in Java please create two classes that correspond, log on and log off. Please explain all steps as well.

these are the instructions

it should be done in Java just written like regular code, I I would say simple code explanation

Log On Log Out Process Order Supplier Select Items Ship Order Make Order Customer View Invoice View Order View Stock Create Account Bank 1 Use case name: Log On Summary: Customer logs on into the system. Actor: Customer (or supplier) Precondition: None. Main sequence: 1. The customer enters the ID and password. 2. The system checks if the customer ID and password are valid. 3. The system displays a welcome message if the ID and password are valid. Alternative sequence: Step 3: If the customer's ID does not exist in the system, the system displays no account. Postcondition: Customer has logged on into the system. Use case name: Log Out Summary: Customer logs out system. Actor: Customer (or Supplier) Precondition: Customer logged on into the system. Main sequence: 1. The customer selects log out." 2. The system makes customers log out. Alternative sequence: None. Postcondition: Customer has logged out Online Shopping System (OSS) Problem Description An online shopping system and banking system's requirements are described in the use case model below: 1. Determine all classes for the use cases in the OSS. (refer to OOAD) 2. Implement each use case in the online shopping system in Java. (refer to Chapters 6-8) 3. Store customer account, order, stock, and catalog in each file or database) in the OSS, whereas stores customers' credit card accounts in a file or database) in the banking system. (refer to files) 4. The Oss and banking system shall be implemented using each separate thread, and they shall communicate with each other synchronously via a message buffer and response connector. (refer to Chapter 11) 5. Implement a graphical user interface for the online shopping system. (refer to user interface) Describe the assumptions you make Online Shopping System (OSS) - use cases Log On Log Out Process Order Supplier Sclect Items Ship Order Make Order Customer View Invoice View Order A View Stock Create Account Bank 1