Spring Boot - Exception Handling
Which of the following is the correct syntax to declare a simple custom exception class named InvalidInputException?
Which of the following is the correct syntax to declare a simple custom exception class named InvalidInputException?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Check class declaration syntax
Custom exceptions are classes extending a superclass, using 'extends' keyword.Step 2: Validate correct superclass and syntax
RuntimeException is correct superclass for unchecked exceptions; class must be public if used widely.Final Answer:
public class InvalidInputException extends RuntimeException {} -> Option BQuick Check:
Correct class declaration extends RuntimeException [OK]
Quick Trick: Use 'extends RuntimeException' to declare unchecked custom exceptions [OK]
Common Mistakes:
- Using 'implements' instead of 'extends'
- Missing 'public' keyword when needed
- Extending Error instead of RuntimeException
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