Use uppercase for classpath-related static final field names

Closes gh-35525

spring-aop/src/main/java/org/springframework/aop/aspectj/annotation/AspectJAdvisorBeanRegistrationAotProcessor.java

@@ -39,13 +39,13 @@ class AspectJAdvisorBeanRegistrationAotProcessor implements BeanRegistrationAotP
 
 	private static final String AJC_MAGIC = "ajc$";
 
-	private static final boolean aspectjPresent = ClassUtils.isPresent("org.aspectj.lang.annotation.Pointcut",
+	private static final boolean ASPECTJ_PRESENT = ClassUtils.isPresent("org.aspectj.lang.annotation.Pointcut",
 			AspectJAdvisorBeanRegistrationAotProcessor.class.getClassLoader());
 
 
 	@Override
 	public @Nullable BeanRegistrationAotContribution processAheadOfTime(RegisteredBean registeredBean) {
-		if (aspectjPresent) {
+		if (ASPECTJ_PRESENT) {
 			Class<?> beanClass = registeredBean.getBeanClass();
 			if (compiledByAjc(beanClass)) {
 				return new AspectJAdvisorContribution(beanClass);

spring-aop/src/main/java/org/springframework/aop/aspectj/annotation/AspectJBeanFactoryInitializationAotProcessor.java

@@ -41,13 +41,13 @@ import org.springframework.util.ClassUtils;
  */
 class AspectJBeanFactoryInitializationAotProcessor implements BeanFactoryInitializationAotProcessor {
 
-	private static final boolean aspectJPresent = ClassUtils.isPresent("org.aspectj.lang.annotation.Pointcut",
+	private static final boolean ASPECTJ_PRESENT = ClassUtils.isPresent("org.aspectj.lang.annotation.Pointcut",
 			AspectJBeanFactoryInitializationAotProcessor.class.getClassLoader());
 
 
 	@Override
 	public @Nullable BeanFactoryInitializationAotContribution processAheadOfTime(ConfigurableListableBeanFactory beanFactory) {
-		if (aspectJPresent) {
+		if (ASPECTJ_PRESENT) {
 			return AspectDelegate.processAheadOfTime(beanFactory);
 		}
 		return null;

spring-aop/src/main/java/org/springframework/aop/framework/CglibAopProxy.java

@@ -98,7 +98,7 @@ class CglibAopProxy implements AopProxy, Serializable {
 
 	private static final String COROUTINES_FLOW_CLASS_NAME = "kotlinx.coroutines.flow.Flow";
 
-	private static final boolean coroutinesReactorPresent = ClassUtils.isPresent(
+	private static final boolean COROUTINES_REACTOR_PRESENT = ClassUtils.isPresent(
 			"kotlinx.coroutines.reactor.MonoKt", CglibAopProxy.class.getClassLoader());
 
 	private static final GeneratorStrategy undeclaredThrowableStrategy =
@@ -435,7 +435,7 @@ class CglibAopProxy implements AopProxy, Serializable {
 			throw new AopInvocationException(
 					"Null return value from advice does not match primitive return type for: " + method);
 		}
-		if (coroutinesReactorPresent && KotlinDetector.isSuspendingFunction(method)) {
+		if (COROUTINES_REACTOR_PRESENT && KotlinDetector.isSuspendingFunction(method)) {
 			return COROUTINES_FLOW_CLASS_NAME.equals(new MethodParameter(method, -1).getParameterType().getName()) ?
 					CoroutinesUtils.asFlow(returnValue) :
 					CoroutinesUtils.awaitSingleOrNull(returnValue, arguments[arguments.length - 1]);

spring-aop/src/main/java/org/springframework/aop/framework/JdkDynamicAopProxy.java

@@ -75,7 +75,7 @@ final class JdkDynamicAopProxy implements AopProxy, InvocationHandler, Serializa
 
 	private static final String COROUTINES_FLOW_CLASS_NAME = "kotlinx.coroutines.flow.Flow";
 
-	private static final boolean coroutinesReactorPresent = ClassUtils.isPresent(
+	private static final boolean COROUTINES_REACTOR_PRESENT = ClassUtils.isPresent(
 			"kotlinx.coroutines.reactor.MonoKt", JdkDynamicAopProxy.class.getClassLoader());
 
 	/** We use a static Log to avoid serialization issues. */
@@ -236,7 +236,7 @@ final class JdkDynamicAopProxy implements AopProxy, InvocationHandler, Serializa
 				throw new AopInvocationException(
 						"Null return value from advice does not match primitive return type for: " + method);
 			}
-			if (coroutinesReactorPresent && KotlinDetector.isSuspendingFunction(method)) {
+			if (COROUTINES_REACTOR_PRESENT && KotlinDetector.isSuspendingFunction(method)) {
 				return COROUTINES_FLOW_CLASS_NAME.equals(new MethodParameter(method, -1).getParameterType().getName()) ?
 						CoroutinesUtils.asFlow(retVal) : CoroutinesUtils.awaitSingleOrNull(retVal, args[args.length - 1]);
 			}

spring-aop/src/main/java/org/springframework/aop/support/AopUtils.java

@@ -66,7 +66,7 @@ import org.springframework.util.ReflectionUtils;
  */
 public abstract class AopUtils {
 
-	private static final boolean coroutinesReactorPresent = ClassUtils.isPresent(
+	private static final boolean COROUTINES_REACTOR_PRESENT = ClassUtils.isPresent(
 			"kotlinx.coroutines.reactor.MonoKt", AopUtils.class.getClassLoader());
 
 
@@ -355,7 +355,7 @@ public abstract class AopUtils {
 		try {
 			Method originalMethod = BridgeMethodResolver.findBridgedMethod(method);
 			ReflectionUtils.makeAccessible(originalMethod);
-			return (coroutinesReactorPresent && KotlinDetector.isSuspendingFunction(originalMethod) ?
+			return (COROUTINES_REACTOR_PRESENT && KotlinDetector.isSuspendingFunction(originalMethod) ?
 					KotlinDelegate.invokeSuspendingFunction(originalMethod, target, args) : originalMethod.invoke(target, args));
 		}
 		catch (InvocationTargetException ex) {

spring-beans/src/main/java/org/springframework/beans/factory/support/DisposableBeanAdapter.java

@@ -76,7 +76,7 @@ class DisposableBeanAdapter implements DisposableBean, Runnable, Serializable {
 
 	private static final Log logger = LogFactory.getLog(DisposableBeanAdapter.class);
 
-	private static final boolean reactiveStreamsPresent = ClassUtils.isPresent(
+	private static final boolean REACTIVE_STREAMS_PRESENT = ClassUtils.isPresent(
 			"org.reactivestreams.Publisher", DisposableBeanAdapter.class.getClassLoader());
 
 
@@ -320,7 +320,7 @@ class DisposableBeanAdapter implements DisposableBean, Runnable, Serializable {
 				future.get();
 				logDestroyMethodCompletion(destroyMethod, true);
 			}
-			else if (!reactiveStreamsPresent || !new ReactiveDestroyMethodHandler().await(destroyMethod, returnValue)) {
+			else if (!REACTIVE_STREAMS_PRESENT || !new ReactiveDestroyMethodHandler().await(destroyMethod, returnValue)) {
 				if (logger.isDebugEnabled()) {
 					logger.debug("Unknown return value type from custom destroy method '" + destroyMethod.getName() +
 							"' on bean with name '" + this.beanName + "': " + returnValue.getClass());

spring-context/src/main/java/org/springframework/cache/annotation/CachingConfigurationSelector.java

@@ -50,14 +50,14 @@ public class CachingConfigurationSelector extends AdviceModeImportSelector<Enabl
 			"org.springframework.cache.aspectj.AspectJJCacheConfiguration";
 
 
-	private static final boolean jsr107Present;
+	private static final boolean JSR_107_PRESENT;
 
-	private static final boolean jcacheImplPresent;
+	private static final boolean JCACHE_IMPL_PRESENT;
 
 	static {
 		ClassLoader classLoader = CachingConfigurationSelector.class.getClassLoader();
-		jsr107Present = ClassUtils.isPresent("javax.cache.Cache", classLoader);
-		jcacheImplPresent = ClassUtils.isPresent(PROXY_JCACHE_CONFIGURATION_CLASS, classLoader);
+		JSR_107_PRESENT = ClassUtils.isPresent("javax.cache.Cache", classLoader);
+		JCACHE_IMPL_PRESENT = ClassUtils.isPresent(PROXY_JCACHE_CONFIGURATION_CLASS, classLoader);
 	}
 
 
@@ -82,7 +82,7 @@ public class CachingConfigurationSelector extends AdviceModeImportSelector<Enabl
 		List<String> result = new ArrayList<>(3);
 		result.add(AutoProxyRegistrar.class.getName());
 		result.add(ProxyCachingConfiguration.class.getName());
-		if (jsr107Present && jcacheImplPresent) {
+		if (JSR_107_PRESENT && JCACHE_IMPL_PRESENT) {
 			result.add(PROXY_JCACHE_CONFIGURATION_CLASS);
 		}
 		return StringUtils.toStringArray(result);
@@ -95,7 +95,7 @@ public class CachingConfigurationSelector extends AdviceModeImportSelector<Enabl
 	private String[] getAspectJImports() {
 		List<String> result = new ArrayList<>(2);
 		result.add(CACHE_ASPECT_CONFIGURATION_CLASS_NAME);
-		if (jsr107Present && jcacheImplPresent) {
+		if (JSR_107_PRESENT && JCACHE_IMPL_PRESENT) {
 			result.add(JCACHE_ASPECT_CONFIGURATION_CLASS_NAME);
 		}
 		return StringUtils.toStringArray(result);

spring-context/src/main/java/org/springframework/cache/config/AnnotationDrivenCacheBeanDefinitionParser.java

@@ -61,14 +61,14 @@ class AnnotationDrivenCacheBeanDefinitionParser implements BeanDefinitionParser
 	private static final String JCACHE_ASPECT_CLASS_NAME =
 			"org.springframework.cache.aspectj.JCacheCacheAspect";
 
-	private static final boolean jsr107Present;
+	private static final boolean JSR_107_PRESENT;
 
-	private static final boolean jcacheImplPresent;
+	private static final boolean JCACHE_IMPL_PRESENT;
 
 	static {
 		ClassLoader classLoader = AnnotationDrivenCacheBeanDefinitionParser.class.getClassLoader();
-		jsr107Present = ClassUtils.isPresent("javax.cache.Cache", classLoader);
-		jcacheImplPresent = ClassUtils.isPresent(
+		JSR_107_PRESENT = ClassUtils.isPresent("javax.cache.Cache", classLoader);
+		JCACHE_IMPL_PRESENT = ClassUtils.isPresent(
 				"org.springframework.cache.jcache.interceptor.DefaultJCacheOperationSource", classLoader);
 	}
 
@@ -95,7 +95,7 @@ class AnnotationDrivenCacheBeanDefinitionParser implements BeanDefinitionParser
 
 	private void registerCacheAspect(Element element, ParserContext parserContext) {
 		SpringCachingConfigurer.registerCacheAspect(element, parserContext);
-		if (jsr107Present && jcacheImplPresent) {
+		if (JSR_107_PRESENT && JCACHE_IMPL_PRESENT) {
 			JCacheCachingConfigurer.registerCacheAspect(element, parserContext);
 		}
 	}
@@ -103,7 +103,7 @@ class AnnotationDrivenCacheBeanDefinitionParser implements BeanDefinitionParser
 	private void registerCacheAdvisor(Element element, ParserContext parserContext) {
 		AopNamespaceUtils.registerAutoProxyCreatorIfNecessary(parserContext, element);
 		SpringCachingConfigurer.registerCacheAdvisor(element, parserContext);
-		if (jsr107Present && jcacheImplPresent) {
+		if (JSR_107_PRESENT && JCACHE_IMPL_PRESENT) {
 			JCacheCachingConfigurer.registerCacheAdvisor(element, parserContext);
 		}
 	}

spring-context/src/main/java/org/springframework/cache/interceptor/CacheAspectSupport.java

@@ -114,10 +114,10 @@ public abstract class CacheAspectSupport extends AbstractCacheInvoker
 	 */
 	public static final String IGNORE_REACTIVESTREAMS_PROPERTY_NAME = "spring.cache.reactivestreams.ignore";
 
-	private static final boolean shouldIgnoreReactiveStreams =
+	private static final boolean SHOULD_IGNORE_REACTIVE_STREAMS =
 			SpringProperties.getFlag(IGNORE_REACTIVESTREAMS_PROPERTY_NAME);
 
-	private static final boolean reactiveStreamsPresent = ClassUtils.isPresent(
+	private static final boolean REACTIVE_STREAMS_PRESENT = ClassUtils.isPresent(
 			"org.reactivestreams.Publisher", CacheAspectSupport.class.getClassLoader());
 
 
@@ -145,7 +145,7 @@ public abstract class CacheAspectSupport extends AbstractCacheInvoker
 
 	protected CacheAspectSupport() {
 		this.reactiveCachingHandler =
-				(reactiveStreamsPresent && !shouldIgnoreReactiveStreams ? new ReactiveCachingHandler() : null);
+				(REACTIVE_STREAMS_PRESENT && !SHOULD_IGNORE_REACTIVE_STREAMS ? new ReactiveCachingHandler() : null);
 	}
 
 

spring-context/src/main/java/org/springframework/context/annotation/AnnotationConfigUtils.java

