[Solved] What will be the response body when a NullPointerException is thrown and handled by... What will be the response body when a NullPointerException is thrown and handled by this @ControllerAdvice? | Spring Boot

Spring Boot - Exception Handling

What will be the response body when a NullPointerException is thrown and handled by this @ControllerAdvice?

@ControllerAdvice
public class GlobalHandler {
  @ExceptionHandler(NullPointerException.class)
  public ResponseEntity handleNull(NullPointerException ex) {
    return ResponseEntity.status(HttpStatus.BAD_REQUEST).body("Null value error");
  }
}

A"Internal server error"

B"Null value error"

C"Resource not found"

D"Success"

Step-by-Step Solution

Solution:

Step 1: Identify exception and handler response
The handler returns a ResponseEntity with body "Null value error" for NullPointerException.
Step 2: Confirm response body content
The response body is exactly "Null value error" as per the method.
Final Answer:
"Null value error" -> Option B
Quick Check:
Response body matches handler return = "Null value error" [OK]

Quick Trick: Response body matches handler's return string [OK]

Common Mistakes:

Assuming generic error message
Confusing with other exception messages
Ignoring handler's body content

Master "Exception Handling" in Spring Boot

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Perf

More Spring Boot Quizzes

What will be the response body when a NullPointerException is thrown and handled by this @ControllerAdvice?

Step 1: Identify exception and handler response

Step 2: Confirm response body content

Final Answer:

Quick Check:

Want More Practice?