This is the method I wrote for exception

@ExceptionHandler(value = HttpRequestMethodNotSupportedException.class)
@ResponseStatus(HttpStatus.METHOD_NOT_ALLOWED)
public @ResponseBody ErrorResponse handleRequestMethodNotSupportedException(HttpRequestMethodNotSupportedException ex){
return new ErrorResponse(HttpStatus.METHOD_NOT_ALLOWED.value(), ex.getMessage());
}

Now I am not able to figure out where and how to throw this exception?

@GetMapping
public ResponseEntity<List> getAllSuppliers() throws HttpRequestMethodNotSupportedException {
return new ResponseEntity<>(service.getAllSuppliers(), HttpStatus.OK);
}

this is my get method in controller so in postman if instead of get if I send post request then 405 error will be shown so how can I handle this. I tried using throws exception in method signature but it is not working