@@ -116,10 +116,10 @@ public abstract class AnnotationConfigUtils {
 
 	private static final ClassLoader classLoader = AnnotationConfigUtils.class.getClassLoader();
 
-	private static final boolean jakartaAnnotationsPresent =
+	private static final boolean JAKARTA_ANNOTATIONS_PRESENT =
 			ClassUtils.isPresent("jakarta.annotation.PostConstruct", classLoader);
 
-	private static final boolean jpaPresent =
+	private static final boolean JPA_PRESENT =
 			ClassUtils.isPresent("jakarta.persistence.EntityManagerFactory", classLoader) &&
 					ClassUtils.isPresent(PERSISTENCE_ANNOTATION_PROCESSOR_CLASS_NAME, classLoader);
 
@@ -168,14 +168,14 @@ public abstract class AnnotationConfigUtils {
 		}
 
 		// Check for Jakarta Annotations support, and if present add the CommonAnnotationBeanPostProcessor.
-		if (jakartaAnnotationsPresent && !registry.containsBeanDefinition(COMMON_ANNOTATION_PROCESSOR_BEAN_NAME)) {
+		if (JAKARTA_ANNOTATIONS_PRESENT && !registry.containsBeanDefinition(COMMON_ANNOTATION_PROCESSOR_BEAN_NAME)) {
 			RootBeanDefinition def = new RootBeanDefinition(CommonAnnotationBeanPostProcessor.class);
 			def.setSource(source);
 			beanDefs.add(registerPostProcessor(registry, def, COMMON_ANNOTATION_PROCESSOR_BEAN_NAME));
 		}
 
 		// Check for JPA support, and if present add the PersistenceAnnotationBeanPostProcessor.
-		if (jpaPresent && !registry.containsBeanDefinition(PERSISTENCE_ANNOTATION_PROCESSOR_BEAN_NAME)) {
+		if (JPA_PRESENT && !registry.containsBeanDefinition(PERSISTENCE_ANNOTATION_PROCESSOR_BEAN_NAME)) {
 			RootBeanDefinition def = new RootBeanDefinition();
 			try {
 				def.setBeanClass(ClassUtils.forName(PERSISTENCE_ANNOTATION_PROCESSOR_CLASS_NAME,

spring-context/src/main/java/org/springframework/context/annotation/CommonAnnotationBeanPostProcessor.java

@@ -142,24 +142,24 @@ public class CommonAnnotationBeanPostProcessor extends InitDestroyAnnotationBean
 		implements InstantiationAwareBeanPostProcessor, BeanFactoryAware, Serializable {
 
 	// Defensive reference to JNDI API for JDK 9+ (optional java.naming module)
-	private static final boolean jndiPresent = ClassUtils.isPresent(
+	private static final boolean JNDI_PRESENT = ClassUtils.isPresent(
 			"javax.naming.InitialContext", CommonAnnotationBeanPostProcessor.class.getClassLoader());
 
 	private static final Set<Class<? extends Annotation>> resourceAnnotationTypes = CollectionUtils.newLinkedHashSet(3);
 
-	private static final @Nullable Class<? extends Annotation> jakartaResourceType;
+	private static final @Nullable Class<? extends Annotation> JAKARTA_RESOURCE_TYPE;
 
-	private static final @Nullable Class<? extends Annotation> ejbAnnotationType;
+	private static final @Nullable Class<? extends Annotation> EJB_ANNOTATION_TYPE;
 
 	static {
-		jakartaResourceType = loadAnnotationType("jakarta.annotation.Resource");
-		if (jakartaResourceType != null) {
-			resourceAnnotationTypes.add(jakartaResourceType);
+		JAKARTA_RESOURCE_TYPE = loadAnnotationType("jakarta.annotation.Resource");
+		if (JAKARTA_RESOURCE_TYPE != null) {
+			resourceAnnotationTypes.add(JAKARTA_RESOURCE_TYPE);
 		}
 
-		ejbAnnotationType = loadAnnotationType("jakarta.ejb.EJB");
-		if (ejbAnnotationType != null) {
-			resourceAnnotationTypes.add(ejbAnnotationType);
+		EJB_ANNOTATION_TYPE = loadAnnotationType("jakarta.ejb.EJB");
+		if (EJB_ANNOTATION_TYPE != null) {
+			resourceAnnotationTypes.add(EJB_ANNOTATION_TYPE);
 		}
 	}
 
@@ -195,7 +195,7 @@ public class CommonAnnotationBeanPostProcessor extends InitDestroyAnnotationBean
 		addDestroyAnnotationType(loadAnnotationType("jakarta.annotation.PreDestroy"));
 
 		// java.naming module present on JDK 9+?
-		if (jndiPresent) {
+		if (JNDI_PRESENT) {
 			this.jndiFactory = new SimpleJndiBeanFactory();
 		}
 	}
@@ -405,13 +405,13 @@ public class CommonAnnotationBeanPostProcessor extends InitDestroyAnnotationBean
 			final List<InjectionMetadata.InjectedElement> currElements = new ArrayList<>();
 
 			ReflectionUtils.doWithLocalFields(targetClass, field -> {
-				if (ejbAnnotationType != null && field.isAnnotationPresent(ejbAnnotationType)) {
+				if (EJB_ANNOTATION_TYPE != null && field.isAnnotationPresent(EJB_ANNOTATION_TYPE)) {
 					if (Modifier.isStatic(field.getModifiers())) {
 						throw new IllegalStateException("@EJB annotation is not supported on static fields");
 					}
 					currElements.add(new EjbRefElement(field, field, null));
 				}
-				else if (jakartaResourceType != null && field.isAnnotationPresent(jakartaResourceType)) {
+				else if (JAKARTA_RESOURCE_TYPE != null && field.isAnnotationPresent(JAKARTA_RESOURCE_TYPE)) {
 					if (Modifier.isStatic(field.getModifiers())) {
 						throw new IllegalStateException("@Resource annotation is not supported on static fields");
 					}
@@ -426,7 +426,7 @@ public class CommonAnnotationBeanPostProcessor extends InitDestroyAnnotationBean
 				if (!BridgeMethodResolver.isVisibilityBridgeMethodPair(method, bridgedMethod)) {
 					return;
 				}
-				if (ejbAnnotationType != null && bridgedMethod.isAnnotationPresent(ejbAnnotationType)) {
+				if (EJB_ANNOTATION_TYPE != null && bridgedMethod.isAnnotationPresent(EJB_ANNOTATION_TYPE)) {
 					if (method.equals(ClassUtils.getMostSpecificMethod(method, clazz))) {
 						if (Modifier.isStatic(method.getModifiers())) {
 							throw new IllegalStateException("@EJB annotation is not supported on static methods");
@@ -438,7 +438,7 @@ public class CommonAnnotationBeanPostProcessor extends InitDestroyAnnotationBean
 						currElements.add(new EjbRefElement(method, bridgedMethod, pd));
 					}
 				}
-				else if (jakartaResourceType != null && bridgedMethod.isAnnotationPresent(jakartaResourceType)) {
+				else if (JAKARTA_RESOURCE_TYPE != null && bridgedMethod.isAnnotationPresent(JAKARTA_RESOURCE_TYPE)) {
 					if (method.equals(ClassUtils.getMostSpecificMethod(method, clazz))) {
 						if (Modifier.isStatic(method.getModifiers())) {
 							throw new IllegalStateException("@Resource annotation is not supported on static methods");

spring-context/src/main/java/org/springframework/context/event/ApplicationListenerMethodAdapter.java

@@ -74,7 +74,7 @@ import org.springframework.util.StringUtils;
  */
 public class ApplicationListenerMethodAdapter implements GenericApplicationListener {
 
-	private static final boolean reactiveStreamsPresent = ClassUtils.isPresent(
+	private static final boolean REACTIVE_STREAMS_PRESENT = ClassUtils.isPresent(
 			"org.reactivestreams.Publisher", ApplicationListenerMethodAdapter.class.getClassLoader());
 
 
@@ -309,7 +309,7 @@ public class ApplicationListenerMethodAdapter implements GenericApplicationListe
 	}
 
 	protected void handleResult(Object result) {
-		if (reactiveStreamsPresent && new ReactiveResultHandler().subscribeToPublisher(result)) {
+		if (REACTIVE_STREAMS_PRESENT && new ReactiveResultHandler().subscribeToPublisher(result)) {
 			if (logger.isTraceEnabled()) {
 				logger.trace("Adapted to reactive result: " + result);
 			}

spring-context/src/main/java/org/springframework/format/support/DefaultFormattingConversionService.java

@@ -47,11 +47,11 @@ import org.springframework.util.StringValueResolver;
  */
 public class DefaultFormattingConversionService extends FormattingConversionService {
 
-	private static final boolean jsr354Present;
+	private static final boolean JSR_354_PRESENT;
 
 	static {
 		ClassLoader classLoader = DefaultFormattingConversionService.class.getClassLoader();
-		jsr354Present = ClassUtils.isPresent("javax.money.MonetaryAmount", classLoader);
+		JSR_354_PRESENT = ClassUtils.isPresent("javax.money.MonetaryAmount", classLoader);
 	}
 
 	/**
@@ -107,7 +107,7 @@ public class DefaultFormattingConversionService extends FormattingConversionServ
 		formatterRegistry.addFormatterForFieldAnnotation(new NumberFormatAnnotationFormatterFactory());
 
 		// Default handling of monetary values
-		if (jsr354Present) {
+		if (JSR_354_PRESENT) {
 			formatterRegistry.addFormatter(new CurrencyUnitFormatter());
 			formatterRegistry.addFormatter(new MonetaryAmountFormatter());
 			formatterRegistry.addFormatterForFieldAnnotation(new Jsr354NumberFormatAnnotationFormatterFactory());

spring-context/src/main/java/org/springframework/resilience/retry/AbstractRetryInterceptor.java

@@ -51,14 +51,14 @@ public abstract class AbstractRetryInterceptor implements MethodInterceptor {
 	/**
 	 * Reactive Streams API present on the classpath?
 	 */
-	private static final boolean reactiveStreamsPresent = ClassUtils.isPresent(
+	private static final boolean REACTIVE_STREAMS_PRESENT = ClassUtils.isPresent(
 			"org.reactivestreams.Publisher", AbstractRetryInterceptor.class.getClassLoader());
 
 	private final @Nullable ReactiveAdapterRegistry reactiveAdapterRegistry;
 
 
 	public AbstractRetryInterceptor() {
-		if (reactiveStreamsPresent) {
+		if (REACTIVE_STREAMS_PRESENT) {
 			this.reactiveAdapterRegistry = ReactiveAdapterRegistry.getSharedInstance();
 		}
 		else {

spring-context/src/main/java/org/springframework/scheduling/annotation/ScheduledAnnotationBeanPostProcessor.java

@@ -127,7 +127,7 @@ public class ScheduledAnnotationBeanPostProcessor
 	/**
 	 * Reactive Streams API present on the classpath?
 	 */
-	private static final boolean reactiveStreamsPresent = ClassUtils.isPresent(
+	private static final boolean REACTIVE_STREAMS_PRESENT = ClassUtils.isPresent(
 			"org.reactivestreams.Publisher", ScheduledAnnotationBeanPostProcessor.class.getClassLoader());
 
 	protected final Log logger = LogFactory.getLog(getClass());
@@ -330,7 +330,7 @@ public class ScheduledAnnotationBeanPostProcessor
 	protected void processScheduled(Scheduled scheduled, Method method, Object bean) {
 		// Is the method a Kotlin suspending function? Throws if true and the reactor bridge isn't on the classpath.
 		// Does the method return a reactive type? Throws if true and it isn't a deferred Publisher type.
-		if (reactiveStreamsPresent && ScheduledAnnotationReactiveSupport.isReactive(method)) {
+		if (REACTIVE_STREAMS_PRESENT && ScheduledAnnotationReactiveSupport.isReactive(method)) {
 			processScheduledAsync(scheduled, method, bean);
 			return;
 		}

spring-context/src/main/java/org/springframework/scheduling/annotation/ScheduledAnnotationReactiveSupport.java

@@ -60,10 +60,10 @@ import static org.springframework.scheduling.support.ScheduledTaskObservationDoc
  */
 abstract class ScheduledAnnotationReactiveSupport {
 
-	static final boolean reactorPresent = ClassUtils.isPresent(
+	static final boolean REACTOR_PRESENT = ClassUtils.isPresent(
 			"reactor.core.publisher.Flux", ScheduledAnnotationReactiveSupport.class.getClassLoader());
 
-	static final boolean coroutinesReactorPresent = ClassUtils.isPresent(
+	static final boolean COROUTINES_REACTOR_PRESENT = ClassUtils.isPresent(
 			"kotlinx.coroutines.reactor.MonoKt", ScheduledAnnotationReactiveSupport.class.getClassLoader());
 
 	private static final Log logger = LogFactory.getLog(ScheduledAnnotationReactiveSupport.class);
@@ -87,7 +87,7 @@ abstract class ScheduledAnnotationReactiveSupport {
 			// parameter in reflective inspection
 			Assert.isTrue(method.getParameterCount() == 1,
 					"Kotlin suspending functions may only be annotated with @Scheduled if declared without arguments");
-			Assert.isTrue(coroutinesReactorPresent, "Kotlin suspending functions may only be annotated with " +
+			Assert.isTrue(COROUTINES_REACTOR_PRESENT, "Kotlin suspending functions may only be annotated with " +
 					"@Scheduled if the Coroutine-Reactor bridge (kotlinx.coroutines.reactor) is present at runtime");
 			return true;
 		}
@@ -161,7 +161,7 @@ abstract class ScheduledAnnotationReactiveSupport {
 
