Developing an authentication system for an application's user portal. Design a Java program that models the following scenario: (25 marks)

• Create a User class with attributes username and password.
• Implement an “AuthenticationSystem” class that:
• Has a method “register(User user)” to add new users.
• Has a method “login(String username, String password)” to authenticate users based on their provided username and password.
• Demonstrate the functionality by requesting a user to enter a username and password and then attempting to log in with both correct and incorrect credentials.