Students need to take a copy of this wiki page for their documentation, See Wiki Documentation which has a link to a video demonstration

This is the first BlueJ application that will offer a user interface so that the application can be run by a user without using the BlueJ Object Bench. It is based on the Stock Manager which contained a list of products that were being stocked and sold.

This application uses the StockManager and Product classes from App04 and adds a user interface class StockApp and a Program class which can be used to run the application without having to create any objects first.

The InputReader class is there to assist simple user input in the terminal window sometimes referred to as the console or command window.

The application should be a standard Java Application with a Program class and a main() method which can be used without creating a Program object. The main() method in the Program class should create a StockApp which can print out a simple heading with the name of the application and the author name (you). It should look something like what is shown below

Most methods accesses by the user should include good, clear messages to the user (System.out.println), and any method should print out messages to the use that cover most of the simple mistakes a user could make. Marks will be deducted for unclear or incomplete messages to the user.

The first feature that is required by the user is to be offered a menu of choices. The user will enter their choice as a word, and in the first instance the menu can just offer the following choices:-

1. Add a new Product to stock list
2. Print all the products in stock
3. Quit the application

Once the basic menu is working then extend the menu to offer the following additional features. You may want to use the StockDemo class to add more products to the stock to make testing easier.

1. Remove a product from stock list
2. Deliver a quantity of product
3. Sell a quantity of product
4. Print all the products in stock
5. Search and print a list of products based on part of the product name
6. Low Stock print a list of products whose stock levels are low
7. Re-Stock Re-stock all the low stock items up to a set minimum level
8. Quit the application

I have investigated the different Java IDEs (Integrated Development Environments) as some of them support UML, and in particular JDeveloper by Oracle can be used to easily create a full class diagram (see below). JDeveloper also can create use case, sequence and activity diagrams. It is also free.

Best Java IDEs for 2020

Please watch this short video (10 mins) on how to extend BlueJ so that it can produce a more detailed Class diagram, however it is difficult to product and has no ability to show the relationships between the classes. The multi-project workspace extension, is in my view worth installing and I use it all the time. Similarly adding getter/setters automatically is worth using.
Installing BlueJ Extensions Video

Visual Paradigm is a full CASE (Computer Aided Software Engineering) tool that can generate code from diagrams and diagrams from code. Only the Standard Edition and above can create a class diagram from java code. So you can use that by downloading and installing the 1 month free trial edition.

Please watch this video How to Create Class and Use Case Diagrams using Visual Paradigm

The student must replace this UML diagram with their own class diagram!

The student must complete the following black box tests. The actual product and id can be changed

Test No	Proposed Test	Data Entered	Expected Result	Actual Result	Comments
01	Add Product	id = 111, Name = "Razer Ornata"	Product added	Product has been added	Function works as expected however there are no indicators whether a product has been added example "Product has been added"
02	Add Product	id = 112, Name = "Razer BlackWidow Keyboard"	Product added	Product has been added	When entering a ID number such as 155, an error comes up however when using an ID such as 112/113/114 it works as it should be.
03	Add Product	id = 113, Name = "Razer Tournament Keyboard"	Product added	Product has been added	Works as expected although same issues persist as Task 1 for add product
04	Add Product	id = 114, Name = "Razer Mini Huntsman Keyboard"	Product added	Product has been added	Works as expected although same issues persist as Task 1 for add product
05	Add Product	id = 120, Name = "Razer Siren Mic"	Product added	Product Has been added	Works as expected although same issues persist as Task 1 for add product
06	Add Product (duplicate ID)	id = 101, name = "New Product"	Error Message
07	Add Product (blank name)	id = 111, name = ""	Error Message
08	Remove Product	id = 101	Product is removed	Product removed	The remove function works as expected
09	Remove Product (invalid ID)	id = 203	Error Message	No error Message appeared
10	Print All Products	Print Chosen	10 products listed	All products has been listed
11	Deliver Product	id = 101, amount = 5	quantity = 5	Items Delivered	Function works fine
12	Deliver Product (-ve amount)	id = 102, amount = -4	Error Message	Doesn't Show error message	It doesn't add to the stock however there are no error message
13	Sell Product	id = 101, amount = 4	quantity = 10	Works Fine	There is not message that shows whether an Item has been sold
14	Sell Product (> stock)	id = 112, amount = 10	quantity = 0	Works fine	There is not message that shows whether an Item has been sold
15	Sell Product (-ve quantity)	id = 112, quantity = -2	Error Message	function works as expected	There are no error messages
16	Search Product	name = "Razer"	1 Product Listed	Product has not been listed	Error in coding, the function does not allow the listed products to be printed
17	Low Stock	amount = 2	3 Products Listed	No products has been listed	Error in code, doesn't allow the products to be listed

The student must provide a link to a text file recording (or recordings) of this testing from a terminal window

Tests 1 to 11.txt
Tests 12 to 17.txt

• Bluejay is highly unpractical as it can be very confusing when looking at codes and changing codes
• There are a lot of Bugs and issues with the program such as when a code have been written correctly and it still won't compile inside the editor which then the user would have to look at the Classes menu and compile it from there.
• The error messages when a code is written in a different way is very unclear and not at all helpful when trying to fix the codes.
• Related to the error point, the syntax is very weak when going back to fix the written code.
• The appearance of BlueJay is very clunky looking and not at all easy to understand when looking at it the first time, makes it harder for people who are not used the program struggle.