0 CLASS AND OBJECTS CONCEPTS

CLASS AND OBJECTS CONCEPT

1. An objects is a self contained unit that combine code and data .Two EXAMPLE  of   objects ,you have already worked with the forms and form control.

2. A class is the code that define the characteristics of an objects .you can think of a class as a template for an objects. 

3. An objects is an instance of a class ,and the process of creating an class is called INSTANTIATION

4. More then one objects instance can be created from a single class.

5.A class can be based on an  existing class .In that case ,the existing class is referred to as an base class ,and the new class inherits the characteristics of the base class.