OOP Flashcards
Define Paradigm
Style of programming
What is procedural programming?
Each variable, constant, function is defined separately, no inherent relationship.
What is a class?
A template for creating a type of object.
What is a object?
An instance of a class.
What is OOP?
Each variable, function is associated with an object, this allows for values and subroutines to be easily group together.
What is a static attribute?
An attribute shared by all objects of a class.
What is encapsulation?
Grouping of data and subroutines via use of classes.
Why is encapsulation used?
To make error identification easier and to increase security by preventing access to variables/subroutines by other parts of the program.
What is an accessor?
A method which returns the value of a private attribute.
What is an mutator?
Methods which alter the value of a private attribute.
What is inheritance?
The copying of attributes and methods from one class to another.
What is abstract class?
A class with declared methods without specified functionality.
Why use abstract classes?
When all children classes require the method but with different implementations.
What happens when a class calls a super method?
It accesses the method called in its parents.
What is polymorphism?
The allowance of multiple methods to have the same name but different implementation.
What is overriding?
A polymorphism method. It allows a child to override the method of its parent. The virtual keyword may be needed to be overriden.
What is overloading?
A polymorphism method. It allows for multiple methods with the same name but different parameters to be used.
Why use polymorphism?
Allows the reuse of method names, making code easier to make and understand.
UML private
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UML public
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UML protected
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UML static
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UML abstract
italics
UML order
Name, Attributes, Methods
What is composition?
A class association where the existence of component objects is dependent on the composite object. BLACK DIAMOND.
What is aggregation?
A class association where the existence of component objects is independent on the composite object. WHITE DIAMOND.
