diff --git a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/security/reactive/EndpointRequest.java b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/security/reactive/EndpointRequest.java
index b299794feae7..a9b1204fe439 100644
--- a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/security/reactive/EndpointRequest.java
+++ b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/security/reactive/EndpointRequest.java
@@ -91,7 +91,7 @@ public static EndpointServerWebExchangeMatcher to(String... endpoints) {
 	 * The {@link ServerWebExchangeMatcher} used to match against {@link Endpoint actuator
 	 * endpoints}.
 	 */
-	public final static class EndpointServerWebExchangeMatcher
+	public static final class EndpointServerWebExchangeMatcher
 			extends ApplicationContextServerWebExchangeMatcher<EndpointPathProvider> {
 
 		private final List<Object> includes;
diff --git a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/security/servlet/EndpointRequest.java b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/security/servlet/EndpointRequest.java
index d17f60019bb0..f5c6c2191e8c 100644
--- a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/security/servlet/EndpointRequest.java
+++ b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/security/servlet/EndpointRequest.java
@@ -89,7 +89,7 @@ public static EndpointRequestMatcher to(String... endpoints) {
 	/**
 	 * The request matcher used to match against {@link Endpoint actuator endpoints}.
 	 */
-	public final static class EndpointRequestMatcher
+	public static final class EndpointRequestMatcher
 			extends ApplicationContextRequestMatcher<EndpointPathProvider> {
 
 		private final List<Object> includes;
diff --git a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/web/servlet/ServletManagementChildContextConfiguration.java b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/web/servlet/ServletManagementChildContextConfiguration.java
index e6c1d9b79f27..e60a3e3bff34 100644
--- a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/web/servlet/ServletManagementChildContextConfiguration.java
+++ b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/web/servlet/ServletManagementChildContextConfiguration.java
@@ -109,7 +109,7 @@ protected void customize(ConfigurableServletWebServerFactory webServerFactory,
 
 	}
 
-	static abstract class AccessLogCustomizer implements Ordered {
+	abstract static class AccessLogCustomizer implements Ordered {
 
 		protected String customizePrefix(String prefix) {
 			return "management_" + prefix;
diff --git a/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/scheduling/ScheduledTasksEndpoint.java b/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/scheduling/ScheduledTasksEndpoint.java
index 1bdaabec2800..0efcb075da81 100644
--- a/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/scheduling/ScheduledTasksEndpoint.java
+++ b/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/scheduling/ScheduledTasksEndpoint.java
@@ -105,7 +105,7 @@ public List<TaskDescription> getFixedRate() {
 	/**
 	 * Base class for descriptions of a {@link Task}.
 	 */
-	public static abstract class TaskDescription {
+	public abstract static class TaskDescription {
 
 		private static final Map<Class<? extends Task>, Function<Task, TaskDescription>> DESCRIBERS = new LinkedHashMap<>();
 
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/AutoConfigurationPackages.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/AutoConfigurationPackages.java
index 963af726516d..379b526c0679 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/AutoConfigurationPackages.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/AutoConfigurationPackages.java
@@ -139,7 +139,7 @@ public Set<Object> determineImports(AnnotationMetadata metadata) {
 	/**
 	 * Wrapper for a package import.
 	 */
-	private final static class PackageImport {
+	private static final class PackageImport {
 
 		private final String packageName;
 
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/RabbitProperties.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/RabbitProperties.java
index ab9fd4d1e75f..5a2f13cb6ef0 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/RabbitProperties.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/RabbitProperties.java
@@ -537,7 +537,7 @@ public DirectContainer getDirect() {
 
 	}
 
-	public static abstract class AmqpContainer {
+	public abstract static class AmqpContainer {
 
 		/**
 		 * Whether to start the container automatically on startup.
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/embedded/EmbeddedMongoAutoConfiguration.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/embedded/EmbeddedMongoAutoConfiguration.java
index b68168ec82a9..610d2515ef30 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/embedded/EmbeddedMongoAutoConfiguration.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/embedded/EmbeddedMongoAutoConfiguration.java
@@ -246,7 +246,7 @@ public EmbeddedReactiveMongoDependencyConfiguration() {
 	 * A workaround for the lack of a {@code toString} implementation on
 	 * {@code GenericFeatureAwareVersion}.
 	 */
-	private final static class ToStringFriendlyFeatureAwareVersion
+	private static final class ToStringFriendlyFeatureAwareVersion
 			implements IFeatureAwareVersion {
 
 		private final String version;
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/security/StaticResourceRequest.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/security/StaticResourceRequest.java
index ef37eb852dbf..b71c072fa8ef 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/security/StaticResourceRequest.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/security/StaticResourceRequest.java
@@ -127,7 +127,7 @@ Stream<String> getPatterns() {
 	/**
 	 * The request matcher used to match against resource {@link Location Locations}.
 	 */
-	public final static class StaticResourceRequestMatcher
+	public static final class StaticResourceRequestMatcher
 			extends ApplicationContextRequestMatcher<ServerProperties> {
 