 			Publisher<?> publisher = adapter.toPublisher(returnValue);
 			// If Reactor is on the classpath, we could benefit from having a checkpoint for debuggability
-			if (reactorPresent) {
+			if (REACTOR_PRESENT) {
 				return Flux.from(publisher).checkpoint(
 						"@Scheduled '"+ method.getName() + "()' in '" + method.getDeclaringClass().getName() + "'");
 			}
@@ -246,7 +246,7 @@ abstract class ScheduledAnnotationReactiveSupport {
 
 		private void subscribe(TrackingSubscriber subscriber, Observation observation) {
 			this.subscriptionTrackerRegistry.add(subscriber);
-			if (reactorPresent) {
+			if (REACTOR_PRESENT) {
 				observation.start();
 				Flux.from(this.publisher)
 						.contextWrite(context -> context.put(ObservationThreadLocalAccessor.KEY, observation))

spring-context/src/main/java/org/springframework/validation/beanvalidation/BeanValidationBeanRegistrationAotProcessor.java

@@ -61,7 +61,7 @@ import org.springframework.util.ReflectionUtils;
  */
 class BeanValidationBeanRegistrationAotProcessor implements BeanRegistrationAotProcessor {
 
-	private static final boolean beanValidationPresent = ClassUtils.isPresent(
+	private static final boolean BEAN_VALIDATION_PRESENT = ClassUtils.isPresent(
 			"jakarta.validation.Validation", BeanValidationBeanRegistrationAotProcessor.class.getClassLoader());
 
 	private static final Log logger = LogFactory.getLog(BeanValidationBeanRegistrationAotProcessor.class);
@@ -69,7 +69,7 @@ class BeanValidationBeanRegistrationAotProcessor implements BeanRegistrationAotP
 
 	@Override
 	public @Nullable BeanRegistrationAotContribution processAheadOfTime(RegisteredBean registeredBean) {
-		if (beanValidationPresent) {
+		if (BEAN_VALIDATION_PRESENT) {
 			return BeanValidationDelegate.processAheadOfTime(registeredBean);
 		}
 		return null;

spring-context/src/main/java/org/springframework/validation/beanvalidation/MethodValidationInterceptor.java

@@ -79,7 +79,7 @@ import org.springframework.validation.method.ParameterValidationResult;
  */
 public class MethodValidationInterceptor implements MethodInterceptor {
 
-	private static final boolean reactorPresent = ClassUtils.isPresent(
+	private static final boolean REACTOR_PRESENT = ClassUtils.isPresent(
 			"reactor.core.publisher.Mono", MethodValidationInterceptor.class.getClassLoader());
 
 
@@ -152,7 +152,7 @@ public class MethodValidationInterceptor implements MethodInterceptor {
 		@Nullable Object[] arguments = invocation.getArguments();
 		Class<?>[] groups = determineValidationGroups(invocation);
 
-		if (reactorPresent) {
+		if (REACTOR_PRESENT) {
 			arguments = ReactorValidationHelper.insertAsyncValidation(
 					this.validationAdapter.getSpringValidatorAdapter(), this.adaptViolations,
 					target, method, arguments);

spring-context/src/test/java/org/springframework/scheduling/annotation/ScheduledAnnotationReactiveSupportTests.java

@@ -50,7 +50,7 @@ class ScheduledAnnotationReactiveSupportTests {
 
 	@Test
 	void ensureReactor() {
-		assertThat(ScheduledAnnotationReactiveSupport.reactorPresent).isTrue();
+		assertThat(ScheduledAnnotationReactiveSupport.REACTOR_PRESENT).isTrue();
 	}
 
 	@ParameterizedTest

spring-context/src/test/kotlin/org/springframework/scheduling/annotation/KotlinScheduledAnnotationReactiveSupportTests.kt

@@ -43,12 +43,12 @@ class KotlinScheduledAnnotationReactiveSupportTests {
 
 	@Test
 	fun ensureReactor() {
-		assertThat(ScheduledAnnotationReactiveSupport.reactorPresent).isTrue
+		assertThat(ScheduledAnnotationReactiveSupport.REACTOR_PRESENT).isTrue
 	}
 
 	@Test
 	fun ensureKotlinCoroutineReactorBridge() {
-		assertThat(ScheduledAnnotationReactiveSupport.coroutinesReactorPresent).isTrue
+		assertThat(ScheduledAnnotationReactiveSupport.COROUTINES_REACTOR_PRESENT).isTrue
 	}
 
 	@ParameterizedTest

spring-core/src/main/java/org/springframework/aot/hint/BindingReflectionHintsRegistrar.java

@@ -55,7 +55,7 @@ public class BindingReflectionHintsRegistrar {
 
 	private static final String JACKSON_ANNOTATION = "com.fasterxml.jackson.annotation.JacksonAnnotation";
 
-	private static final boolean jacksonAnnotationPresent =
+	private static final boolean JACKSON_ANNOTATION_PRESENT =
 			ClassUtils.isPresent(JACKSON_ANNOTATION, BindingReflectionHintsRegistrar.class.getClassLoader());
 
 
@@ -113,7 +113,7 @@ public class BindingReflectionHintsRegistrar {
 							registerPropertyHints(hints, seen, method, -1);
 						}
 					}
-					if (jacksonAnnotationPresent) {
+					if (JACKSON_ANNOTATION_PRESENT) {
 						registerJacksonHints(hints, clazz);
 					}
 				}

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

@@ -34,16 +34,16 @@ import org.springframework.util.ClassUtils;
 @SuppressWarnings("unchecked")
 public abstract class KotlinDetector {
 
-	private static final @Nullable Class<? extends Annotation> kotlinMetadata;
+	private static final @Nullable Class<? extends Annotation> KOTLIN_METADATA;
 
-	private static final @Nullable Class<? extends Annotation> kotlinJvmInline;
+	private static final @Nullable Class<? extends Annotation> KOTLIN_JVM_INLINE;
 
-	private static final @Nullable Class<?> kotlinCoroutineContinuation;
+	private static final @Nullable Class<?> KOTLIN_COROUTINE_CONTINUATION;
 
 	// For ConstantFieldFeature compliance, otherwise could be deduced from kotlinMetadata
-	private static final boolean kotlinPresent;
+	private static final boolean KOTLIN_PRESENT;
 
-	private static final boolean kotlinReflectPresent;
+	private static final boolean KOTLIN_REFLECT_PRESENT;
 
 	static {
 		ClassLoader classLoader = KotlinDetector.class.getClassLoader();
@@ -68,11 +68,11 @@ public abstract class KotlinDetector {
 		catch (ClassNotFoundException ex) {
 			// Kotlin API not available - no Kotlin support
 		}
-		kotlinMetadata = (Class<? extends Annotation>) metadata;
-		kotlinPresent = (kotlinMetadata != null);
-		kotlinReflectPresent = ClassUtils.isPresent("kotlin.reflect.full.KClasses", classLoader);
-		kotlinJvmInline = (Class<? extends Annotation>) jvmInline;
-		kotlinCoroutineContinuation = coroutineContinuation;
+		KOTLIN_METADATA = (Class<? extends Annotation>) metadata;
+		KOTLIN_PRESENT = (KOTLIN_METADATA != null);
+		KOTLIN_REFLECT_PRESENT = ClassUtils.isPresent("kotlin.reflect.full.KClasses", classLoader);
+		KOTLIN_JVM_INLINE = (Class<? extends Annotation>) jvmInline;
+		KOTLIN_COROUTINE_CONTINUATION = coroutineContinuation;
 	}
 
 
@@ -80,7 +80,7 @@ public abstract class KotlinDetector {
 	 * Determine whether Kotlin is present in general.
 	 */
 	public static boolean isKotlinPresent() {
-		return kotlinPresent;
+		return KOTLIN_PRESENT;
 	}
 
 	/**
@@ -88,7 +88,7 @@ public abstract class KotlinDetector {
 	 * @since 5.1
 	 */
 	public static boolean isKotlinReflectPresent() {
-		return kotlinReflectPresent;
+		return KOTLIN_REFLECT_PRESENT;
 	}
 
 	/**
@@ -100,7 +100,7 @@ public abstract class KotlinDetector {
 	 * as invokedynamic has become the default method for lambda generation.
 	 */
 	public static boolean isKotlinType(Class<?> clazz) {
-		return (kotlinPresent && clazz.getDeclaredAnnotation(kotlinMetadata) != null);
+		return (KOTLIN_PRESENT && clazz.getDeclaredAnnotation(KOTLIN_METADATA) != null);
 	}
 
 	/**
@@ -108,11 +108,11 @@ public abstract class KotlinDetector {
 	 * @since 5.3
 	 */
 	public static boolean isSuspendingFunction(Method method) {
-		if (kotlinCoroutineContinuation == null) {
+		if (KOTLIN_COROUTINE_CONTINUATION == null) {
 			return false;
 		}
 		int parameterCount = method.getParameterCount();
-		return (parameterCount > 0 && method.getParameterTypes()[parameterCount - 1] == kotlinCoroutineContinuation);
+		return (parameterCount > 0 && method.getParameterTypes()[parameterCount - 1] == KOTLIN_COROUTINE_CONTINUATION);
 	}
 
 	/**
@@ -122,7 +122,7 @@ public abstract class KotlinDetector {
 	 * @see <a href="https://kotlinlang.org/docs/inline-classes.html">Kotlin inline value classes</a>
 	 */
 	public static boolean isInlineClass(Class<?> clazz) {
-		return (kotlinJvmInline != null && clazz.getDeclaredAnnotation(kotlinJvmInline) != null);
+		return (KOTLIN_JVM_INLINE != null && clazz.getDeclaredAnnotation(KOTLIN_JVM_INLINE) != null);
 	}
 
 }

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

@@ -61,23 +61,23 @@ public class ReactiveAdapterRegistry {
 
 	private static volatile @Nullable ReactiveAdapterRegistry sharedInstance;
 
-	private static final boolean reactiveStreamsPresent;
+	private static final boolean REACTIVE_STREAMS_PRESENT;
 
-	private static final boolean reactorPresent;
+	private static final boolean REACTOR_PRESENT;
 
-	private static final boolean rxjava3Present;
+	private static final boolean RXJAVA_3_PRESENT;
 
-	private static final boolean kotlinCoroutinesPresent;
+	private static final boolean COROUTINES_REACTOR_PRESENT;
 
-	private static final boolean mutinyPresent;
+	private static final boolean MUTINY_PRESENT;
 
 	static {
 		ClassLoader classLoader = ReactiveAdapterRegistry.class.getClassLoader();
-		reactiveStreamsPresent = ClassUtils.isPresent("org.reactivestreams.Publisher", classLoader);
-		reactorPresent = ClassUtils.isPresent("reactor.core.publisher.Flux", classLoader);
-		rxjava3Present = ClassUtils.isPresent("io.reactivex.rxjava3.core.Flowable", classLoader);
-		kotlinCoroutinesPresent = ClassUtils.isPresent("kotlinx.coroutines.reactor.MonoKt", classLoader);
-		mutinyPresent = ClassUtils.isPresent("io.smallrye.mutiny.Multi", classLoader);
+		REACTIVE_STREAMS_PRESENT = ClassUtils.isPresent("org.reactivestreams.Publisher", classLoader);
+		REACTOR_PRESENT = ClassUtils.isPresent("reactor.core.publisher.Flux", classLoader);
+		RXJAVA_3_PRESENT = ClassUtils.isPresent("io.reactivex.rxjava3.core.Flowable", classLoader);
+		COROUTINES_REACTOR_PRESENT = ClassUtils.isPresent("kotlinx.coroutines.reactor.MonoKt", classLoader);
+		MUTINY_PRESENT = ClassUtils.isPresent("io.smallrye.mutiny.Multi", classLoader);
 	}
 
 	private final List<ReactiveAdapter> adapters = new ArrayList<>();
@@ -89,32 +89,32 @@ public class ReactiveAdapterRegistry {
 	 */
 	public ReactiveAdapterRegistry() {
 		// Defensive guard for the Reactive Streams API itself
-		if (!reactiveStreamsPresent) {
+		if (!REACTIVE_STREAMS_PRESENT) {
 			return;
 		}
 
 		// Reactor
-		if (reactorPresent) {
+		if (REACTOR_PRESENT) {
 			new ReactorRegistrar().registerAdapters(this);
 		}
 
 		// RxJava
-		if (rxjava3Present) {
+		if (RXJAVA_3_PRESENT) {
 			new RxJava3Registrar().registerAdapters(this);
 		}
 
 		// Kotlin Coroutines
-		if (reactorPresent && kotlinCoroutinesPresent) {
+		if (REACTOR_PRESENT && COROUTINES_REACTOR_PRESENT) {
 			new CoroutinesRegistrar().registerAdapters(this);
 		}
 
 		// SmallRye Mutiny
-		if (mutinyPresent) {
+		if (MUTINY_PRESENT) {
 			new MutinyRegistrar().registerAdapters(this);
 		}
 
