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What is the main purpose of using @ExceptionHandler in a Spring Boot controller?

easy📝 Conceptual Q11 of 15
Spring Boot - Exception Handling
What is the main purpose of using @ExceptionHandler in a Spring Boot controller?
ATo catch and handle exceptions thrown in controller methods
BTo define the URL path for a controller method
CTo inject dependencies into the controller
DTo configure database connections
Step-by-Step Solution
Solution:

  1. Step 1: Understand the role of @ExceptionHandler

    @ExceptionHandler is used to catch exceptions that occur in controller methods to prevent the app from crashing.

  2. Step 2: Identify what @ExceptionHandler does in controllers

    It allows sending user-friendly error messages and proper HTTP status codes when exceptions happen.

  3. Final Answer:

    To catch and handle exceptions thrown in controller methods -> Option A

  4. Quick Check:

    @ExceptionHandler catches exceptions [OK]
Quick Trick: Remember: @ExceptionHandler handles errors in controllers [OK]
Common Mistakes:
  • Confusing @ExceptionHandler with URL mapping annotations
  • Thinking it injects dependencies
  • Assuming it configures database settings

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