 		private final Set<Location> locations;
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/session/SessionAutoConfiguration.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/session/SessionAutoConfiguration.java
index dbaee1bfc9ea..73462cb38a73 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/session/SessionAutoConfiguration.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/session/SessionAutoConfiguration.java
@@ -104,7 +104,7 @@ static class ReactiveSessionRepositoryConfiguration {
 	/**
 	 * {@link ImportSelector} base class to add {@link StoreType} configuration classes.
 	 */
-	static abstract class SessionConfigurationImportSelector implements ImportSelector {
+	abstract static class SessionConfigurationImportSelector implements ImportSelector {
 
 		protected final String[] selectImports(AnnotationMetadata importingClassMetadata,
 				WebApplicationType webApplicationType) {
@@ -153,7 +153,7 @@ public String[] selectImports(AnnotationMetadata importingClassMetadata) {
 	 * Base class for beans used to validate that only one supported implementation is
 	 * available in the classpath when the store-type property is not set.
 	 */
-	static abstract class AbstractSessionRepositoryImplementationValidator {
+	abstract static class AbstractSessionRepositoryImplementationValidator {
 
 		private final List<String> candidates;
 
@@ -233,7 +233,7 @@ static class ReactiveSessionRepositoryImplementationValidator
 	/**
 	 * Base class for validating that a (reactive) session repository bean exists.
 	 */
-	static abstract class AbstractSessionRepositoryValidator {
+	abstract static class AbstractSessionRepositoryValidator {
 
 		private final SessionProperties sessionProperties;
 
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/template/PathBasedTemplateAvailabilityProvider.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/template/PathBasedTemplateAvailabilityProvider.java
index 871c2e546efc..82e90f198567 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/template/PathBasedTemplateAvailabilityProvider.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/template/PathBasedTemplateAvailabilityProvider.java
@@ -74,7 +74,7 @@ private boolean isTemplateAvailable(String view, ResourceLoader resourceLoader,
 		return false;
 	}
 
-	protected static abstract class TemplateAvailabilityProperties {
+	protected abstract static class TemplateAvailabilityProperties {
 
 		private String prefix;
 
diff --git a/spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/command/init/InitializrServiceMetadata.java b/spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/command/init/InitializrServiceMetadata.java
index 123b4a51be84..6f9c5bde3c04 100644
--- a/spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/command/init/InitializrServiceMetadata.java
+++ b/spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/command/init/InitializrServiceMetadata.java
@@ -227,7 +227,7 @@ private Map<String, String> parseStringItems(JSONObject json) throws JSONExcepti
 		return result;
 	}
 
-	private final static class MetadataHolder<K, T> {
+	private static final class MetadataHolder<K, T> {
 
 		private final Map<K, T> content;
 
diff --git a/spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/livereload/Connection.java b/spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/livereload/Connection.java
index aaa13b9b62a0..e4e5391e71d9 100644
--- a/spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/livereload/Connection.java
+++ b/spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/livereload/Connection.java
@@ -43,7 +43,7 @@ class Connection {
 	private static final Pattern WEBSOCKET_KEY_PATTERN = Pattern
 			.compile("^Sec-WebSocket-Key:(.*)$", Pattern.MULTILINE);
 
-	public final static String WEBSOCKET_GUID = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
+	public static final String WEBSOCKET_GUID = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
 
 	private final Socket socket;
 
diff --git a/spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/tunnel/payload/HttpTunnelPayload.java b/spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/tunnel/payload/HttpTunnelPayload.java
index 88a53aac5815..7db077b64a97 100644
--- a/spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/tunnel/payload/HttpTunnelPayload.java
+++ b/spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/tunnel/payload/HttpTunnelPayload.java
@@ -45,7 +45,7 @@ public class HttpTunnelPayload {
 
 	private static final int BUFFER_SIZE = 1024 * 100;
 
-	final protected static char[] HEX_CHARS = "0123456789ABCDEF".toCharArray();
+	protected final static char[] HEX_CHARS = "0123456789ABCDEF".toCharArray();
 
 	private static final Log logger = LogFactory.getLog(HttpTunnelPayload.class);
 
diff --git a/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/context/FilteredClassLoader.java b/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/context/FilteredClassLoader.java
index 569696acabba..025322933e59 100644
--- a/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/context/FilteredClassLoader.java
+++ b/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/context/FilteredClassLoader.java
@@ -73,7 +73,7 @@ protected Class<?> loadClass(String name, boolean resolve)
 	/**
 	 * Filter to restrict the classes that can be loaded.
 	 */
-	public final static class ClassFilter implements Predicate<String> {
+	public static final class ClassFilter implements Predicate<String> {
 
 		private Class<?>[] hiddenClasses;
 
