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Remove or replace the header "Is Not Doc Title Name: Date: Class: IT2249" and any related instructions that pertain to submitting project files, screenshots, explanations, and project schedule development. The core assignment involves debugging and fixing a Java console application that uses 2-dimensional arrays for course registration, ensuring it compiles, runs, and adheres to specified business rules. The assignment includes unzipping a project, correcting bugs, testing with given data, documenting test results, and explaining the approach taken.

Paper For Above instruction

The primary goal of this assignment is to debug, correct, and understand a Java console application designed for student course registration using 2-dimensional arrays. The application currently contains several bugs that prevent proper compilation and execution, and the objective is to identify and fix these issues so that the program functions according to specified business rules and requirements.

Initially, the project is provided in a zipped NetBeans format. After unzipping and loading it into the NetBeans IDE or similar Java environment, the first step is to compile the code and execute it to observe its behavior. As part of this process, there are three specific test cases involving course codes IT4079, IT1006, and IT2230. Running the program with these inputs allows the developer to verify whether the registration process is functioning correctly, displaying appropriate success or failure messages, and updating the list of registered courses accordingly.

The core aspect of debugging involves scrutinizing the source code to locate logical, syntactical, or runtime errors. Common errors in such applications include array index out-of-bounds exceptions, incorrect condition checks, improper handling of user input, and faulty logic that violates business rules such as multiple registration for the same course or exceeding credit limits. In this case, since the application uses a two-dimensional array 'courses' and a separate array for 'validChoices,' a careful review is needed to ensure associations are correct and array accesses are within bounds.

One significant bug likely pertains to the validation logic — for example, the condition that checks whether a course has already been registered appears flawed. The code snippet attempts to compare the string representation of the choice with stored selections in 'validChoices,' but mistakes such as comparing against empty strings or incorrect indexing may cause incorrect validation outcomes. Fixes involve correcting the condition checks, ensuring that registration states are correctly recorded and compared.

Another common issue involves array indices — for example, in the 'WriteCurrentRegistration' method, the code assumes certain indices exist and may cause index out-of-range errors. Proper handling involves verifying that these indices are within array bounds before accessing and formatting the output string that displays registered courses.

Adjustments to the 'ValidateChoice' method are crucial. For instance, the code currently compares choice integers as strings with 'validChoices' entries but may not account for correct registration status. Also, the method should correctly handle the case where the maximum of three courses is registered, along with total credit summation and resource constraints. Fixing these logic errors ensures that the registration process is accurate and aligns with the business rules: no duplicate course registration, within credit limits, and only valid course codes are accepted.

After fixing these bugs, thorough testing with the specified course codes confirms that the application now properly validates course selection, updates registration lists dynamically, and informs the user accordingly of successful or failed registration attempts. Screenshots of these test runs provide visual evidence of correct functionality and adherence to assignment requirements.

In addition to debugging, the approach documentation explains how key Java constructs—such as arrays, loops, conditional statements, and input handling—are utilized to implement registration logic. Decisions about data structure choices, input validation, and output formatting are justified based on program requirements and Java best practices. These explanations serve as an essential part of the submission, demonstrating understanding of both the code and programming principles.

In conclusion, this assignment emphasizes debugging skills, understanding array manipulations, and implementing business rules accurately in Java. The final product is a corrected, robust application that facilitates course registration in accordance with project specifications, demonstrating proficiency in Java programming, algorithm debugging, and program testing.

References

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• Java SE Documentation. (2023). Oracle Corporation. https://docs.oracle.com/javase/8/docs/