Class variable

In object-oriented programming with classes, a class variable is a variable defined in a class of which a single copy exists, regardless of how many instances of the class exist.

A class variable is not an instance variable. It is a special type of class attribute (or class property, field, or data member). The same dichotomy between instance and class members applies to methods ("member functions") as well; a class may have both instance methods and class methods.

See also

• Class (computer programming)
• Instance (computer science)
• Object-oriented programming
• Variable (programming)

External links

• Class variable @ Wikipedia