Understanding Exceptions
Definition
Exceptions
Unusual or unexpected events that disrupt the normal flow of a program.
Exceptions can help with:
- Input validation: Ensuring data is in the correct format and within acceptable ranges.
- Resource availability: Checking if files, databases, or network connections are accessible.
- Logical errors: Handling cases where the logic does not cover all possibilities.
The term "exception" in this context refers to cases that deviate from the general rule, not just runtime errors.
Why Exceptions Matter
- Robustness: Handling exceptions ensures that programs can gracefully recover from unexpected situations.
- Reliability: Anticipating exceptions reduces the likelihood of crashes or incorrect results.
- User Experience: Clear error messages and recovery options improve usability.
Identifying Exceptions in Problem Solutions
Tip- When designing a solution, always ask: "What could go wrong?"
- This mindset helps identify potential exceptions early.
- Analyse the problem: Break down the problem into smaller components and identify potential failure points.
