Note: You should use NetBeans IDE for this Assignment.
No system requirements can be specified completely and accurately, using only the English language. Hence please make reasonable assumptions, where requirements are ambiguous. Ensure that you have documented them in your report. Clarify with the instructor on critical doubts.
System Requirements
You are assigned to implement a simple point-of-sale system for automating the University Souvenir Store.
The system, operated by the store keeper, will provide facilities to make payment, replenish stock, check inventory, member registration. The present system is GUI-based, with flat files to store data.
The design of your system should be flexible enough to cater to new requirements and/or changes in the requirements.
Currently there is only one user of the system – the store keeper.
2.1 General Requirements
2.1.1 User Interface
The application will be GUI-based using Java Swing APIs.
When the user starts the system, he/she is shown a login screen. Upon successful login, he/she is taken to a main menu screen in which various options are shown. This may take the user to other screens based on the option chosen. Each of the functions described below should end by returning the user to the main menu screen.
2.1.2 Data Files
The data for the inventory and users, as well as transaction records, are currently stored in text-based files. The exact formats of these files is detailed in a later section. It is mandatory that you use those formats.
The data files must be read when the application starts up, and updated whenever needed (e.g. when a new member is added, etc). The system should have the current state persisted at all times, so that even anomalous termination of the application does not result in loss of data.
2.1.2 External Hardware
The system will normally use bar-code readers to obtain the product code (from the product label) and the member id (from the membership card). However, for the time being, these bar-code readers are unavailable. Operators will therefore be prompted for the codes at the console.
Similarly, there will be a receipt printer and an adhesive label printer (for printing barcode labels). For this version of the software, you should build placeholder classes for these devices, that output text to the console.
2.2 Data Requirements
The products are classified into categories (“clothing”,”mugs”, “stationary”, “diaries”, etc.). Each category is identified by a “category id”, which is a three-letter code (e.g. “CLO” for “clothing”). The list of categories is not hardcoded, but rather stored in a data file named Category.txt as specified in a later section; categories can therefore be added by the store keeper.
2.2.2 Products
Each physical product in the store has a “product id” that identifies it uniquely. The product id is assigned automatically by the system, and consists of the category code, followed by a slash character, and a number which is assigned sequentially to products in the same category, starting from 1. For example, the twelfth product to be registered in the “clothing” category would be assigned a product id “CLO/12”. The list of products is stored in a data file named Products.txt as specified in a later section.
2.2.3 Vendors
The University keeps a list of vendors who supply the product. Vendors related information are stored in a data file named Vendors.txt as specified in a later section.
2.2.4 Transactions
Every billing transaction should be logged in a data file named Transactions.txt as specified in a later section.
2.2.5 Discounts
Discounts and other promotional offers are stored in a data file named Discounts.txt as specified in a later section.
2.2.6 Members
Staff and students can become members of the store and avail discounts. This requires submission of an application form accompanied by a document of identity (student or staff card).
Members are identified by their “member id”, which is identical to their student/staff card number. The list of members is stored in a data file named Members.txt as specified in a later section.
Note: The general public are not eligible for members-only discounts. However, there may be other discounts for which they may qualify e.g. on special occasions. Furthermore, they are also not eligible to become members.
Store Keepers
User names and passwords of all store keepers are stored in a file called StoreKeepers.txt
2.3 Functional Requirements
2.3.1 Payments during checkout
During checkout, the system will request for payment to be affected. The system will display an itemised list of charges, with a total, and will prompt the store keeper to enter the amount tendered and/or points to be redeemed (see the section on “Discounts, offers and loyalty points” below). If points are redeemed during checkout, the Members data file will be updated to reflect the latest points remaining. Customers can pay using their loyalty points as well as cash or a combination of these for a single transaction.
The store keeper receives the payment and enters the payment amount and/or the number of points to redeem. The total tendered, cash as well as dollar-equivalent of the loyalty points, cannot be less than the total amount. At this point, the store keeper may decide to cancel the payment by selecting the “Cancel” option.
If a valid amount is tendered, using a combination of cash and/or loyalty points, the system will compute the change to be returned and print a receipt using the receipt printer.
Should the quantities of any product purchased by the customer result in the inventory levels falling below a specified threshold (reorder level), an alert message is automatically printed for the store keeper indicating which products are affected and the present quantities in the inventory. Note that this message is not printed on the customer’s receipt and is strictly for the store keeper only. The reorder levels are specified in the Products data file.
Discounts, offers and loyalty points
Discounts may be offered to new members when they make their first purchase, say, 20%. The discount amount should be configurable. For subsequent purchases, members are entitled to a members-only discount of, say, 10% (also configurable).
The store will also offer discounts on special occasions such as Centenary Celebration, University President’s birthday, National Day and Orientation Day, which all customers are eligible to enjoy, not just members. The store may offer different discounts for different occasions. Note that discounts are not cumulative (e.g. 10% + 5% = 15%) – only one discount can be offered at any given time; the highest of the offered discounts will apply.
