COIT11134 Object-Oriented Programming Assignment Sample

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Introduction to Object-Oriented Programming

The task was to develop a Java console application for managing student placements at a University, applying the principles of Object-Oriented Programming to ensure modularity, reusability, and maintainability of the code. The application required creating a Java_cli class for handling student data and a StudentManager class for user interactions and managing student records. To enhance accuracy and reliability, the project incorporated input validation and a menu-driven interface to enter and view student details, ensuring all criteria for student eligibility were met. This work, which can also serve as a practical example for learners and services like Assignment Help UK, is documented here to showcase the development process, time management, challenges faced, and overall conclusions drawn from the project.

COIT11134 Object-Oriented Programming Assignment Sample

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Chris Walker 5 Years | PhD

Timespan

The project was completed over a week. The initial two days were dedicated to designing the class structure and planning the application workflow. The subsequent days were spent implementing the “Java_cli class” with input validation and the “StudentManager class” with menu functionality. Debugging and testing occupied the final days to ensure the application functioned correctly. Throughout the week, time was also allocated for refining code, addressing unforeseen issues, and making improvements based on testing outcomes.

Problems Faced

Several challenges arose during development. Implementing effective looping for menu navigation required careful handling to ensure users could repeatedly interact with the menu without errors. Managing the ArrayList for storing student records was initially tricky, particularly when checking for duplicate student IDs. Additionally, connecting and integrating the two Java files within the same package posed challenges, particularly in ensuring that the Student class was correctly utilized by the “StudentManager class”. These issues required iterative debugging and refinement to resolve.

Output of the application

When I create the `Student` class with just a default constructor in Java, I create the basic structure that will enable me to manage both the details of students and the details of the campus. Default constructor enables me to assign default values or if it's an application, the user is asked for name and ID for instance. This way of categorizing files makes it less time-consuming for me to show the student information and campus pertinent details to the students. Thinking over this, I can appreciate how this form of initialization makes handling data comprehensible and makes my application structured and workable.

Using getter and setter methods in the `Student` class improves my way of handling student data. With the help of getters, you can get exactly the desired parameter, for example, name or ID, setters help to change the necessary parameters if necessary. As for this approach it guarantees that data remains kept secret and owned solely by the AP party. Thinking about this, it is clear that these methods make data acquisition and alteration easier and the overall application more stable and, therefore, less complicated to work with.

Incorporating validation methods as part of `Student` class is beneficial because it is both time efficient and effective at maintaining data integrity since data is validated in order to proceed with an operation, an email format or an ID number for instance. This is a proactive way that can reduce the instances of having the wrong or inconsistent data entered into the database. Thinking about that, I find that validation methods increase the solidity of my application, protecting it from the mistakes and ensuring that the data I have on students is correct and consistent.

Start of the `Java_cli` class an establishment of a looping menu greatly aids in the use of the application. The `Java_cli` class serves as a user interface to interact within the application while the looping of the menu and their functionalities to say, get or change details of the students make it more dynamic. It also reduces the complexity of a user interface, enhances efficient management of data, and provides the best means of dealing with student related information. Thinking such, it is possible to state that it makes the application to be much more user friendly as well as functional.

This above figure shows the Java function as the read CLI mode.The function within the `Java_cli` class which will be used for reading student data. The function reads items like names, ids, and codes from the console then parses them before storing in an internal data structure. The method also deals with the management and accuracy of data and user inputs in the most proper way.

Shown here is the method that pulls and informs all the stored student records. This function is a query function that searches the internal data warehouse and returns the result in a highly presentable format on the console.

This figure shows the menu dubbed as the main menu in the console user interface of the `Java_cli` application. On the menu, it is possible to input the new student data, display all the students, and/or terminate the application.

This figure is showing how the data entry for the first student is done. The form consists of a number of input boxes where we can enter the student ID, the name of the student and the course code. This is the step that is most important, in order to record entries to the applications database.

This shows the process of data entry about a second studejnt. It will further show that having to deal with many records is not an issue, and the details of each student will be entered and stored correctly.

It shows all the students' lists, which gives an insight on how the application provides all round detailed data in a tabular form for each student.

Here, the process which is the exit from the application is described. In this figure: The user chooses the exit option of the menu, which allows the program to end, and ensure that all the changes are stored.

This system works under a 9 digit student ID input. It is utilized to check up the operational capability of the application and how it handles different IDs format as well as to check up the capacity of the input lengths.

The response of the application to an inaccurate input of a course code.

Conclusion

The project successfully achieved its goals, providing a functional Java console application for student placement management. The development process was a valuable learning experience, highlighting the importance of careful planning and testing. The challenges faced, such as looping logic and array management, offered practical insights into Java programming and debugging. Overall, the project enhanced my skills in Java development and reinforced the importance of thorough validation and effective class interaction in software design.

References

• Nguyen, T., & Le, H., 2023. "Improving ArrayList Performance in Java: A Comparative Study." International Journal of Computer Science and Software Engineering, 18(2), pp. 89-98.
• Sierra, K. & Bates, B., 2021. Head First Java. 3rd ed. O'Reilly Media.
• Zhang, Y., & Chen, J., 2022. "Effective Java Programming: Patterns and Best Practices for Java 17 and Beyond." Journal of Software Engineering and Applications, 15(4), pp. 102-115.