A [[class variable]], by contrast, is available to all instances of a class. It is a property which is the same for all objects. For example, the interior angle of every square is 90 degrees, no matter how wide the square is. | A [[class variable]], by contrast, is available to all instances of a class. It is a property which is the same for all objects. For example, the interior angle of every square is 90 degrees, no matter how wide the square is. |