Polish contribution

See gh-29994

spring-context/src/main/java/org/springframework/validation/ValidationUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

spring-messaging/src/main/java/org/springframework/messaging/handler/annotation/reactive/PayloadMethodArgumentResolver.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -290,7 +290,7 @@ public class PayloadMethodArgumentResolver implements HandlerMethodArgumentResol
 			Validated validatedAnn = AnnotationUtils.getAnnotation(ann, Validated.class);
 			if (validatedAnn != null || ann.annotationType().getSimpleName().startsWith("Valid")) {
 				Object hints = (validatedAnn != null ? validatedAnn.value() : AnnotationUtils.getValue(ann));
-				Object[] validationHints = (hints instanceof Object[] objectHint ? objectHint : new Object[] {hints});
+				Object[] validationHints = (hints instanceof Object[] objectHints ? objectHints : new Object[] {hints});
 				String name = Conventions.getVariableNameForParameter(parameter);
 				return target -> {
 					BeanPropertyBindingResult bindingResult = new BeanPropertyBindingResult(target, name);

spring-messaging/src/main/java/org/springframework/messaging/handler/annotation/support/PayloadMethodArgumentResolver.java

@@ -172,8 +172,8 @@ public class PayloadMethodArgumentResolver implements HandlerMethodArgumentResol
 		else if (payload instanceof byte[] bytes) {
 			return bytes.length == 0;
 		}
-		else if (payload instanceof String s) {
-			return !StringUtils.hasText(s);
+		else if (payload instanceof String text) {
+			return !StringUtils.hasText(text);
 		}
 		else if (payload instanceof Optional<?> optional) {
 			return optional.isEmpty();
@@ -216,7 +216,7 @@ public class PayloadMethodArgumentResolver implements HandlerMethodArgumentResol
 			Validated validatedAnn = AnnotationUtils.getAnnotation(ann, Validated.class);
 			if (validatedAnn != null || ann.annotationType().getSimpleName().startsWith("Valid")) {
 				Object hints = (validatedAnn != null ? validatedAnn.value() : AnnotationUtils.getValue(ann));
-				Object[] validationHints = (hints instanceof Object[] objectHint ? objectHint : new Object[] {hints});
+				Object[] validationHints = (hints instanceof Object[] objectHints ? objectHints : new Object[] {hints});
 				BeanPropertyBindingResult bindingResult =
 						new BeanPropertyBindingResult(target, getParameterName(parameter));
 				if (!ObjectUtils.isEmpty(validationHints) && this.validator instanceof SmartValidator sv) {