Object Oriented Programming 1 - Classes and Objects
This is the first in a series of videos that introduce object oriented programming (OOP) using Visual Basic.NET (VB.NET). This video explains the relationship between a class and an object. It shows how the public interface of a custom class can be coded, by declaring public variables within the class to define some simple properties, and by writing a public procedure to act as a simple method. How to create, that is instantiate, an object from a class is also demonstrated, then how values can be assigned to the properties of an object, how property values can be retrieved, and how an object’s methods can be called. The instantiation of multiple objects from a single class is also demonstrated. Later videos in this series will cover the use of class libraries, property procedures, constructors, method overloading and inheritance. The four fundamental principles of object oriented programming, namely, abstraction, encapsulation, inheritance and polymorphism will also be described with examples.
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