 		// Simple Flow.Publisher bridge if Reactor is not present
-		if (!reactorPresent) {
+		if (!REACTOR_PRESENT) {
 			new FlowAdaptersRegistrar().registerAdapters(this);
 		}
 	}
@@ -161,7 +161,7 @@ public class ReactiveAdapterRegistry {
 	private ReactiveAdapter buildAdapter(ReactiveTypeDescriptor descriptor,
 			Function<Object, Publisher<?>> toAdapter, Function<Publisher<?>, Object> fromAdapter) {
 
-		return (reactorPresent ? new ReactorAdapter(descriptor, toAdapter, fromAdapter) :
+		return (REACTOR_PRESENT ? new ReactorAdapter(descriptor, toAdapter, fromAdapter) :
 				new ReactiveAdapter(descriptor, toAdapter, fromAdapter));
 	}
 

spring-expression/src/test/java/org/springframework/expression/spel/MapTests.java

@@ -43,15 +43,15 @@ class MapTests extends AbstractExpressionTests {
 
 	// if the list is full of literals then it will be of the type unmodifiableMapClass
 	// rather than HashMap (or similar)
-	private static final Class<?> unmodifiableMapClass = Collections.unmodifiableMap(Map.of()).getClass();
+	private static final Class<?> UNMODIFIABLE_MAP_CLASS = Collections.unmodifiableMap(Map.of()).getClass();
 
 
 	@Test
 	void inlineMapCreationForLiterals() {
-		evaluate("{'a':1, 'b':2, 'c':3, 'd':4, 'e':5}", "{a=1, b=2, c=3, d=4, e=5}", unmodifiableMapClass);
-		evaluate("{'a':1}", "{a=1}", unmodifiableMapClass);
-		evaluate("{'abc':'def', 'uvw':'xyz'}", "{abc=def, uvw=xyz}", unmodifiableMapClass);
-		evaluate("{:}", "{}", unmodifiableMapClass);
+		evaluate("{'a':1, 'b':2, 'c':3, 'd':4, 'e':5}", "{a=1, b=2, c=3, d=4, e=5}", UNMODIFIABLE_MAP_CLASS);
+		evaluate("{'a':1}", "{a=1}", UNMODIFIABLE_MAP_CLASS);
+		evaluate("{'abc':'def', 'uvw':'xyz'}", "{abc=def, uvw=xyz}", UNMODIFIABLE_MAP_CLASS);
+		evaluate("{:}", "{}", UNMODIFIABLE_MAP_CLASS);
 	}
 
 	@Test
@@ -65,9 +65,9 @@ class MapTests extends AbstractExpressionTests {
 
 	@Test
 	void inlineMapAndNesting() {
-		evaluate("{a:{a:1,b:2,c:3},b:{d:4,e:5,f:6}}", "{a={a=1, b=2, c=3}, b={d=4, e=5, f=6}}", unmodifiableMapClass);
-		evaluate("{a:{x:1,y:'2',z:3},b:{u:4,v:{'a','b'},w:5,x:6}}", "{a={x=1, y=2, z=3}, b={u=4, v=[a, b], w=5, x=6}}", unmodifiableMapClass);
-		evaluate("{a:{1,2,3},b:{4,5,6}}", "{a=[1, 2, 3], b=[4, 5, 6]}", unmodifiableMapClass);
+		evaluate("{a:{a:1,b:2,c:3},b:{d:4,e:5,f:6}}", "{a={a=1, b=2, c=3}, b={d=4, e=5, f=6}}", UNMODIFIABLE_MAP_CLASS);
+		evaluate("{a:{x:1,y:'2',z:3},b:{u:4,v:{'a','b'},w:5,x:6}}", "{a={x=1, y=2, z=3}, b={u=4, v=[a, b], w=5, x=6}}", UNMODIFIABLE_MAP_CLASS);
+		evaluate("{a:{1,2,3},b:{4,5,6}}", "{a=[1, 2, 3], b=[4, 5, 6]}", UNMODIFIABLE_MAP_CLASS);
 	}
 
 	@Test

spring-jms/src/main/java/org/springframework/jms/core/JmsTemplate.java

@@ -94,7 +94,7 @@ import org.springframework.util.ClassUtils;
  */
 public class JmsTemplate extends JmsDestinationAccessor implements JmsOperations {
 
-	private static final boolean micrometerJakartaPresent = ClassUtils.isPresent(
+	private static final boolean MICROMETER_JAKARTA_PRESENT = ClassUtils.isPresent(
 			"io.micrometer.jakarta9.instrument.jms.JmsInstrumentation", JmsTemplate.class.getClassLoader());
 
 	/** Internal ResourceFactory adapter for interacting with ConnectionFactoryUtils. */
@@ -530,7 +530,7 @@ public class JmsTemplate extends JmsDestinationAccessor implements JmsOperations
 			if (logger.isDebugEnabled()) {
 				logger.debug("Executing callback on JMS Session: " + sessionToUse);
 			}
-			if (micrometerJakartaPresent && this.observationRegistry != null) {
+			if (MICROMETER_JAKARTA_PRESENT && this.observationRegistry != null) {
 				sessionToUse = MicrometerInstrumentation.instrumentSession(sessionToUse, this.observationRegistry);
 			}
 			return action.doInJms(sessionToUse);
@@ -952,7 +952,7 @@ public class JmsTemplate extends JmsDestinationAccessor implements JmsOperations
 		try {
 			con = createConnection();
 			session = con.createSession(false, Session.AUTO_ACKNOWLEDGE);
-			if (micrometerJakartaPresent && this.observationRegistry != null) {
+			if (MICROMETER_JAKARTA_PRESENT && this.observationRegistry != null) {
 				session = MicrometerInstrumentation.instrumentSession(session, this.observationRegistry);
 			}
 			if (startConnection) {

spring-jms/src/main/java/org/springframework/jms/listener/AbstractMessageListenerContainer.java

@@ -151,7 +151,7 @@ import org.springframework.util.ErrorHandler;
 public abstract class AbstractMessageListenerContainer extends AbstractJmsListeningContainer
 		implements MessageListenerContainer {
 
-	private static final boolean micrometerJakartaPresent = ClassUtils.isPresent(
+	private static final boolean MICROMETER_JAKARTA_PRESENT = ClassUtils.isPresent(
 			"io.micrometer.jakarta9.instrument.jms.JmsInstrumentation",
 			AbstractMessageListenerContainer.class.getClassLoader());
 
@@ -700,7 +700,7 @@ public abstract class AbstractMessageListenerContainer extends AbstractJmsListen
 	 * @since 6.1
 	 */
 	protected Observation createObservation(Message message) {
-		if (micrometerJakartaPresent && this.observationRegistry != null) {
+		if (MICROMETER_JAKARTA_PRESENT && this.observationRegistry != null) {
 			return ObservationFactory.create(this.observationRegistry, message);
 		}
 		else {
@@ -785,7 +785,7 @@ public abstract class AbstractMessageListenerContainer extends AbstractJmsListen
 		Session sessionToClose = null;
 		try {
 			Session sessionToUse = session;
-			if (micrometerJakartaPresent && this.observationRegistry != null) {
+			if (MICROMETER_JAKARTA_PRESENT && this.observationRegistry != null) {
 				sessionToUse = MicrometerInstrumentation.instrumentSession(sessionToUse, this.observationRegistry);
 			}
 			if (!isExposeListenerSession()) {

spring-messaging/src/main/java/org/springframework/messaging/converter/ProtobufMessageConverter.java

@@ -67,7 +67,7 @@ public class ProtobufMessageConverter extends AbstractMessageConverter {
 	 */
 	public static final MimeType PROTOBUF = new MimeType("application", "x-protobuf", DEFAULT_CHARSET);
 
-	private static final boolean protobufJsonFormatPresent =
+	private static final boolean PROTOBUF_JSON_FORMAT_PRESENT =
 			ClassUtils.isPresent("com.google.protobuf.util.JsonFormat", ProtobufMessageConverter.class.getClassLoader());
 
 	private static final Map<Class<?>, Method> methodCache = new ConcurrentReferenceHashMap<>();
@@ -100,7 +100,7 @@ public class ProtobufMessageConverter extends AbstractMessageConverter {
 		if (formatSupport != null) {
 			this.protobufFormatSupport = formatSupport;
 		}
-		else if (protobufJsonFormatPresent) {
+		else if (PROTOBUF_JSON_FORMAT_PRESENT) {
 			this.protobufFormatSupport = new ProtobufJavaUtilSupport(null, null);
 		}
 		else {

spring-messaging/src/main/java/org/springframework/messaging/simp/annotation/support/SimpAnnotationMethodMessageHandler.java

@@ -94,7 +94,7 @@ import org.springframework.validation.Validator;
 public class SimpAnnotationMethodMessageHandler extends AbstractMethodMessageHandler<SimpMessageMappingInfo>
 		implements EmbeddedValueResolverAware, SmartLifecycle {
 
-	private static final boolean reactorPresent = ClassUtils.isPresent(
+	private static final boolean REACTOR_PRESENT = ClassUtils.isPresent(
 			"reactor.core.publisher.Flux", SimpAnnotationMethodMessageHandler.class.getClassLoader());
 
 
@@ -344,7 +344,7 @@ public class SimpAnnotationMethodMessageHandler extends AbstractMethodMessageHan
 		// Single-purpose return value types
 
 		handlers.add(new CompletableFutureReturnValueHandler());
-		if (reactorPresent) {
+		if (REACTOR_PRESENT) {
 			handlers.add(new ReactiveReturnValueHandler());
 		}
 

spring-messaging/src/main/java/org/springframework/messaging/simp/config/AbstractMessageBrokerConfiguration.java

@@ -104,25 +104,25 @@ public abstract class AbstractMessageBrokerConfiguration implements ApplicationC
 
 	private static final String MVC_VALIDATOR_NAME = "mvcValidator";
 
-	private static final boolean jacksonPresent;
+	private static final boolean JACKSON_PRESENT;
 
-	private static final boolean jackson2Present;
+	private static final boolean JACKSON_2_PRESENT;
 
-	private static final boolean gsonPresent;
+	private static final boolean GSON_PRESENT;
 
-	private static final boolean jsonbPresent;
+	private static final boolean JSONB_PRESENT;
 
-	private static final boolean kotlinSerializationJsonPresent;
+	private static final boolean KOTLIN_SERIALIZATION_JSON_PRESENT;
 
 
 	static {
 		ClassLoader classLoader = AbstractMessageBrokerConfiguration.class.getClassLoader();
-		jacksonPresent = ClassUtils.isPresent("tools.jackson.databind.ObjectMapper", classLoader);
-		jackson2Present = ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", classLoader) &&
+		JACKSON_PRESENT = ClassUtils.isPresent("tools.jackson.databind.ObjectMapper", classLoader);
+		JACKSON_2_PRESENT = ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", classLoader) &&
 				ClassUtils.isPresent("com.fasterxml.jackson.core.JsonGenerator", classLoader);
-		gsonPresent = ClassUtils.isPresent("com.google.gson.Gson", classLoader);
-		jsonbPresent = ClassUtils.isPresent("jakarta.json.bind.Jsonb", classLoader);
-		kotlinSerializationJsonPresent = ClassUtils.isPresent("kotlinx.serialization.json.Json", classLoader);
+		GSON_PRESENT = ClassUtils.isPresent("com.google.gson.Gson", classLoader);
+		JSONB_PRESENT = ClassUtils.isPresent("jakarta.json.bind.Jsonb", classLoader);
+		KOTLIN_SERIALIZATION_JSON_PRESENT = ClassUtils.isPresent("kotlinx.serialization.json.Json", classLoader);
 	}
 
 
@@ -502,19 +502,19 @@ public abstract class AbstractMessageBrokerConfiguration implements ApplicationC
 		if (registerDefaults) {
 			converters.add(new StringMessageConverter());
 			converters.add(new ByteArrayMessageConverter());
-			if (kotlinSerializationJsonPresent) {
+			if (KOTLIN_SERIALIZATION_JSON_PRESENT) {
 				converters.add(new KotlinSerializationJsonMessageConverter());
 			}
-			if (jacksonPresent) {
+			if (JACKSON_PRESENT) {
 				converters.add(createJacksonJsonConverter());
 			}
-			else if (jackson2Present) {
+			else if (JACKSON_2_PRESENT) {
 				converters.add(createJacksonConverter());
 			}
-			else if (gsonPresent) {
+			else if (GSON_PRESENT) {
 				converters.add(new GsonMessageConverter());
 			}
-			else if (jsonbPresent) {
+			else if (JSONB_PRESENT) {
 				converters.add(new JsonbMessageConverter());
 			}
 		}

spring-orm/src/main/java/org/springframework/orm/jpa/persistenceunit/PersistenceManagedTypesBeanRegistrationAotProcessor.java

@@ -68,12 +68,12 @@ import org.springframework.util.ReflectionUtils;
 @SuppressWarnings("unchecked")
 class PersistenceManagedTypesBeanRegistrationAotProcessor implements BeanRegistrationAotProcessor {
 
-	private static final boolean jpaPresent = ClassUtils.isPresent("jakarta.persistence.Entity",
+	private static final boolean JPA_PRESENT = ClassUtils.isPresent("jakarta.persistence.Entity",
 			PersistenceManagedTypesBeanRegistrationAotProcessor.class.getClassLoader());
 
