OOP (Object Oriented Programming) Flashcards
3 advantages of OOP?
Any from:
Modular design is a way of designing a system that breaks a whole system down into smaller chunks.
Programs are written in modules, which means it is easy to amend
programs as only the effected module needs editing.
It is easier to add new functionality to a program by adding a new module.
Groups of programmers can work independently on self contained modules.
Objects can inherit attributes and behaviours making code reusable.
It is less likely that changes made to the code will inadvertently affect the results of another routine.
Libraries can be created enabling code to be reused easily
What is encapsulation?
Encapsulation is the concept of keeping data and the code withing the same object.
The code is known as methods which are the subroutines contained within an object that are designed to perform particular tasks on the data within an object
What is a class in Oop?
A class is a blueprint or master copy for a related group of things.
It contained properties which describe what the data is.
It contains methods.
It does not store any data.
Classes can be created based on other classes
What are objects in Oop?
Objects are created from a class.
Every object is defined as an instance of a class so will have the same properties and methods from the class from which it is built.
It will also contain the data on which the methods will be run.
The data for each object is stored in memory.
What is instantiation in Oop?
Instantiation is the process of creating an object from a class.
It creates an actual instance of an object using the properties and methods described in the class.
When programming, there is a subroutine called a constructor which is used to create the object based on the info within the class from which it is being created.
What is inheritance in Oop?
Inheritance is the same concept as in bio.
Classes can inherit methods and properties from other classes.
What are some facts about inheritance in Oop?
The parent class is called the Super Class.
Inherited classed are sub classes
A subclass can override a method in the super class, of the same name, from the superclass a method of the same name from the super class is written in it.
The super class method can be called by including “super’ when calling it
