You want to handle IllegalStateException globally for all controllers in your Spring Boot app. Which is the best way to do this?

hard📝 Conceptual Q8 of 15

Spring Boot - Exception Handling

You want to handle IllegalStateException globally for all controllers in your Spring Boot app. Which is the best way to do this?

AUse @RestController on all controllers and add @ExceptionHandler in one controller.

BAdd @ExceptionHandler(IllegalStateException.class) methods in every controller.

CCreate a class annotated with @ControllerAdvice and add a method with @ExceptionHandler(IllegalStateException.class).

DConfigure exception handling in application.properties.

Step-by-Step Solution

Solution:

Step 1: Understand global exception handling
@ControllerAdvice allows defining exception handlers that apply to all controllers.
Step 2: Use @ExceptionHandler inside @ControllerAdvice
Defining a method with @ExceptionHandler inside a @ControllerAdvice class handles exceptions globally.
Final Answer:
Create a class annotated with @ControllerAdvice and add a method with @ExceptionHandler(IllegalStateException.class). -> Option C
Quick Check:
Use @ControllerAdvice + @ExceptionHandler for global handling [OK]

Quick Trick: Use @ControllerAdvice for global exception handling [OK]

Common Mistakes:

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