong?

Here is my code:

void setup() {
  size(100, 100);

  throw new customException("test");
}

class customException extends Exception{
    
  customException(String message){
    super(message);
  }
}

[GoToLoop]

• Processing.org/reference/try.html
• Processing.org/reference/catch.html
• Docs.Oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Exception.html

void setup() {
  try {
    throw new CustomException("test");
  } 
  catch (final CustomException ex) {
    ex.printStackTrace();
    exit();
  }
}

class CustomException extends Exception {
  CustomException(final String msg) {
    super(msg);
  }
}