Class Diagram for Facebook

In this lesson, we’ll identify and design the classes, abstract classes, and interfaces based on the requirements that we have previously gathered from the interviewer in our Facebook social network system.

Components of Facebook

As mentioned earlier, we will design the Facebook social network using a bottom-up approach.

Account

The Account class identifies a Facebook user using their username and ID. Users with an account will have the option to create groups, pages, posts, comments, and like other comments and posts.

A representation of the class definition is provided below:

Admin

The Admin class comes into existence in a group or page created and is responsible for performing operations such as blocking or unblocking users, enabling or disabling pages.

The class diagram of this class is shown below:

Person

The Person class contains details like the name, address, phone number, and email. It is derived into the User class.

User

The User class is the main class of Facebook and is responsible for making various kinds of operations such as sending messages or friend requests to other users, creating or joining groups or pages, and numerous other operations.

The class diagram of these two classes are provided below:

Profile

The Profile class contains the personal information of a Facebook user, like their profile and cover pictures, their work and education details, and the list of places they’ve visited.

The visual representation of the Profile class is given below:

Work, education, and places

The Work, Education, and Places classes are used to provide relevant information and are involved in the Profile class.

The class representation of these classes is given below:

Page

The Page class represents a particular page that exists on the Facebook platform that will contain the name, ...