CIS355A Week 4 Lab: Processing Arrays Of Objects Objectives

Cis355a Week 4 Labprocessing Arrays Of Objectsobjectives Create A Gu

Create a GUI that uses JList and JTabbedPanes. Process multiple objects in an ArrayList. Code event handlers for multiple events. Develop a Stock class to manage stock activity with appropriate constructors, getters, and setters, including a method to calculate profit or loss. Implement a GUI with two tabs: one to display stocks and their details, and another to add stocks, with functionalities to remove stocks, display selected stock information, and handle invalid user inputs with error messages. Save all Java files following the specified naming conventions.

Paper For Above instruction

The development of a stock portfolio management system using Java GUI components demonstrates integration of object-oriented programming principles with user interface design. In this project, the core objective is to enable users to input, view, and manage a list of stock investments efficiently. The implementation involves creating a Stock class, which encapsulates pertinent stock data, and a GUI that interacts seamlessly with this class, providing functionalities such as adding new stocks, removing existing ones, and displaying real-time profit or loss calculations.

At the heart of this system lies the Stock class, an essential component that manages individual stock data. This class includes private instance variables for company name, number of shares, purchase price, and current price, all vital for accurate portfolio tracking. Constructor methods—both default and parameterized—allow flexible object instantiation. Setters and getters provide controlled access to these variables, adhering to encapsulation principles. A specialized getProfitLoss() method computes the financial gain or loss, calculated as the product of the number of shares and the difference between current and purchase prices. Additionally, the toString() method provides a user-friendly string representation of each stock, primarily displaying the company name, which aids in listing stocks in the GUI.

The GUI design uses Java Swing components, focusing on JTabbedPane to organize the interface into two functional tabs. The first tab, "Show stocks," features a JList showing all the stock objects added to an ArrayList, which dynamically updates as stocks are added or removed. Selecting an item from the list triggers an event that displays the corresponding profit or loss value, facilitating quick assessment of investment performance. A remove button allows users to delete selected stocks, with error handling to manage cases where no selection is made, using JOptionPane for alert messages. The second tab, "Add stock," includes text fields and labels for inputting stock details, alongside an "Add" button to insert new Stock objects into the list. Proper input validation ensures all required data are entered, with error messages for incorrect or incomplete inputs.

The program emphasizes comprehensive event handling—responding to list selections, button clicks, and input validation—to create a responsive user experience. When stocks are added, they appear in the list immediately, and the interface updates to reflect current portfolio status. Removing stocks updates the list accordingly. The system's modular design, emphasizing separation of concerns, enhances maintainability and scalability. Proper code documentation, including header comments and meaningful variable names, supports code readability and adheres to best programming practices.

In addition to core functionality, the program demonstrates adherence to coding standards, including proper indentation, appropriate commenting, and meaningful naming conventions for variables and methods. These practices not only improve code clarity but also facilitate debugging and future enhancements. Overall, this project encapsulates fundamental concepts of Java programming, GUI development, event-driven programming, and object-oriented design, providing a comprehensive learning experience for managing complex data structures in a user-friendly manner.

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