 	@Override
 	public @Nullable BeanRegistrationAotContribution processAheadOfTime(RegisteredBean registeredBean) {
-		if (jpaPresent) {
+		if (JPA_PRESENT) {
 			if (PersistenceManagedTypes.class.isAssignableFrom(registeredBean.getBeanClass())) {
 				return BeanRegistrationAotContribution.withCustomCodeFragments(codeFragments ->
 						new JpaManagedTypesBeanRegistrationCodeFragments(codeFragments, registeredBean));

spring-test/src/main/java/org/springframework/test/context/BootstrapUtils.java

@@ -60,7 +60,7 @@ public abstract class BootstrapUtils {
 	private static final String WEB_APP_CONFIGURATION_ANNOTATION_CLASS_NAME =
 			"org.springframework.test.context.web.WebAppConfiguration";
 
-	private static final Class<? extends Annotation> webAppConfigurationClass = loadWebAppConfigurationClass();
+	private static final Class<? extends Annotation> WEB_APP_CONFIGURATION_CLASS = loadWebAppConfigurationClass();
 
 	private static final Log logger = LogFactory.getLog(BootstrapUtils.class);
 
@@ -196,7 +196,7 @@ public abstract class BootstrapUtils {
 	}
 
 	private static Class<?> resolveDefaultTestContextBootstrapper(Class<?> testClass) throws Exception {
-		boolean webApp = TestContextAnnotationUtils.hasAnnotation(testClass, webAppConfigurationClass);
+		boolean webApp = TestContextAnnotationUtils.hasAnnotation(testClass, WEB_APP_CONFIGURATION_CLASS);
 		String bootstrapperClassName = (webApp ? DEFAULT_WEB_TEST_CONTEXT_BOOTSTRAPPER_CLASS_NAME :
 				DEFAULT_TEST_CONTEXT_BOOTSTRAPPER_CLASS_NAME);
 		return ClassUtils.forName(bootstrapperClassName, BootstrapUtils.class.getClassLoader());

spring-test/src/main/java/org/springframework/test/context/aot/MergedContextConfigurationRuntimeHints.java

@@ -57,7 +57,7 @@ class MergedContextConfigurationRuntimeHints {
 
 	private static final String GET_RESOURCE_BASE_PATH_METHOD_NAME = "getResourceBasePath";
 
-	private static final Class<?> webMergedContextConfigurationClass = loadWebMergedContextConfigurationClass();
+	private static final Class<?> WEB_MERGED_CONTEXT_CONFIGURATION_CLASS = loadWebMergedContextConfigurationClass();
 
 	private static final Method getResourceBasePathMethod = loadGetResourceBasePathMethod();
 
@@ -90,7 +90,7 @@ class MergedContextConfigurationRuntimeHints {
 		}
 
 		// @WebAppConfiguration(value = ...)
-		if (webMergedContextConfigurationClass.isInstance(mergedConfig)) {
+		if (WEB_MERGED_CONTEXT_CONFIGURATION_CLASS.isInstance(mergedConfig)) {
 			String resourceBasePath;
 			try {
 				resourceBasePath = (String) getResourceBasePathMethod.invoke(mergedConfig);
@@ -162,7 +162,7 @@ class MergedContextConfigurationRuntimeHints {
 
 	private static Method loadGetResourceBasePathMethod() {
 		try {
-			return webMergedContextConfigurationClass.getMethod(GET_RESOURCE_BASE_PATH_METHOD_NAME);
+			return WEB_MERGED_CONTEXT_CONFIGURATION_CLASS.getMethod(GET_RESOURCE_BASE_PATH_METHOD_NAME);
 		}
 		catch (Exception ex) {
 			throw new IllegalStateException(

spring-test/src/main/java/org/springframework/test/context/bean/override/mockito/MockitoResetTestExecutionListener.java

@@ -63,17 +63,17 @@ public class MockitoResetTestExecutionListener extends AbstractTestExecutionList
 	 * @see #mockitoInitialized
 	 * @see #isEnabled()
 	 */
-	private static final boolean mockitoPresent = ClassUtils.isPresent("org.mockito.Mockito",
+	private static final boolean MOCKITO_PRESENT = ClassUtils.isPresent("org.mockito.Mockito",
 			MockitoResetTestExecutionListener.class.getClassLoader());
 
 	/**
 	 * Boolean flag which tracks whether Mockito has been successfully initialized
 	 * in the current environment.
-	 * <p>Even if {@link #mockitoPresent} evaluates to {@code true}, this flag
+	 * <p>Even if {@link #MOCKITO_PRESENT} evaluates to {@code true}, this flag
 	 * may eventually evaluate to {@code false} &mdash; for example, in a GraalVM
 	 * native image if the necessary reachability metadata has not been registered
 	 * for the {@link org.mockito.plugins.MockMaker} in use.
-	 * @see #mockitoPresent
+	 * @see #MOCKITO_PRESENT
 	 * @see #isEnabled()
 	 */
 	private static volatile @Nullable Boolean mockitoInitialized;
@@ -158,11 +158,11 @@ public class MockitoResetTestExecutionListener extends AbstractTestExecutionList
 
 	/**
 	 * Determine if this listener is enabled in the current environment.
-	 * @see #mockitoPresent
+	 * @see #MOCKITO_PRESENT
 	 * @see #mockitoInitialized
 	 */
 	private static boolean isEnabled() {
-		if (!mockitoPresent) {
+		if (!MOCKITO_PRESENT) {
 			return false;
 		}
 		Boolean enabled = mockitoInitialized;

spring-test/src/main/java/org/springframework/test/context/bean/override/mockito/MockitoSpyBeanOverrideHandler.java

@@ -80,7 +80,7 @@ class MockitoSpyBeanOverrideHandler extends AbstractMockitoBeanOverrideHandler {
 		if (StringUtils.hasLength(name)) {
 			settings.name(name);
 		}
-		if (SpringMockResolver.springAopPresent) {
+		if (SpringMockResolver.SPRING_AOP_PRESENT) {
 			settings.verificationStartedListeners(verificationStartedListener);
 		}
 

spring-test/src/main/java/org/springframework/test/context/bean/override/mockito/SpringMockResolver.java

@@ -37,13 +37,13 @@ import org.springframework.util.ClassUtils;
  */
 public class SpringMockResolver implements MockResolver {
 
-	static final boolean springAopPresent = ClassUtils.isPresent(
+	static final boolean SPRING_AOP_PRESENT = ClassUtils.isPresent(
 			"org.springframework.aop.framework.Advised", SpringMockResolver.class.getClassLoader());
 
 
 	@Override
 	public Object resolve(Object instance) {
-		if (springAopPresent) {
+		if (SPRING_AOP_PRESENT) {
 			return getUltimateTargetObject(instance);
 		}
 		return instance;

spring-test/src/main/java/org/springframework/test/context/support/DelegatingSmartContextLoader.java

@@ -39,7 +39,7 @@ public class DelegatingSmartContextLoader extends AbstractDelegatingSmartContext
 	private static final String GROOVY_XML_CONTEXT_LOADER_CLASS_NAME =
 			"org.springframework.test.context.support.GenericGroovyXmlContextLoader";
 
-	private static final boolean groovyPresent = ClassUtils.isPresent("groovy.lang.Closure",
+	private static final boolean GROOVY_PRESENT = ClassUtils.isPresent("groovy.lang.Closure",
 			DelegatingSmartContextLoader.class.getClassLoader()) &&
 				ClassUtils.isPresent(GROOVY_XML_CONTEXT_LOADER_CLASS_NAME,
 						DelegatingSmartContextLoader.class.getClassLoader());
@@ -50,7 +50,7 @@ public class DelegatingSmartContextLoader extends AbstractDelegatingSmartContext
 
 
 	public DelegatingSmartContextLoader() {
-		if (groovyPresent) {
+		if (GROOVY_PRESENT) {
 			try {
 				Class<?> loaderClass = ClassUtils.forName(GROOVY_XML_CONTEXT_LOADER_CLASS_NAME,
 					DelegatingSmartContextLoader.class.getClassLoader());

spring-test/src/main/java/org/springframework/test/context/web/WebDelegatingSmartContextLoader.java

@@ -38,7 +38,7 @@ public class WebDelegatingSmartContextLoader extends AbstractDelegatingSmartCont
 
 	private static final String GROOVY_XML_WEB_CONTEXT_LOADER_CLASS_NAME = "org.springframework.test.context.web.GenericGroovyXmlWebContextLoader";
 
-	private static final boolean groovyPresent = ClassUtils.isPresent("groovy.lang.Closure",
+	private static final boolean GROOVY_PRESENT = ClassUtils.isPresent("groovy.lang.Closure",
 			WebDelegatingSmartContextLoader.class.getClassLoader()) &&
 				ClassUtils.isPresent(GROOVY_XML_WEB_CONTEXT_LOADER_CLASS_NAME,
 						WebDelegatingSmartContextLoader.class.getClassLoader());
@@ -48,7 +48,7 @@ public class WebDelegatingSmartContextLoader extends AbstractDelegatingSmartCont
 
 
 	public WebDelegatingSmartContextLoader() {
-		if (groovyPresent) {
+		if (GROOVY_PRESENT) {
 			try {
 				Class<?> loaderClass = ClassUtils.forName(GROOVY_XML_WEB_CONTEXT_LOADER_CLASS_NAME,
 					WebDelegatingSmartContextLoader.class.getClassLoader());

spring-test/src/main/java/org/springframework/test/context/web/socket/MockServerContainerContextCustomizerFactory.java

@@ -38,7 +38,7 @@ import org.springframework.util.ClassUtils;
  */
 class MockServerContainerContextCustomizerFactory implements ContextCustomizerFactory {
 
-	private static final boolean webSocketPresent = ClassUtils.isPresent("jakarta.websocket.server.ServerContainer",
+	private static final boolean WEB_SOCKET_PRESENT = ClassUtils.isPresent("jakarta.websocket.server.ServerContainer",
 			MockServerContainerContextCustomizerFactory.class.getClassLoader());
 
 
@@ -46,7 +46,7 @@ class MockServerContainerContextCustomizerFactory implements ContextCustomizerFa
 	public @Nullable ContextCustomizer createContextCustomizer(Class<?> testClass,
 			List<ContextConfigurationAttributes> configAttributes) {
 
-		if (webSocketPresent && isAnnotatedWithWebAppConfiguration(testClass)) {
+		if (WEB_SOCKET_PRESENT && isAnnotatedWithWebAppConfiguration(testClass)) {
 			return new MockServerContainerContextCustomizer();
 		}
 		// Else, nothing to customize

spring-test/src/main/java/org/springframework/test/util/ReflectionTestUtils.java

@@ -75,7 +75,7 @@ public abstract class ReflectionTestUtils {
 
 	private static final Log logger = LogFactory.getLog(ReflectionTestUtils.class);
 
-	private static final boolean springAopPresent = ClassUtils.isPresent(
+	private static final boolean SPRING_AOP_PRESENT = ClassUtils.isPresent(
 			"org.springframework.aop.framework.Advised", ReflectionTestUtils.class.getClassLoader());
 
 
@@ -180,7 +180,7 @@ public abstract class ReflectionTestUtils {
 		Assert.isTrue(targetObject != null || targetClass != null,
 				"Either targetObject or targetClass for the field must be specified");
 
-		if (targetObject != null && springAopPresent) {
+		if (targetObject != null && SPRING_AOP_PRESENT) {
 			targetObject = AopTestUtils.getUltimateTargetObject(targetObject);
 		}
 		if (targetClass == null) {
@@ -263,7 +263,7 @@ public abstract class ReflectionTestUtils {
 		Assert.isTrue(targetObject != null || targetClass != null,
 			"Either targetObject or targetClass for the field must be specified");
 
-		if (targetObject != null && springAopPresent) {
+		if (targetObject != null && SPRING_AOP_PRESENT) {
 			targetObject = AopTestUtils.getUltimateTargetObject(targetObject);
 		}
 		if (targetClass == null) {
@@ -352,7 +352,7 @@ public abstract class ReflectionTestUtils {
 					safeToString(target), value));
 		}
 
-		if (springAopPresent) {
+		if (SPRING_AOP_PRESENT) {
 			// If the target is a CGLIB proxy which does not intercept the method, invoke the
 			// method on the ultimate target.
 			if (isCglibProxyThatDoesNotInterceptMethod(target, method)) {
@@ -406,7 +406,7 @@ public abstract class ReflectionTestUtils {
 					"Could not find getter method '%s' on %s", getterMethodName, safeToString(target)));
 		}
 
-		if (springAopPresent) {
+		if (SPRING_AOP_PRESENT) {
 			// If the target is a CGLIB proxy which does not intercept the method, invoke the
 			// method on the ultimate target.
 			if (isCglibProxyThatDoesNotInterceptMethod(target, method)) {
@@ -500,7 +500,7 @@ public abstract class ReflectionTestUtils {
 			methodInvoker.setArguments(args);
 			methodInvoker.prepare();
 
-			if (targetObject != null && springAopPresent) {
+			if (targetObject != null && SPRING_AOP_PRESENT) {
 				// If the target is a CGLIB proxy which does not intercept the method, invoke the
 				// method on the ultimate target.
 				if (isCglibProxyThatDoesNotInterceptMethod(targetObject, methodInvoker.getPreparedMethod())) {

spring-test/src/main/java/org/springframework/test/web/reactive/server/DefaultWebTestClientBuilder.java

@@ -56,22 +56,22 @@ import org.springframework.web.util.UriBuilderFactory;
  */
 class DefaultWebTestClientBuilder implements WebTestClient.Builder {
 