Furthermore, members may accumulate loyalty points (stored in the Members data file) and redeem the points after accumulating sufficient points. The dollar-to-point value (e.g. $10 spent = 1 additional point) and the points-to-dollar redemption value (e.g. 100 redeemed points = $5 worth) can be hard-coded if you so wish.
Check and replenish inventory
The store keeper should be able to generate a list of products with inventory quantities below a specific threshold. The threshold for each product is configured in the Products data file. The store keeper should be given an option to generate a purchase order for all items below their thresholds.
2.3.2 Member Registration
The new member fills out a (paper) membership application including their name and student/staff card number. The clerk requests the computer system to display the “New member” screen and enters the form information.
The system then
3) The system then
The system must be able to print out to the screen some simple reports; in these reports, each record should be displayed as a brief one-liner. The following reports must be provided:
All data files are currently text-based, so that all values are stored as strings rather than binary data. Each file contains a sequence of records of the same type.
2.4.1 Categories
Categories are stored in the file Category.txt.
Each line comprises comma-separated fields described as follows:
Field 1 – Three letter code of category
Field 2 – Name of category
The following is a sample Category.txt file:
CLO,Clothing
MUG,Mugs
STA,Stationary
DIA,Diary
Your category data file should contain no less than 5 categories in total.
2.4.2 Members
Members are stored in the file Members.txt.
Each line comprises comma-separated fields described as follows:
Field 1 – Name of member
Field 2 – Member id
Field 3 – Loyalty points accumulated so far (-1 indicates a new member)
The following is a sample Members.txt file:
Yan Martel,F42563743156,150
Suraj Sharma,X437F356,250
Ang Lee,R64565FG4,-1
Your member data file should contain no less than 10 members in total.
2.4.3 Products
Each line comprises comma-separated fields described as follows:
The format for each record is:
Field 1 – Product id
Field 2 – Name of product
Field 3 – Brief description
Field 4 – Quantity available
Field 5 – Price
Field 6 – Bar code number
Field 7 – Reorder Quantity (threshold)
Field 8 – Order Quantity (when inventory below reorder level)
The following is a sample Products.txt file:
CLO/1,Centenary Jumper,A really nice momento,315,21.45,1234,10,100
MUG/1,Centenary Mug,A really nice mug this time,525,10.25,9876,25,150
STA/1,VIT Pen,A really cute blue pen,768,5.75,123459876,50,250
STA/2,VIT Notepad,Great notepad for those lectures,1000,3.15,6789,25,75
Your product data file should contain no less than 10 products in total.
2.4.5 Transactions
Each line comprises comma-separated fields described as follows:
The format for each record is:
Field 1 – Transaction id (a monotonically increasing number)
Field 2 – Product id
Field 3 – Member id or “PUBLIC” for non-member
Field 4 – Quantity purchased
Field 5 – Date
The following is a sample Transactions.txt file:
1,CLO/1,F42563743156,2,2013-09-28
1,MUG/1,F42563743156,3,2012-09-28
2,STA/1,PUBLIC,1,2013-09-29
3,STA/2,R64565FG4,2,2013-09-30
2.4.6 Discounts and offers
Each line comprises comma-separated fields described as follows:
The format for each record is:
Field 1 – Discount code
Field 2 – Description
Field 3 – Start date (where applicable or “ALWAYS”)
Field 4 – Period of discount in days (where applicable or “ALWAYS”)
Field 5 – Percentage discount without the percentage symbol e.g. “10” for 10% discount
Field 6 – Applicable to Member (M) or All (A)
The following is a sample Discounts.txt file:
MEMBER_FIRST,First purchase by member,ALWAYS,ALWAYS,20,M
MEMBER_SUBSEQ,Subsequent purchase by member,ALWAYS,ALWAYS,10,M
CENTENARY,Centenary Celebration in 2014,2014-01-01,365,15,A
PRESIDENT_BDAY,University President’s birthday,2014-02-01,7,20,A
ORIENTATION_DAY,Orientation Day,2014-02-02,3,50,A
Your discounts data file should contain no less than 5 discounts in total
2.4.7 Vendors
Vendor list for each category of products will be kept in a separate file. A vendor may supply many categories of products. The entries for each vendor appear in the order of preference in the file. Each line comprises comma-separated fields described as follows:
The format for each record is:
Field 1 – Vendor Name
Field 2 – Description
The following is a sample VendorsMUG.txt file:
Nancy’s Gifts,Best of the best gifts from Nancy’s
Office Sovenirs,One and only Office Sovenirs
Pen’s and Such,Sovenirs and gifts for all occasions
ArtWorks Stationary Store,All kinds of Stationary and Gifts
Each Vendor data file should contain no less than 3 vendors in total.
2.4.8 Storekeepers
For this version, you do not need to store encrypted passwords.
Field 1 – Storekeeper’s Name
Field 2 – Storekeeper’s Password
2.4.9 Sample file
The following is a sample Storekeepers.txt file:
Stacy,Dean56s
Johny,A12ysd45
Your Storekeepers data file should contain no less than 2 Storekeepers in total.
Note, this file can be found
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