Fix: Checkstyle

Signed-off-by: anaconda875 <hflbtmax@gmail.com>

Author: anaconda875

spring-core/src/main/java/org/springframework/core/ResolvableType.java

@@ -688,7 +688,7 @@ private boolean isWildcardWithoutBounds() {
 
 	/**
 	 * Determine whether the underlying type represents a wildcard
-	 * has unresolvable upper bound or lower bound
+	 * has unresolvable upper bound or lower bound.
 	 */
 	private boolean isUnresolvableWildcard(Set<Type> alreadySeen) {
 		if (this.type instanceof WildcardType wildcardType) {
@@ -1221,10 +1221,10 @@ public static ResolvableType forWildCardTypeWithUpperBound(WildcardType wildcard
 				() -> "The WildcardType has lower bound while upper bound provided " + wildcardType);
 
 		Type upperBoundType = upperBound.getType();
-		VariableResolver variableResolver = upperBoundType instanceof TypeVariable<?> typeVariable
-				? new TypeVariablesVariableResolver(
-						new TypeVariable<?>[]{typeVariable}, new ResolvableType[]{upperBound})
-				: null;
+		VariableResolver variableResolver = upperBoundType instanceof TypeVariable<?> typeVariable ?
+				new TypeVariablesVariableResolver(
+						new TypeVariable<?>[]{typeVariable}, new ResolvableType[]{upperBound}) :
+				null;
 
 		return forType(new WildcardTypeImpl(new Type[]{upperBoundType}, EMPTY_TYPE_ARRAY), variableResolver);
 	}
@@ -1244,10 +1244,10 @@ public static ResolvableType forWildCardTypeWithLowerBound(WildcardType wildcard
 						.formatted(originalUpperBound[0], wildcardType));
 
 		Type lowerBoundType = lowerBound.getType();
-		VariableResolver variableResolver = lowerBoundType instanceof TypeVariable<?> typeVariable
-				? new TypeVariablesVariableResolver(
-						new TypeVariable<?>[]{typeVariable}, new ResolvableType[]{lowerBound})
-				: null;
+		VariableResolver variableResolver = lowerBoundType instanceof TypeVariable<?> typeVariable ?
+				new TypeVariablesVariableResolver(
+						new TypeVariable<?>[]{typeVariable}, new ResolvableType[]{lowerBound}) :
+				null;
 
 		return forType(new WildcardTypeImpl(new Type[]{Object.class}, new Type[]{lowerBoundType}), variableResolver);
 	}
@@ -1695,9 +1695,10 @@ public Object getSource() {
 	}
 
 
-	private static final class WildcardTypeImpl	implements WildcardType, Serializable {
+	private static final class WildcardTypeImpl implements WildcardType, Serializable {
 
 		private final Type[] upperBound;
+
 		private final Type[] lowerBound;
 
 		private WildcardTypeImpl(Type[] upperBound, Type[] lowerBound) {
@@ -1707,20 +1708,21 @@ private WildcardTypeImpl(Type[] upperBound, Type[] lowerBound) {
 
 		@Override
 		public Type[] getUpperBounds() {
-			return upperBound.clone();
+			return this.upperBound.clone();
 		}
 
 		@Override
 		public Type[] getLowerBounds() {
-			return lowerBound.clone();
+			return this.lowerBound.clone();
 		}
 
 		@Override
 		public boolean equals(Object o) {
 			if (!(o instanceof WildcardType that)) {
 				return false;
 			}
-			return Arrays.equals(upperBound, that.getUpperBounds()) && Arrays.equals(lowerBound, that.getLowerBounds());
+			return Arrays.equals(this.upperBound, that.getUpperBounds()) &&
+					Arrays.equals(this.lowerBound, that.getLowerBounds());
 		}
 
 		@Override