diff --git a/core/spring-boot/src/main/java/org/springframework/boot/context/properties/PropertyMapper.java b/core/spring-boot/src/main/java/org/springframework/boot/context/properties/PropertyMapper.java
index 222eae45cc7..bf1430e8b63 100644
--- a/core/spring-boot/src/main/java/org/springframework/boot/context/properties/PropertyMapper.java
+++ b/core/spring-boot/src/main/java/org/springframework/boot/context/properties/PropertyMapper.java
@@ -430,7 +430,7 @@ public final class PropertyMapper {
 			 * @param consumer the consumer that should accept the value if it's not been
 			 * filtered
 			 */
-			public void to(Consumer<@Nullable ? super T> consumer) {
+			public void to(Consumer<? super @Nullable T> consumer) {
 				Assert.notNull(consumer, "'consumer' must not be null");
 				T value = getValue();
 				if (value == null || test(value)) {
diff --git a/module/spring-boot-jpa/src/main/java/org/springframework/boot/jpa/EntityManagerFactoryBuilder.java b/module/spring-boot-jpa/src/main/java/org/springframework/boot/jpa/EntityManagerFactoryBuilder.java
index 4d241563f62..7501d765773 100644
--- a/module/spring-boot-jpa/src/main/java/org/springframework/boot/jpa/EntityManagerFactoryBuilder.java
+++ b/module/spring-boot-jpa/src/main/java/org/springframework/boot/jpa/EntityManagerFactoryBuilder.java
@@ -74,7 +74,7 @@ public class EntityManagerFactoryBuilder {
 
 	private @Nullable List<PersistenceUnitPostProcessor> persistenceUnitPostProcessors;
 
-	private @Nullable Supplier<@Nullable ? extends RuntimeException> requireBootstrapExecutorExceptionSupplier;
+	private @Nullable Supplier<? extends @Nullable RuntimeException> requireBootstrapExecutorExceptionSupplier;
 
 	/**
 	 * Create a new instance passing in the common pieces that will be shared if multiple
@@ -186,7 +186,7 @@ public class EntityManagerFactoryBuilder {
 	 * @param exceptionSupplier a supplier providing the exception to throw
 	 * @since 4.1.0
 	 */
-	public void requireBootstrapExecutor(Supplier<@Nullable ? extends RuntimeException> exceptionSupplier) {
+	public void requireBootstrapExecutor(Supplier<? extends @Nullable RuntimeException> exceptionSupplier) {
 		Assert.notNull(exceptionSupplier, "'exceptionSupplier' must not be null");
 		this.requireBootstrapExecutorExceptionSupplier = exceptionSupplier;
 	}
@@ -368,7 +368,7 @@ public class EntityManagerFactoryBuilder {
 				return EntityManagerFactoryBuilder.this.bootstrapExecutor;
 			}
 			if (EntityManagerFactoryBuilder.this.requireBootstrapExecutorExceptionSupplier != null) {
-				@Nullable AsyncTaskExecutor fallback = EntityManagerFactoryBuilder.this.fallbackBootstrapExecutor.get();
+				AsyncTaskExecutor fallback = EntityManagerFactoryBuilder.this.fallbackBootstrapExecutor.get();
 				if (fallback != null) {
 					return fallback;
 				}
diff --git a/module/spring-boot-webflux/src/main/java/org/springframework/boot/webflux/actuate/endpoint/web/AbstractWebFluxEndpointHandlerMapping.java b/module/spring-boot-webflux/src/main/java/org/springframework/boot/webflux/actuate/endpoint/web/AbstractWebFluxEndpointHandlerMapping.java
index 72bd7471a0b..5460b40eb4e 100644
--- a/module/spring-boot-webflux/src/main/java/org/springframework/boot/webflux/actuate/endpoint/web/AbstractWebFluxEndpointHandlerMapping.java
+++ b/module/spring-boot-webflux/src/main/java/org/springframework/boot/webflux/actuate/endpoint/web/AbstractWebFluxEndpointHandlerMapping.java
@@ -416,7 +416,7 @@ public abstract class AbstractWebFluxEndpointHandlerMapping extends RequestMappi
 		}
 
 		private @Nullable Publisher<?> invoke(InvocationContext invocationContext) {
-			return (@Nullable Publisher<?>) this.invoker.invoke(invocationContext);
+			return (Publisher<?>) this.invoker.invoke(invocationContext);
 		}
 
 		private Map<String, Object> getArguments(ServerWebExchange exchange, @Nullable Map<String, String> body) {