TRADING SYSTEM Case Solution
Overview
The trading system is created to improve the accountability, transparency, and functionality of business operations. This system will ensure confidentiality of users by assigning them separate user IDs and passwords so that they can update their records on a daily basis in order to the improve efficiency in supply chain. Different participants of supply chain can manage their account through this system. The buyers will have separate accounts in which they can make/save record of their purchases. Suppliers will also have same facility, in which they can update the record of available inventory and sold inventory.
Usage and programming
Model Description and justification:
The program consists of five classes named SignIn.java, SignUp.java, Buyer.java, Seller.java and Trading System.java. Trading System.java initiates SignIn.java from where the application starts and asks for Sign in details of user.
After the registration, the user will log in to their respective account. An interface will appear in front of them of their record. By using that interface, the buyers can buy available items at mentioned prices. In addition to this, the buyers can also check history of their purchasing items. If the user is the seller then, Seller.java will initiate with their respective interface. The sellers can update their inventory availability account with the price offering. The summary of buyers feature is given below.
- Buyer buys products.
- Buyer views purchase history.
- Buyer updates his/her details.
Similarly, the seller will do his/her task. We have used only one class for buyer and seller because we have used multiple panels each one of the class. In the buyer’s section, we have used panel for each action buyer performs details will be given below in output section. In the output section, we will go in details of how we have managed multiple panels inside one class. We have used the approach in which we do not require extra classes from the actions which the user performs.
Implementation Code:
The above image prescribes the written code used for visualizing Sign In class and extending the javax. swing. JFrame which shows the inheritance concept of java.
In the above section of code you can see the concept of association of java,which is created for the users to sign in. Later on, it will be identified whether it is the buyer’s ID or seller’s ID. After recognition, the buyer will successfully log in.
In the above piece of code, you can see the try catch statement which relates to the java concept of exception handling. We have used try catch to catch exception if the file for reading is not found or contains errors while reading the file.
In the above code, you can see the concept of object creation and method calling using object.
Interface.
1) Front look
This above picture visualizes the front interface of trading system. After clicking on application file, the user will see this interface,and the next step is to insert username and password. Afterwards, the user will be logged into their respective accounts.................
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