-	private static final boolean reactorNettyClientPresent;
+	private static final boolean REACTOR_NETTY_CLIENT_PRESENT;
 
-	private static final boolean jettyClientPresent;
+	private static final boolean JETTY_CLIENT_PRESENT;
 
-	private static final boolean httpComponentsClientPresent;
+	private static final boolean HTTP_COMPONENTS_CLIENT_PRESENT;
 
-	private static final boolean webFluxPresent;
+	private static final boolean WEB_FLUX_PRESENT;
 
 	static {
 		ClassLoader loader = DefaultWebTestClientBuilder.class.getClassLoader();
-		reactorNettyClientPresent = ClassUtils.isPresent("reactor.netty.http.client.HttpClient", loader);
-		jettyClientPresent = ClassUtils.isPresent("org.eclipse.jetty.client.HttpClient", loader);
-		httpComponentsClientPresent =
+		REACTOR_NETTY_CLIENT_PRESENT = ClassUtils.isPresent("reactor.netty.http.client.HttpClient", loader);
+		JETTY_CLIENT_PRESENT = ClassUtils.isPresent("org.eclipse.jetty.client.HttpClient", loader);
+		HTTP_COMPONENTS_CLIENT_PRESENT =
 				ClassUtils.isPresent("org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient", loader) &&
 						ClassUtils.isPresent("org.apache.hc.core5.reactive.ReactiveDataConsumer", loader);
-		webFluxPresent = ClassUtils.isPresent(
+		WEB_FLUX_PRESENT = ClassUtils.isPresent(
 				"org.springframework.web.reactive.function.client.ExchangeFunction", loader);
 	}
 
@@ -122,7 +122,7 @@ class DefaultWebTestClientBuilder implements WebTestClient.Builder {
 				"Expected WebHttpHandlerBuilder or ClientHttpConnector but not both.");
 
 		// Helpful message especially for MockMvcWebTestClient users
-		Assert.state(webFluxPresent,
+		Assert.state(WEB_FLUX_PRESENT,
 				"To use WebTestClient, please add spring-webflux to the test classpath.");
 
 		this.connector = connector;
@@ -312,13 +312,13 @@ class DefaultWebTestClientBuilder implements WebTestClient.Builder {
 	}
 
 	private static ClientHttpConnector initConnector() {
-		if (reactorNettyClientPresent) {
+		if (REACTOR_NETTY_CLIENT_PRESENT) {
 			return new ReactorClientHttpConnector();
 		}
-		else if (jettyClientPresent) {
+		else if (JETTY_CLIENT_PRESENT) {
 			return new JettyClientHttpConnector();
 		}
-		else if (httpComponentsClientPresent) {
+		else if (HTTP_COMPONENTS_CLIENT_PRESENT) {
 			return new HttpComponentsClientHttpConnector();
 		}
 		else {

spring-test/src/test/java/org/springframework/test/context/TestExecutionListenersTests.java

@@ -59,7 +59,7 @@ import static org.springframework.test.context.TestExecutionListeners.MergeMode.
  */
 class TestExecutionListenersTests {
 
-	private static final Class<?> micrometerListenerClass =
+	private static final Class<?> MICROMETER_LISTENER_CLASS =
 			ClassUtils.resolveClassName("org.springframework.test.context.observation.MicrometerObservationRegistryTestExecutionListener", null);
 
 	@Test
@@ -70,7 +70,7 @@ class TestExecutionListenersTests {
 				ApplicationEventsTestExecutionListener.class,//
 				BeanOverrideTestExecutionListener.class,//
 				DependencyInjectionTestExecutionListener.class,//
-				micrometerListenerClass,//
+				MICROMETER_LISTENER_CLASS,//
 				DirtiesContextTestExecutionListener.class,//
 				CommonCachesTestExecutionListener.class, //
 				TransactionalTestExecutionListener.class,//
@@ -93,7 +93,7 @@ class TestExecutionListenersTests {
 				ApplicationEventsTestExecutionListener.class,//
 				BeanOverrideTestExecutionListener.class,//
 				DependencyInjectionTestExecutionListener.class,//
-				micrometerListenerClass,//
+				MICROMETER_LISTENER_CLASS,//
 				DirtiesContextTestExecutionListener.class,//
 				CommonCachesTestExecutionListener.class, //
 				TransactionalTestExecutionListener.class,//
@@ -115,7 +115,7 @@ class TestExecutionListenersTests {
 				ApplicationEventsTestExecutionListener.class,//
 				BeanOverrideTestExecutionListener.class,//
 				DependencyInjectionTestExecutionListener.class,//
-				micrometerListenerClass,//
+				MICROMETER_LISTENER_CLASS,//
 				DirtiesContextTestExecutionListener.class,//
 				CommonCachesTestExecutionListener.class, //
 				TransactionalTestExecutionListener.class,
@@ -139,7 +139,7 @@ class TestExecutionListenersTests {
 				BeanOverrideTestExecutionListener.class,//
 				DependencyInjectionTestExecutionListener.class,//
 				BarTestExecutionListener.class,//
-				micrometerListenerClass,//
+				MICROMETER_LISTENER_CLASS,//
 				DirtiesContextTestExecutionListener.class,//
 				CommonCachesTestExecutionListener.class, //
 				TransactionalTestExecutionListener.class,//

spring-tx/src/main/java/org/springframework/transaction/annotation/AnnotationTransactionAttributeSource.java

@@ -60,14 +60,14 @@ import org.springframework.util.CollectionUtils;
 public class AnnotationTransactionAttributeSource extends AbstractFallbackTransactionAttributeSource
 		implements Serializable {
 
-	private static final boolean jtaPresent;
+	private static final boolean JTA_PRESENT;
 
-	private static final boolean ejb3Present;
+	private static final boolean EJB_3_PRESENT;
 
 	static {
 		ClassLoader classLoader = AnnotationTransactionAttributeSource.class.getClassLoader();
-		jtaPresent = ClassUtils.isPresent("jakarta.transaction.Transactional", classLoader);
-		ejb3Present = ClassUtils.isPresent("jakarta.ejb.TransactionAttribute", classLoader);
+		JTA_PRESENT = ClassUtils.isPresent("jakarta.transaction.Transactional", classLoader);
+		EJB_3_PRESENT = ClassUtils.isPresent("jakarta.ejb.TransactionAttribute", classLoader);
 	}
 
 	private final Set<TransactionAnnotationParser> annotationParsers;
@@ -83,13 +83,13 @@ public class AnnotationTransactionAttributeSource extends AbstractFallbackTransa
 	 * or the EJB3 {@link jakarta.ejb.TransactionAttribute} annotation.
 	 */
 	public AnnotationTransactionAttributeSource() {
-		if (jtaPresent || ejb3Present) {
+		if (JTA_PRESENT || EJB_3_PRESENT) {
 			this.annotationParsers = CollectionUtils.newLinkedHashSet(3);
 			this.annotationParsers.add(new SpringTransactionAnnotationParser());
-			if (jtaPresent) {
+			if (JTA_PRESENT) {
 				this.annotationParsers.add(new JtaTransactionAnnotationParser());
 			}
-			if (ejb3Present) {
+			if (EJB_3_PRESENT) {
 				this.annotationParsers.add(new Ejb3TransactionAnnotationParser());
 			}
 		}

spring-tx/src/main/java/org/springframework/transaction/interceptor/TransactionAspectSupport.java

@@ -104,13 +104,13 @@ public abstract class TransactionAspectSupport implements BeanFactoryAware, Init
 	/**
 	 * Reactive Streams API present on the classpath?
 	 */
-	private static final boolean reactiveStreamsPresent = ClassUtils.isPresent(
+	private static final boolean REACTIVE_STREAMS_PRESENT = ClassUtils.isPresent(
 			"org.reactivestreams.Publisher", TransactionAspectSupport.class.getClassLoader());
 
 	/**
 	 * Vavr library present on the classpath?
 	 */
-	private static final boolean vavrPresent = ClassUtils.isPresent(
+	private static final boolean VAVR_PRESENT = ClassUtils.isPresent(
 			"io.vavr.control.Try", TransactionAspectSupport.class.getClassLoader());
 
 	/**
@@ -187,7 +187,7 @@ public abstract class TransactionAspectSupport implements BeanFactoryAware, Init
 
 
 	protected TransactionAspectSupport() {
-		if (reactiveStreamsPresent) {
+		if (REACTIVE_STREAMS_PRESENT) {
 			this.reactiveAdapterRegistry = ReactiveAdapterRegistry.getSharedInstance();
 		}
 		else {
@@ -395,7 +395,7 @@ public abstract class TransactionAspectSupport implements BeanFactoryAware, Init
 							Thread.currentThread().interrupt();
 						}
 					}
-					else if (vavrPresent && VavrDelegate.isVavrTry(retVal)) {
+					else if (VAVR_PRESENT && VavrDelegate.isVavrTry(retVal)) {
 						// Set rollback-only in case of Vavr failure matching our rollback rules...
 						retVal = VavrDelegate.evaluateTryFailure(retVal, txAttr, status);
 					}
@@ -416,7 +416,7 @@ public abstract class TransactionAspectSupport implements BeanFactoryAware, Init
 					TransactionInfo txInfo = prepareTransactionInfo(ptm, txAttr, joinpointIdentification, status);
 					try {
 						Object retVal = invocation.proceedWithInvocation();
-						if (retVal != null && vavrPresent && VavrDelegate.isVavrTry(retVal)) {
+						if (retVal != null && VAVR_PRESENT && VavrDelegate.isVavrTry(retVal)) {
 							// Set rollback-only in case of Vavr failure matching our rollback rules...
 							retVal = VavrDelegate.evaluateTryFailure(retVal, txAttr, status);
 						}

spring-tx/src/main/java/org/springframework/transaction/reactive/TransactionSynchronizationUtils.java

@@ -42,7 +42,7 @@ abstract class TransactionSynchronizationUtils {
 
 	private static final Log logger = LogFactory.getLog(TransactionSynchronizationUtils.class);
 
-	private static final boolean aopPresent = ClassUtils.isPresent(
+	private static final boolean SPRING_AOP_PRESENT = ClassUtils.isPresent(
 			"org.springframework.aop.scope.ScopedObject", TransactionSynchronizationUtils.class.getClassLoader());
 
 
@@ -58,7 +58,7 @@ abstract class TransactionSynchronizationUtils {
 		if (resourceRef instanceof InfrastructureProxy infrastructureProxy) {
 			resourceRef = infrastructureProxy.getWrappedObject();
 		}
-		if (aopPresent) {
+		if (SPRING_AOP_PRESENT) {
 			// now unwrap scoped proxy
 			resourceRef = ScopedProxyUnwrapper.unwrapIfNecessary(resourceRef);
 		}

spring-tx/src/main/java/org/springframework/transaction/support/TransactionSynchronizationUtils.java

@@ -40,7 +40,7 @@ public abstract class TransactionSynchronizationUtils {
 
 	private static final Log logger = LogFactory.getLog(TransactionSynchronizationUtils.class);
 
-	private static final boolean aopPresent = ClassUtils.isPresent(
+	private static final boolean SPRING_AOP_PRESENT = ClassUtils.isPresent(
 			"org.springframework.aop.scope.ScopedObject", TransactionSynchronizationUtils.class.getClassLoader());
 
 
@@ -67,7 +67,7 @@ public abstract class TransactionSynchronizationUtils {
 		if (resourceRef instanceof InfrastructureProxy infrastructureProxy) {
 			resourceRef = infrastructureProxy.getWrappedObject();
 		}
-		if (aopPresent) {
+		if (SPRING_AOP_PRESENT) {
 			// now unwrap scoped proxy
 			resourceRef = ScopedProxyUnwrapper.unwrapIfNecessary(resourceRef);
 		}

spring-web/src/main/java/org/springframework/http/codec/support/BaseDefaultCodecs.java

@@ -89,39 +89,39 @@ import org.springframework.util.ObjectUtils;
  */
 class BaseDefaultCodecs implements CodecConfigurer.DefaultCodecs, CodecConfigurer.DefaultCodecConfig {
 
-	static final boolean jacksonPresent;
+	static final boolean JACKSON_PRESENT;
 
-	static final boolean jackson2Present;
+	static final boolean JACKSON_2_PRESENT;
 
-	private static final boolean jacksonSmilePresent;
+	private static final boolean JACKSON_SMILE_PRESENT;
 
-	private static final boolean jackson2SmilePresent;
+	private static final boolean JACKSON_2_SMILE_PRESENT;
 
-	private static final boolean jaxb2Present;
+	private static final boolean JAXB_2_PRESENT;
 
-	private static final boolean protobufPresent;
+	private static final boolean PROTOBUF_PRESENT;
 
-	static final boolean nettyByteBufPresent;
+	static final boolean NETTY_BYTE_BUF_PRESENT;
 
-	static final boolean kotlinSerializationCborPresent;
+	static final boolean KOTLIN_SERIALIZATION_CBOR_PRESENT;
 
-	static final boolean kotlinSerializationJsonPresent;
+	static final boolean KOTLIN_SERIALIZATION_JSON_PRESENT;
 
