What is Class ?

• A class characterizes a set of objects that share a common structure and a common behavior
• A class is used as a template for the creation of similar objects
• An object is said to be an instance of a class

 

The operations & attributes defined in a class can be divided into two parts :

• Interface  of a class provides its outside view and therefore emphasizes the abstraction while hiding its structure and secrets of its behavior.
• Implementation  of a class is its inside view, encompassing secrets of its behavior.