@@ -100,7 +100,7 @@ public static ClassFilter of(Class<?>... hiddenClasses) {
 	/**
 	 * Filter to restrict the packages that can be loaded.
 	 */
-	public final static class PackageFilter implements Predicate<String> {
+	public static final class PackageFilter implements Predicate<String> {
 
 		private final String[] hiddenPackages;
 
diff --git a/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/json/AbstractJsonMarshalTester.java b/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/json/AbstractJsonMarshalTester.java
index 2daf685fcc62..46e3ef20fc6a 100644
--- a/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/json/AbstractJsonMarshalTester.java
+++ b/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/json/AbstractJsonMarshalTester.java
@@ -354,7 +354,7 @@ protected abstract T readObject(Reader reader, ResolvableType type)
 	 *
 	 * @param <M> The marshaller type
 	 */
-	protected static abstract class FieldInitializer<M> {
+	protected abstract static class FieldInitializer<M> {
 
 		private final Class<?> testerClass;
 
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/ConfigurationWarningsApplicationContextInitializer.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/ConfigurationWarningsApplicationContextInitializer.java
index ecacf8b246f2..d0e240665f2c 100755
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/ConfigurationWarningsApplicationContextInitializer.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/ConfigurationWarningsApplicationContextInitializer.java
@@ -72,7 +72,7 @@ protected Check[] getChecks() {
 	/**
 	 * {@link BeanDefinitionRegistryPostProcessor} to report warnings.
 	 */
-	protected final static class ConfigurationWarningsPostProcessor
+	protected static final class ConfigurationWarningsPostProcessor
 			implements PriorityOrdered, BeanDefinitionRegistryPostProcessor {
 
 		private Check[] checks;
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/properties/PropertyMapper.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/properties/PropertyMapper.java
index 75c5c0254dcb..2a54a5748784 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/properties/PropertyMapper.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/properties/PropertyMapper.java
@@ -169,7 +169,7 @@ public interface SourceOperator {
 	 * A source that is in the process of being mapped.
 	 * @param <T> the source type
 	 */
-	public final static class Source<T> {
+	public static final class Source<T> {
 
 		private final Supplier<T> supplier;
 
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/origin/TextResourceOrigin.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/origin/TextResourceOrigin.java
index ee32bc361fae..7fe4a1f50f8d 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/origin/TextResourceOrigin.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/origin/TextResourceOrigin.java
@@ -94,7 +94,7 @@ public String toString() {
 	/**
 	 * A location (line and column number) within the resource.
 	 */
-	public final static class Location {
+	public static final class Location {
 
 		private final int line;
 
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/client/RestTemplateBuilder.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/client/RestTemplateBuilder.java
index c32a74409da9..8e39f3434991 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/client/RestTemplateBuilder.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/client/RestTemplateBuilder.java
@@ -630,7 +630,7 @@ private interface RequestFactoryCustomizer {
 	/**
 	 * {@link RequestFactoryCustomizer} to call a "set timeout" method.
 	 */
-	private static abstract class TimeoutRequestFactoryCustomizer
+	private abstract static class TimeoutRequestFactoryCustomizer
 			implements RequestFactoryCustomizer {
 
 		private final int timeout;
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/undertow/UndertowServletWebServer.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/undertow/UndertowServletWebServer.java
index 847ede37c57e..d86d8bff39f7 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/undertow/UndertowServletWebServer.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/undertow/UndertowServletWebServer.java
@@ -321,7 +321,7 @@ public int getPort() {
 	/**
 	 * An active Undertow port.
 	 */
-	private final static class Port {
+	private static final class Port {
 
 		private final int number;
 
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/undertow/UndertowWebServer.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/undertow/UndertowWebServer.java
index b8b22dd89e78..cff2575a8493 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/undertow/UndertowWebServer.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/undertow/UndertowWebServer.java
@@ -233,7 +233,7 @@ public int getPort() {
 	/**
 	 * An active Undertow port.
 	 */
-	private final static class Port {
+	private static final class Port {
 
 		private final int number;
 
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/yaml/SpringProfileDocumentMatcher.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/yaml/SpringProfileDocumentMatcher.java
index 5a5aa380f119..87410219a4cd 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/yaml/SpringProfileDocumentMatcher.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/yaml/SpringProfileDocumentMatcher.java
@@ -124,7 +124,7 @@ enum ProfileType {
 	/**
 	 * Base class for profile matchers.
 	 */
-	private static abstract class ProfilesMatcher {
+	private abstract static class ProfilesMatcher {
 
 		public final MatchStatus matches(Set<String> profiles) {
 			if (CollectionUtils.isEmpty(profiles)) {