In object-oriented programming with classes, a class variable is a variable defined in a class (i.e. a member variable) 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).
In Java, C#, and C++, class variables are declared with the keyword static, and may therefore be referred to as static member variables.
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. Again, Java, C#, and C++ use the keyword static to indicate that a method is a class method ("static member function").
Read more about Class Variable: Example
Famous quotes containing the words class and/or variable:
“History is full, down to this day, of the imbecility of kings and governors. They are a class of persons much to be pitied, for they know not what they should do.”
—Ralph Waldo Emerson (1803–1882)
“There is not so variable a thing in nature as a lady’s head-dress.”
—Joseph Addison (1672–1719)