IB Computer Science Topic B3.1.5 Explaining and Applying the Concepts of Encapsulation and Information Hiding in OOP Revision Notes (SL/HL)

IB Computer Science Topic B3.1.5 Explaining and Applying the Concepts of Encapsulation and Information Hiding in OOP Revision Notes (SL/HL) | RevisionDojo

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The Principles of Encapsulation and Information Hiding

Encapsulation is the practice of bundling (or encapsulating) data and methods that operate on that data within a single unit, typically a class.
This ensures that the internal workings of the class are hidden from the outside world.
Information Hiding is a related concept that focuses on restricting access to certain parts of an object's data or implementation details.
This is achieved by using access modifiers to control which parts of a class are visible to other parts of the program.

Note

Encapsulation and information hiding are often used interchangeably, but they have distinct roles.
Encapsulation is the broader concept of bundling data and methods, while information hiding specifically refers to restricting access to certain parts of a class.

Applying Access Modifiers: Private and Public

Access modifiers are keywords that define the visibility of class members (variables and methods).

The most common access modifiers are:

Private:
1. Members declared as private are accessible only within the class itself.

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Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit

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Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

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Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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The Principles of Encapsulation and Information Hiding

Encapsulation is the practice of bundling (or encapsulating) data and methods that operate on that data within a single unit, typically a class.
This ensures that the internal workings of the class are hidden from the outside world.
Information Hiding is a related concept that focuses on restricting access to certain parts of an object's data or implementation details.
This is achieved by using access modifiers to control which parts of a class are visible to other parts of the program.

Note

Encapsulation and information hiding are often used interchangeably, but they have distinct roles.
Encapsulation is the broader concept of bundling data and methods, while information hiding specifically refers to restricting access to certain parts of a class.

Applying Access Modifiers: Private and Public

Access modifiers are keywords that define the visibility of class members (variables and methods).

The most common access modifiers are:

Private:
1. Members declared as private are accessible only within the class itself.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A1 Computer fundamentals4 subtopics

A2 Networks4 subtopics

A3 Databases4 subtopics

A4 Machine learning4 subtopics

B1 Computational thinking1 subtopic

B2 Programming5 subtopics

B3 Object-oriented programming2 subtopics

B4 Abstract data types (HL only)1 subtopic

IB Computer Science Topic B3.1.5: Explaining and Applying the Concepts of Encapsulation and Information Hiding in OOP Notes

A1 Computer fundamentals4 subtopics

A2 Networks4 subtopics

A3 Databases4 subtopics

A4 Machine learning4 subtopics

B1 Computational thinking1 subtopic

B2 Programming5 subtopics

B3 Object-oriented programming2 subtopics

B4 Abstract data types (HL only)1 subtopic

The Principles of Encapsulation and Information Hiding

Applying Access Modifiers: Private and Public

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

The Principles of Encapsulation and Information Hiding

Applying Access Modifiers: Private and Public

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account