It is a special type of class attribute (or class property, field, or data member). The capabilities of a class differ between programming languages, but generally the shared aspects consist of state (variables) and behavior (methods) that are each either associated with a particular object or with all objects of that class [1][2] object state can differ between each. Can use both instance and class variables classes may inherit from other classes, creating a hierarchy of classes Class variables (also called static member variables), where only one copy of the variable is shared with all instances of. Concrete manifestation of an object (class) in software developmentin computer science, an instance or token (from metalogic and metamathematics) is an occurrence of a software element that is based on a type definition
1.3.2 when created, an occurrence is said to have been instantiated, and both the creation process and the result of creation are called instantiation. The semantics of class inheritance vary from language to language, but commonly the subclass automatically inherits the instance variables and member functions of its superclasses. By default access to members of a.
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