-	static final boolean kotlinSerializationProtobufPresent;
+	static final boolean KOTLIN_SERIALIZATION_PROTOBUF_PRESENT;
 
 	static {
 		ClassLoader classLoader = BaseCodecConfigurer.class.getClassLoader();
-		jacksonPresent = ClassUtils.isPresent("tools.jackson.databind.ObjectMapper", classLoader);
-		jackson2Present = ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", classLoader) &&
+		JACKSON_PRESENT = ClassUtils.isPresent("tools.jackson.databind.ObjectMapper", classLoader);
+		JACKSON_2_PRESENT = ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", classLoader) &&
 						ClassUtils.isPresent("com.fasterxml.jackson.core.JsonGenerator", classLoader);
-		jacksonSmilePresent = jacksonPresent && ClassUtils.isPresent("tools.jackson.dataformat.smile.SmileMapper", classLoader);
-		jackson2SmilePresent = jackson2Present && ClassUtils.isPresent("com.fasterxml.jackson.dataformat.smile.SmileFactory", classLoader);
-		jaxb2Present = ClassUtils.isPresent("jakarta.xml.bind.Binder", classLoader);
-		protobufPresent = ClassUtils.isPresent("com.google.protobuf.Message", classLoader);
-		nettyByteBufPresent = ClassUtils.isPresent("io.netty.buffer.ByteBuf", classLoader);
-		kotlinSerializationCborPresent = ClassUtils.isPresent("kotlinx.serialization.cbor.Cbor", classLoader);
-		kotlinSerializationJsonPresent = ClassUtils.isPresent("kotlinx.serialization.json.Json", classLoader);
-		kotlinSerializationProtobufPresent = ClassUtils.isPresent("kotlinx.serialization.protobuf.ProtoBuf", classLoader);
+		JACKSON_SMILE_PRESENT = JACKSON_PRESENT && ClassUtils.isPresent("tools.jackson.dataformat.smile.SmileMapper", classLoader);
+		JACKSON_2_SMILE_PRESENT = JACKSON_2_PRESENT && ClassUtils.isPresent("com.fasterxml.jackson.dataformat.smile.SmileFactory", classLoader);
+		JAXB_2_PRESENT = ClassUtils.isPresent("jakarta.xml.bind.Binder", classLoader);
+		PROTOBUF_PRESENT = ClassUtils.isPresent("com.google.protobuf.Message", classLoader);
+		NETTY_BYTE_BUF_PRESENT = ClassUtils.isPresent("io.netty.buffer.ByteBuf", classLoader);
+		KOTLIN_SERIALIZATION_CBOR_PRESENT = ClassUtils.isPresent("kotlinx.serialization.cbor.Cbor", classLoader);
+		KOTLIN_SERIALIZATION_JSON_PRESENT = ClassUtils.isPresent("kotlinx.serialization.json.Json", classLoader);
+		KOTLIN_SERIALIZATION_PROTOBUF_PRESENT = ClassUtils.isPresent("kotlinx.serialization.protobuf.ProtoBuf", classLoader);
 	}
 
 
@@ -448,12 +448,12 @@ class BaseDefaultCodecs implements CodecConfigurer.DefaultCodecs, CodecConfigure
 		addCodec(this.typedReaders, new DecoderHttpMessageReader<>(new ByteArrayDecoder()));
 		addCodec(this.typedReaders, new DecoderHttpMessageReader<>(new ByteBufferDecoder()));
 		addCodec(this.typedReaders, new DecoderHttpMessageReader<>(new DataBufferDecoder()));
-		if (nettyByteBufPresent) {
+		if (NETTY_BYTE_BUF_PRESENT) {
 			addCodec(this.typedReaders, new DecoderHttpMessageReader<>(new NettyByteBufDecoder()));
 		}
 		addCodec(this.typedReaders, new ResourceHttpMessageReader(new ResourceDecoder()));
 		addCodec(this.typedReaders, new DecoderHttpMessageReader<>(StringDecoder.textPlainOnly()));
-		if (protobufPresent) {
+		if (PROTOBUF_PRESENT) {
 			addCodec(this.typedReaders, new DecoderHttpMessageReader<>(this.protobufDecoder != null ?
 					(ProtobufDecoder) this.protobufDecoder : new ProtobufDecoder()));
 		}
@@ -506,37 +506,37 @@ class BaseDefaultCodecs implements CodecConfigurer.DefaultCodecs, CodecConfigure
 			}
 			// Pattern variables in the following if-blocks cannot be named the same as instance fields
 			// due to lacking support in Checkstyle: https://github.com/checkstyle/checkstyle/issues/10969
-			if (protobufPresent) {
+			if (PROTOBUF_PRESENT) {
 				if (codec instanceof ProtobufDecoder protobufDec) {
 					protobufDec.setMaxMessageSize(size);
 				}
 			}
-			if (kotlinSerializationCborPresent) {
+			if (KOTLIN_SERIALIZATION_CBOR_PRESENT) {
 				if (codec instanceof KotlinSerializationCborDecoder kotlinSerializationCborDec) {
 					kotlinSerializationCborDec.setMaxInMemorySize(size);
 				}
 			}
-			if (kotlinSerializationJsonPresent) {
+			if (KOTLIN_SERIALIZATION_JSON_PRESENT) {
 				if (codec instanceof KotlinSerializationJsonDecoder kotlinSerializationJsonDec) {
 					kotlinSerializationJsonDec.setMaxInMemorySize(size);
 				}
 			}
-			if (kotlinSerializationProtobufPresent) {
+			if (KOTLIN_SERIALIZATION_PROTOBUF_PRESENT) {
 				if (codec instanceof KotlinSerializationProtobufDecoder kotlinSerializationProtobufDec) {
 					kotlinSerializationProtobufDec.setMaxInMemorySize(size);
 				}
 			}
-			if (jacksonPresent) {
+			if (JACKSON_PRESENT) {
 				if (codec instanceof AbstractJacksonDecoder<?> abstractJacksonDecoder) {
 					abstractJacksonDecoder.setMaxInMemorySize(size);
 				}
 			}
-			if (jackson2Present) {
+			if (JACKSON_2_PRESENT) {
 				if (codec instanceof AbstractJackson2Decoder abstractJackson2Decoder) {
 					abstractJackson2Decoder.setMaxInMemorySize(size);
 				}
 			}
-			if (jaxb2Present) {
+			if (JAXB_2_PRESENT) {
 				if (codec instanceof Jaxb2XmlDecoder jaxb2XmlDecoder) {
 					jaxb2XmlDecoder.setMaxInMemorySize(size);
 				}
@@ -619,35 +619,35 @@ class BaseDefaultCodecs implements CodecConfigurer.DefaultCodecs, CodecConfigure
 		if (!this.registerDefaults) {
 			return;
 		}
-		if (kotlinSerializationCborPresent) {
+		if (KOTLIN_SERIALIZATION_CBOR_PRESENT) {
 			addCodec(this.objectReaders, new DecoderHttpMessageReader<>(this.kotlinSerializationCborDecoder != null ?
 					(KotlinSerializationCborDecoder) this.kotlinSerializationCborDecoder :
 					new KotlinSerializationCborDecoder()));
 		}
-		if (kotlinSerializationProtobufPresent) {
+		if (KOTLIN_SERIALIZATION_PROTOBUF_PRESENT) {
 			addCodec(this.objectReaders,
 					new DecoderHttpMessageReader<>(this.kotlinSerializationProtobufDecoder != null ?
 							(KotlinSerializationProtobufDecoder) this.kotlinSerializationProtobufDecoder :
 							new KotlinSerializationProtobufDecoder()));
 		}
-		if (jacksonPresent) {
+		if (JACKSON_PRESENT) {
 			addCodec(this.objectReaders, new DecoderHttpMessageReader<>(getJacksonJsonDecoder()));
 		}
-		else if (jackson2Present) {
+		else if (JACKSON_2_PRESENT) {
 			addCodec(this.objectReaders, new DecoderHttpMessageReader<>(getJackson2JsonDecoder()));
 		}
-		else if (kotlinSerializationJsonPresent) {
+		else if (KOTLIN_SERIALIZATION_JSON_PRESENT) {
 			addCodec(this.objectReaders, new DecoderHttpMessageReader<>(getKotlinSerializationJsonDecoder()));
 		}
-		if (jacksonSmilePresent) {
+		if (JACKSON_SMILE_PRESENT) {
 			addCodec(this.objectReaders, new DecoderHttpMessageReader<>(this.jacksonSmileDecoder != null ?
 					(JacksonSmileDecoder) this.jacksonSmileDecoder : new JacksonSmileDecoder()));
 		}
-		else if (jackson2SmilePresent) {
+		else if (JACKSON_2_SMILE_PRESENT) {
 			addCodec(this.objectReaders, new DecoderHttpMessageReader<>(this.jackson2SmileDecoder != null ?
 					(Jackson2SmileDecoder) this.jackson2SmileDecoder : new Jackson2SmileDecoder()));
 		}
-		if (jaxb2Present) {
+		if (JAXB_2_PRESENT) {
 			addCodec(this.objectReaders, new DecoderHttpMessageReader<>(this.jaxb2Decoder != null ?
 					(Jaxb2XmlDecoder) this.jaxb2Decoder : new Jaxb2XmlDecoder()));
 		}
@@ -705,12 +705,12 @@ class BaseDefaultCodecs implements CodecConfigurer.DefaultCodecs, CodecConfigure
 		addCodec(writers, new EncoderHttpMessageWriter<>(new ByteArrayEncoder()));
 		addCodec(writers, new EncoderHttpMessageWriter<>(new ByteBufferEncoder()));
 		addCodec(writers, new EncoderHttpMessageWriter<>(new DataBufferEncoder()));
-		if (nettyByteBufPresent) {
+		if (NETTY_BYTE_BUF_PRESENT) {
 			addCodec(writers, new EncoderHttpMessageWriter<>(new NettyByteBufEncoder()));
 		}
 		addCodec(writers, new ResourceHttpMessageWriter());
 		addCodec(writers, new EncoderHttpMessageWriter<>(CharSequenceEncoder.textPlainOnly()));
-		if (protobufPresent) {
+		if (PROTOBUF_PRESENT) {
 			addCodec(writers, new ProtobufHttpMessageWriter(this.protobufEncoder != null ?
 					(ProtobufEncoder) this.protobufEncoder : new ProtobufEncoder()));
 		}
@@ -765,34 +765,34 @@ class BaseDefaultCodecs implements CodecConfigurer.DefaultCodecs, CodecConfigure
 	@SuppressWarnings("removal")
 	final List<HttpMessageWriter<?>> getBaseObjectWriters() {
 		List<HttpMessageWriter<?>> writers = new ArrayList<>();
-		if (kotlinSerializationCborPresent) {
+		if (KOTLIN_SERIALIZATION_CBOR_PRESENT) {
 			addCodec(writers, new EncoderHttpMessageWriter<>(this.kotlinSerializationCborEncoder != null ?
 					(KotlinSerializationCborEncoder) this.kotlinSerializationCborEncoder :
 					new KotlinSerializationCborEncoder()));
 		}
-		if (kotlinSerializationProtobufPresent) {
+		if (KOTLIN_SERIALIZATION_PROTOBUF_PRESENT) {
 			addCodec(writers, new EncoderHttpMessageWriter<>(this.kotlinSerializationProtobufEncoder != null ?
 					(KotlinSerializationProtobufEncoder) this.kotlinSerializationProtobufEncoder :
 					new KotlinSerializationProtobufEncoder()));
 		}
-		if (jacksonPresent) {
+		if (JACKSON_PRESENT) {
 			addCodec(writers, new EncoderHttpMessageWriter<>(getJacksonJsonEncoder()));
 		}
-		else if (jackson2Present) {
+		else if (JACKSON_2_PRESENT) {
 			addCodec(writers, new EncoderHttpMessageWriter<>(getJackson2JsonEncoder()));
 		}
-		else if (kotlinSerializationJsonPresent) {
+		else if (KOTLIN_SERIALIZATION_JSON_PRESENT) {
 			addCodec(writers, new EncoderHttpMessageWriter<>(getKotlinSerializationJsonEncoder()));
 		}
-		if (jacksonSmilePresent) {
+		if (JACKSON_SMILE_PRESENT) {
 			addCodec(writers, new EncoderHttpMessageWriter<>(this.jacksonSmileEncoder != null ?
 					(JacksonSmileEncoder) this.jacksonSmileEncoder : new JacksonSmileEncoder()));
 		}
-		else if (jackson2SmilePresent) {
+		else if (JACKSON_2_SMILE_PRESENT) {
 			addCodec(writers, new EncoderHttpMessageWriter<>(this.jackson2SmileEncoder != null ?
 					(Jackson2SmileEncoder) this.jackson2SmileEncoder : new Jackson2SmileEncoder()));
 		}
-		if (jaxb2Present) {
+		if (JAXB_2_PRESENT) {
 			addCodec(writers, new EncoderHttpMessageWriter<>(this.jaxb2Encoder != null ?
 					(Jaxb2XmlEncoder) this.jaxb2Encoder : new Jaxb2XmlEncoder()));
 		}

spring-web/src/main/java/org/springframework/http/codec/support/ClientDefaultCodecsImpl.java

@@ -53,9 +53,9 @@ class ClientDefaultCodecsImpl extends BaseDefaultCodecs implements ClientCodecCo
 	protected void extendObjectReaders(List<HttpMessageReader<?>> objectReaders) {
 
