Academic Integrity:

For assignments, students are encouraged to consult each other, the lecturer, tutor or anyone else for that matter. However, the assistance offered or accepted should not go beyond a discussion of the problem and a sketch of a solution. But in your assignment, do not use any written material from the discussion/website/book. If you can reconstruct the discussion and complete the solution on your own, then you have learned the material (and that is the objective of this course!). 

Assignment 2 Specification

Assignment description: Write a detailed algorithm and a Java program “TradeBot” to

simulate online buying and selling of books. The following activities of the TradeBot are to be implemented:

1. To have a central TradeBot account for all financial transactions and display the balance of the TradeBot account when requested.

1. Procedures to be incorporated as part of purchase:

1. To create a database of books with title, author name, price and number of copies.
2. To display the available books with cost and number of copies for the customer.
3. To implement the following functionalities of a shopping cart:
   1. Add an item to the cart
   2. Remove an item from the cart
   3. View the items in the cart before purchasing
   4. Empty the cart
   5. Exit the cart with or without purchasing
   6. Calculate the amount(cost) for the books in the cart
   7. Verify if the amount in the shoppers account is enough to buy the books in the cart

• The following activities are to be incorporated as part of selling books by the TradeBot:
  1. Registration of the sellers’ details
  2. Provision for getting the username and password interactively and storing them with an identification number (ID).
  3. Authentication of the users when they log in
  4. Add books to central database when a registered user sells the books and credit the amount to the seller’s account

   The program must perform the following:

• Open TradeBot account using a variable called “balance” (may use private and static type).

(2 marks)

• Initially create a database of 20 books with title, author of the book, price and number of copies. (Hint: may use different arrays to store the details with book id as array index).

(2 * 3 = 6 marks)

• Allow the shopper to view the available books with price and volumes, add and remove items to the shopping cart and accordingly update the number of copies in the database.

(3+2+2+3 = 10 marks)

• Options for the shopper to exit from the program anytime.                        (1 mark)
• Running calculator that keeps adding the cost of the book as soon as it is added to the cart

(3 marks)

• Caution the shopper if the cart cost is more than the shoppers balance in her/her account.

(2 marks)

• Clear the cart once the payment is done or if the shopper exits/quits. (1 marks)
• Option to register a shopper to sell books for the first time. (2 marks)
• Interactively set the username and password of the registered user. (4 marks)
• Authenticate the shoppers whenever they login as sellers.                     (4 marks)
• Add and display books that were recently sold by a shopper with the total amount that would be debited from the TradeBot account. (2 marks)
• Display the TradeBot account balance upon request. (1 mark)
• Display the balance of the shopper before and after trading.     (2 marks)

Submission Guidelines:

Your assignment should be completed according to the General Guidelines for Presentation of academic work. Your submission should contain the following:

1. The assignment Word file that will be submitted shall include:
   • Algorithm/flow chart
   • Complete Java program without syntax errors.
   • Must include appropriate and sufficient comments in the source code.
   • Screen shots of initial compilation results with syntax errors.
   • Trouble shooting the syntax errors

• The word file name must have your student ID as part of the file name.

2. Documentation should follow the standard submission guidelines as below:

1. Front page – indicating your Group members’ names and student IDs, teaching staff (Lecturer’s and tutor’s name), a statement of what has been completed and acknowledgement of the names of all assisted you.
2. List of references used (IEEE style) – Reference sources must be cited in the text of the report, and listed appropriately at the end in a reference list. Only IEEE referencing style is acceptable for this assignment.
3. The assignment must be submitted using Moodle, one submission for your group. The page numbers of the assignment must be clear on each page. The report document must be checked for similarity through Moodle/Turnitin while submitting it. Please refer to the study skills unit staff if you need further assistance. Please note that only one member per group should submit the report.

4. The group members will have to present the algorithm in Week 10 during the lab hours and demonstrate in Week 11. All the group members will have to demonstrate. If any member of the group fails to demonstrate, he/she will lose the demonstration marks.

Marking criteria: