Design a system to simulate a social media platform, such as Twitter or Facebook. The system should include classes to represent users, posts, comments, and likes. The User class should have attributes for the user's name, username, password, email, and a list of their posts. Users should be able to follow and unfollow other users and view their posts on their timelines. Users should also be able to send and receive private messages. The Post class should have attributes for the post's author, content, date and time, and a list of comments and likes. Users should be able to create new posts, delete their own posts, and comment on and like other users' posts. The Comment class should have attributes for the comment's author, content, date and time, and the post it belongs to. Users should be able to add and delete comments on a post. The Like class should have attributes for the user who liked the post and the post that was liked. Users should be able to like and unlike posts. To make the system more secure, implement proper authentication and authorization mechanisms, such as a login system for users. Draw a complete UML class diagram for the system, including all the classes, attributes, methods, and relationships among the classes. Implement the classes in Java and write a test program that creates and displays objects of the User, Post, Comment, and Like classes. The test program should also demonstrate inheritance, polymorphism, encapsulation, and other object-oriented concepts.
OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
Design a system to simulate a social media platform, such as Twitter or Facebook. The system should include classes to represent users, posts, comments, and likes. The User class should have attributes for the user's name, username, password, email, and a list of their posts. Users should be able to follow and unfollow other users and view their posts on their timelines. Users should also be able to send and receive private messages. The Post class should have attributes for the post's author, content, date and time, and a list of comments and likes. Users should be able to create new posts, delete their own posts, and comment on and like other users' posts. The Comment class should have attributes for the comment's author, content, date and time, and the post it belongs to. Users should be able to add and delete comments on a post. The Like class should have attributes for the user who liked the post and the post that was liked. Users should be able to like and unlike posts. To make the system more secure, implement proper authentication and authorization
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