diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/jackson/JsonComponentModule.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/jackson/JsonComponentModule.java
index e1c45ae890..dac8c4aaf4 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/jackson/JsonComponentModule.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/jackson/JsonComponentModule.java
@@ -178,11 +178,11 @@ public class JsonComponentModule extends SimpleModule implements BeanFactoryAwar
 
 	}
 
-	private static class JsonComponentAotContribution implements BeanFactoryInitializationAotContribution {
+	private static final class JsonComponentAotContribution implements BeanFactoryInitializationAotContribution {
 
 		private final Map<Class<?>, List<Class<?>>> innerComponents;
 
-		public JsonComponentAotContribution(Map<Class<?>, List<Class<?>>> innerComponents) {
+		private JsonComponentAotContribution(Map<Class<?>, List<Class<?>>> innerComponents) {
 			this.innerComponents = innerComponents;
 		}
 
diff --git a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/jackson/JsonComponentModuleTests.java b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/jackson/JsonComponentModuleTests.java
index 8822989cc4..f0dcb59815 100644
--- a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/jackson/JsonComponentModuleTests.java
+++ b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/jackson/JsonComponentModuleTests.java
@@ -191,7 +191,7 @@ class JsonComponentModuleTests {
 	private void assertKeyDeserialize(Module module) throws IOException {
 		ObjectMapper mapper = new ObjectMapper();
 		mapper.registerModule(module);
-		TypeReference<Map<NameAndAge, Boolean>> typeRef = new TypeReference<Map<NameAndAge, Boolean>>() {
+		TypeReference<Map<NameAndAge, Boolean>> typeRef = new TypeReference<>() {
 		};
 		Map<NameAndAge, Boolean> map = mapper.readValue("{\"spring is 100\":  true}", typeRef);
 		assertThat(map).containsEntry(new NameAndAge("spring", 100), true);
@@ -210,7 +210,7 @@ class JsonComponentModuleTests {
 	@JsonComponent
 	static class ComponentWithInnerAbstractClass {
 
-		static abstract class AbstractSerializer extends NameAndAgeJsonComponent.Serializer {
+		abstract static class AbstractSerializer extends NameAndAgeJsonComponent.Serializer {
 
 		}