If we look around us, we can see a lot of things. These things are much pretty and straightforward, but when we look them carefully, they are made up of others things. Now I’m taking an example of mobile phone, by mobile phone we can call anybody when we have sim card:

MOBILE + SIM card = CALL ANYBODY

By above method we can call to anyone we want but how software works so let’s see:

Apps Tree


So the above diagram showing that the MAIN APPLICATION is controlled by the three classes. Now if we want to make a connection like inheritance where one object is based on another object:

Apps Tree

To standardize the communication between above classes, you must have things such as interfaces where you define a contraction that each class must implement:

Apps tree

Each of these topics contains of many other things like properties, methods, functions, abstract data types, constructors, class modifiers, polymorphism, overloading, etc. Hey guys just cool , you don’t need to afraid from these topics. All topics will make sense after you see them in friendlier fashion.

Conclusion:

So the conclusion is a composition of classes and interfaces which work together at one time are called OOPs(Object Oriented Programming).

Next time we’ll discuss about ActionScript 3.0