Q.5.1 The sports organisation has many employees working for the organisation.
Personal assistants are responsible for managing the schedules of the
administrators who recruit and manage the players. The players are responsible
for playing the matches organised for them.
Create the appropriate class diagrams that will represent the classes in the above
scenario. Indicate the appropriate relationships between the classes. Include at
least one attribute in each class as well as the relevant methods for each class.
(14)
Q.5.2 Explain the importance of implementing exception handling in the Sports
Administration application.
In the class diagram for the given scenario, following classes can be represented:
1. Sports Organisation:
Attributes: None
Methods: None
2. Personal Assistant:
Attributes: name, schedule
Methods: manageSchedule()
3. Administrator:
Attributes: name, players
Methods: recruitPlayer(), managePlayer()
4. Player:
Attributes: name, matches
Methods: playMatch()
Relationships:
- Personal Assistant is associated with Administrator through the manageSchedule() method.
- Administrator is associated with Player through the recruitPlayer() and managePlayer() methods.
The importance of implementing exception handling in the Sports Administration application is as follows:
1. Error handling: Exception handling allows for proper handling and reporting of errors or unexpected situations that may occur during the execution of the application. This helps in providing meaningful error messages to users or administrators, making it easier to identify and fix problems.
2. Application stability: By catching and handling exceptions, the application can gracefully handle errors and prevent crashes or abrupt terminations. This ensures greater stability and reliability of the application.
3. Debugging: Exception handling provides an effective way to track and debug errors in the code. When an exception is thrown, the application can log relevant information about the error, which can be used for debugging and resolving the issue.
4. User experience: Proper exception handling enhances the user experience by displaying user-friendly error messages and guiding users on how to resolve or recover from the encountered error. This improves user satisfaction and reduces frustration.
5. Security: Exception handling can help in preventing unauthorized access or malicious activities by catching and handling potential security breaches. By properly handling exceptions related to security, the application can protect sensitive data and resources.
Overall, implementing exception handling in the Sports Administration application ensures robustness, stability, better user experience, debugging ease, and enhanced security.
A.5.1:
Based on the given scenario, the following class diagram can be created:
```
+-------------------+
| Sports Org |
+-------------------+
| |
| - employees |
+-------------------+
|
+-----------------------+
| |
| Personal Assistant |
|-----------------------|
| |
| - schedules |
| - administrators |
+-----------------------+
|
+-----------------------+
| |
| Administrator |
|-----------------------|
| |
| - players |
+-----------------------+
|
+-----------------------+
| |
| Player |
|-----------------------|
| |
| - matches |
+-----------------------+
```
Explanation:
- The `Sports Org` class represents the sports organization and contains the `employees` attribute that holds the employees working for the organization.
- The `Personal Assistant` class represents a personal assistant and has the `schedules` and `administrators` attributes. The `schedules` attribute is responsible for managing the schedules of the administrators, and the `administrators` attribute refers to the administrators who recruit and manage players.
- The `Administrator` class represents an administrator and has the `players` attribute. The `players` attribute is responsible for managing the players recruited and managed by the administrator.
- The `Player` class represents a player and has the `matches` attribute. The `matches` attribute is responsible for storing the matches organized for the player.
Note: This is a basic representation of the classes and their relationships. Additional attributes and methods can be added based on the specific requirements of the system.
A.5.2:
Exception handling is important in the Sports Administration application due to the following reasons:
1. Error handling: Exception handling allows for proper handling of errors that may occur during the execution of the application. For example, if there is an error in scheduling a match or managing player data, an exception can be thrown and caught to handle the error gracefully.
2. Robustness: Exception handling improves the robustness of the application by preventing unexpected errors from crashing the application. Instead of terminating the application, exceptions can be caught and appropriate actions can be taken to handle the error and potentially recover from it.
3. Debugging: Exception handling provides a way to generate meaningful error messages and stack traces that can be useful during the debugging process. Exception messages can help identify the cause of the error and where it occurred in the code, making it easier to locate and fix bugs.
4. Recovery: Exception handling allows for graceful recovery from errors. For example, if there is an error while saving player data, an exception can be caught, and the application can prompt the user to retry or perform some other action to recover from the error.
5. Maintainability: Exception handling helps in maintaining the codebase by separating the error handling logic from the main business logic. This makes the code more readable and maintainable, as error handling code is isolated and can be modified or updated independently.
In conclusion, exception handling is crucial in the Sports Administration application as it ensures proper error handling, improves robustness, aids in debugging, allows for graceful recovery from errors, and enhances maintainability.