 		Decoder<?> decoder = (this.sseDecoder != null ? this.sseDecoder :
-				jacksonPresent ? getJacksonJsonDecoder() :
-				jackson2Present ? getJackson2JsonDecoder() :
-				kotlinSerializationJsonPresent ? getKotlinSerializationJsonDecoder() :
+				JACKSON_PRESENT ? getJacksonJsonDecoder() :
+				JACKSON_2_PRESENT ? getJackson2JsonDecoder() :
+				KOTLIN_SERIALIZATION_JSON_PRESENT ? getKotlinSerializationJsonDecoder() :
 				null);
 
 		addCodec(objectReaders, new ServerSentEventHttpMessageReader(decoder));

spring-web/src/main/java/org/springframework/http/codec/support/ServerDefaultCodecsImpl.java

@@ -57,9 +57,9 @@ class ServerDefaultCodecsImpl extends BaseDefaultCodecs implements ServerCodecCo
 
 	private @Nullable Encoder<?> getSseEncoder() {
 		return this.sseEncoder != null ? this.sseEncoder :
-				jacksonPresent ? getJacksonJsonEncoder() :
-				jackson2Present ? getJackson2JsonEncoder() :
-				kotlinSerializationJsonPresent ? getKotlinSerializationJsonEncoder() :
+				JACKSON_PRESENT ? getJacksonJsonEncoder() :
+				JACKSON_2_PRESENT ? getJackson2JsonEncoder() :
+				KOTLIN_SERIALIZATION_JSON_PRESENT ? getKotlinSerializationJsonEncoder() :
 				null;
 	}
 

spring-web/src/main/java/org/springframework/http/codec/xml/XmlEventDecoder.java

@@ -86,10 +86,10 @@ public class XmlEventDecoder extends AbstractDecoder<XMLEvent> {
 
 	private static final XMLInputFactory inputFactory = StaxUtils.createDefensiveInputFactory();
 
-	private static final boolean aaltoPresent = ClassUtils.isPresent(
+	private static final boolean AALTO_PRESENT = ClassUtils.isPresent(
 			"com.fasterxml.aalto.AsyncXMLStreamReader", XmlEventDecoder.class.getClassLoader());
 
-	boolean useAalto = aaltoPresent;
+	boolean useAalto = AALTO_PRESENT;
 
 	private int maxInMemorySize = 256 * 1024;
 

spring-web/src/main/java/org/springframework/http/converter/DefaultHttpMessageConverters.java

@@ -68,39 +68,39 @@ class DefaultHttpMessageConverters implements HttpMessageConverters {
 
 	abstract static class DefaultBuilder {
 
-		private static final boolean isJacksonPresent;
+		private static final boolean JACKSON_PRESENT;
 
-		private static final boolean isJackson2Present;
+		private static final boolean JACKSON_2_PRESENT;
 
-		private static final boolean isGsonPresent;
+		private static final boolean GSON_PRESENT;
 
-		private static final boolean isJsonbPresent;
+		private static final boolean JSONB_PRESENT;
 
-		private static final boolean isKotlinSerializationJsonPresent;
+		private static final boolean KOTLIN_SERIALIZATION_JSON_PRESENT;
 
-		private static final boolean isJacksonXmlPresent;
+		private static final boolean JACKSON_XML_PRESENT;
 
-		private static final boolean isJackson2XmlPresent;
+		private static final boolean JACKSON_2_XML_PRESENT;
 
-		private static final boolean isJaxb2Present;
+		private static final boolean JAXB_2_PRESENT;
 
-		private static final boolean isJacksonSmilePresent;
+		private static final boolean JACKSON_SMILE_PRESENT;
 
-		private static final boolean isJackson2SmilePresent;
+		private static final boolean JACKSON_2_SMILE_PRESENT;
 
-		private static final boolean isJacksonCborPresent;
+		private static final boolean JACKSON_CBOR_PRESENT;
 
-		private static final boolean isJackson2CborPresent;
+		private static final boolean JACKSON_2_CBOR_PRESENT;
 
-		private static final boolean isKotlinSerializationCborPresent;
+		private static final boolean KOTLIN_SERIALIZATION_CBOR_PRESENT;
 
-		private static final boolean isJacksonYamlPresent;
+		private static final boolean JACKSON_YAML_PRESENT;
 
-		private static final boolean isJackson2YamlPresent;
+		private static final boolean JACKSON_2_YAML_PRESENT;
 
-		private static final boolean isKotlinSerializationProtobufPresent;
+		private static final boolean KOTLIN_SERIALIZATION_PROTOBUF_PRESENT;
 
-		private static final boolean isRomePresent;
+		private static final boolean ROME_PRESENT;
 
 		boolean registerDefaults;
 
@@ -135,24 +135,24 @@ class DefaultHttpMessageConverters implements HttpMessageConverters {
 
 		static {
 			ClassLoader classLoader = DefaultBuilder.class.getClassLoader();
-			isJacksonPresent = ClassUtils.isPresent("tools.jackson.databind.ObjectMapper", classLoader);
-			isJackson2Present = ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", classLoader) &&
+			JACKSON_PRESENT = ClassUtils.isPresent("tools.jackson.databind.ObjectMapper", classLoader);
+			JACKSON_2_PRESENT = ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", classLoader) &&
 						ClassUtils.isPresent("com.fasterxml.jackson.core.JsonGenerator", classLoader);
-			isGsonPresent = ClassUtils.isPresent("com.google.gson.Gson", classLoader);
-			isJsonbPresent = ClassUtils.isPresent("jakarta.json.bind.Jsonb", classLoader);
-			isKotlinSerializationJsonPresent = ClassUtils.isPresent("kotlinx.serialization.json.Json", classLoader);
-			isJacksonSmilePresent = isJacksonPresent && ClassUtils.isPresent("tools.jackson.dataformat.smile.SmileMapper", classLoader);
-			isJackson2SmilePresent = ClassUtils.isPresent("com.fasterxml.jackson.dataformat.smile.SmileFactory", classLoader);
-			isJaxb2Present = ClassUtils.isPresent("jakarta.xml.bind.Binder", classLoader);
-			isJacksonXmlPresent = isJacksonPresent && ClassUtils.isPresent("tools.jackson.dataformat.xml.XmlMapper", classLoader);
-			isJackson2XmlPresent = ClassUtils.isPresent("com.fasterxml.jackson.dataformat.xml.XmlMapper", classLoader);
-			isJacksonCborPresent = isJacksonPresent && ClassUtils.isPresent("tools.jackson.dataformat.cbor.CBORMapper", classLoader);
-			isJackson2CborPresent = ClassUtils.isPresent("com.fasterxml.jackson.dataformat.cbor.CBORFactory", classLoader);
-			isJacksonYamlPresent = isJacksonPresent && ClassUtils.isPresent("tools.jackson.dataformat.yaml.YAMLMapper", classLoader);
-			isJackson2YamlPresent = ClassUtils.isPresent("com.fasterxml.jackson.dataformat.yaml.YAMLFactory", classLoader);
-			isKotlinSerializationCborPresent = ClassUtils.isPresent("kotlinx.serialization.cbor.Cbor", classLoader);
-			isKotlinSerializationProtobufPresent = ClassUtils.isPresent("kotlinx.serialization.protobuf.ProtoBuf", classLoader);
-			isRomePresent = ClassUtils.isPresent("com.rometools.rome.feed.WireFeed", classLoader);
+			GSON_PRESENT = ClassUtils.isPresent("com.google.gson.Gson", classLoader);
+			JSONB_PRESENT = ClassUtils.isPresent("jakarta.json.bind.Jsonb", classLoader);
+			KOTLIN_SERIALIZATION_JSON_PRESENT = ClassUtils.isPresent("kotlinx.serialization.json.Json", classLoader);
+			JACKSON_SMILE_PRESENT = JACKSON_PRESENT && ClassUtils.isPresent("tools.jackson.dataformat.smile.SmileMapper", classLoader);
+			JACKSON_2_SMILE_PRESENT = ClassUtils.isPresent("com.fasterxml.jackson.dataformat.smile.SmileFactory", classLoader);
+			JAXB_2_PRESENT = ClassUtils.isPresent("jakarta.xml.bind.Binder", classLoader);
+			JACKSON_XML_PRESENT = JACKSON_PRESENT && ClassUtils.isPresent("tools.jackson.dataformat.xml.XmlMapper", classLoader);
+			JACKSON_2_XML_PRESENT = ClassUtils.isPresent("com.fasterxml.jackson.dataformat.xml.XmlMapper", classLoader);
+			JACKSON_CBOR_PRESENT = JACKSON_PRESENT && ClassUtils.isPresent("tools.jackson.dataformat.cbor.CBORMapper", classLoader);
+			JACKSON_2_CBOR_PRESENT = ClassUtils.isPresent("com.fasterxml.jackson.dataformat.cbor.CBORFactory", classLoader);
+			JACKSON_YAML_PRESENT = JACKSON_PRESENT && ClassUtils.isPresent("tools.jackson.dataformat.yaml.YAMLMapper", classLoader);
+			JACKSON_2_YAML_PRESENT = ClassUtils.isPresent("com.fasterxml.jackson.dataformat.yaml.YAMLFactory", classLoader);
+			KOTLIN_SERIALIZATION_CBOR_PRESENT = ClassUtils.isPresent("kotlinx.serialization.cbor.Cbor", classLoader);
+			KOTLIN_SERIALIZATION_PROTOBUF_PRESENT = ClassUtils.isPresent("kotlinx.serialization.protobuf.ProtoBuf", classLoader);
+			ROME_PRESENT = ClassUtils.isPresent("com.rometools.rome.feed.WireFeed", classLoader);
 		}
 
 
@@ -250,72 +250,72 @@ class DefaultHttpMessageConverters implements HttpMessageConverters {
 			this.stringMessageConverter = new StringHttpMessageConverter();
 
 			if (this.jsonMessageConverter == null) {
-				if (isJacksonPresent) {
+				if (JACKSON_PRESENT) {
 					this.jsonMessageConverter = new JacksonJsonHttpMessageConverter();
 				}
-				else if (isJackson2Present) {
+				else if (JACKSON_2_PRESENT) {
 					this.jsonMessageConverter = new MappingJackson2HttpMessageConverter();
 				}
-				else if (isGsonPresent) {
+				else if (GSON_PRESENT) {
 					this.jsonMessageConverter = new GsonHttpMessageConverter();
 				}
-				else if (isJsonbPresent) {
+				else if (JSONB_PRESENT) {
 					this.jsonMessageConverter = new JsonbHttpMessageConverter();
 				}
-				else if (isKotlinSerializationJsonPresent) {
+				else if (KOTLIN_SERIALIZATION_JSON_PRESENT) {
 					this.jsonMessageConverter = new KotlinSerializationJsonHttpMessageConverter();
 				}
 			}
 
 			if (this.xmlMessageConverter == null) {
-				if (isJacksonXmlPresent) {
+				if (JACKSON_XML_PRESENT) {
 					this.xmlMessageConverter = new JacksonXmlHttpMessageConverter();
 				}
-				else if (isJackson2XmlPresent) {
+				else if (JACKSON_2_XML_PRESENT) {
 					this.xmlMessageConverter = new MappingJackson2XmlHttpMessageConverter();
 				}
-				else if (isJaxb2Present) {
+				else if (JAXB_2_PRESENT) {
 					this.xmlMessageConverter = new Jaxb2RootElementHttpMessageConverter();
 				}
 			}
 
 			if (this.smileMessageConverter == null) {
-				if (isJacksonSmilePresent) {
+				if (JACKSON_SMILE_PRESENT) {
 					this.smileMessageConverter = new JacksonSmileHttpMessageConverter();
 				}
-				else if (isJackson2SmilePresent) {
+				else if (JACKSON_2_SMILE_PRESENT) {
 					this.smileMessageConverter = new MappingJackson2SmileHttpMessageConverter();
 				}
 			}
 
 			if (this.cborMessageConverter == null) {
-				if (isJacksonCborPresent) {
+				if (JACKSON_CBOR_PRESENT) {
 					this.cborMessageConverter = new JacksonCborHttpMessageConverter();
 				}
-				else if (isJackson2CborPresent) {
+				else if (JACKSON_2_CBOR_PRESENT) {
 					this.cborMessageConverter = new MappingJackson2CborHttpMessageConverter();
 				}
-				else if (isKotlinSerializationCborPresent) {
+				else if (KOTLIN_SERIALIZATION_CBOR_PRESENT) {
 					this.cborMessageConverter = new KotlinSerializationCborHttpMessageConverter();
 				}
 			}
 
 			if (this.yamlMessageConverter == null) {
-				if (isJacksonYamlPresent) {
+				if (JACKSON_YAML_PRESENT) {
 					this.yamlMessageConverter = new JacksonYamlHttpMessageConverter();
 				}
-				else if (isJackson2YamlPresent) {
+				else if (JACKSON_2_YAML_PRESENT) {
 					this.yamlMessageConverter = new MappingJackson2YamlHttpMessageConverter();
 				}
 			}
 
 			if (this.protobufMessageConverter == null) {
-				if (isKotlinSerializationProtobufPresent) {
+				if (KOTLIN_SERIALIZATION_PROTOBUF_PRESENT) {
 					this.protobufMessageConverter = new KotlinSerializationProtobufHttpMessageConverter();
 				}
 			}
 
-			if (isRomePresent) {
+			if (ROME_PRESENT) {
 				if (this.atomMessageConverter == null) {
 					this.atomMessageConverter = new AtomFeedHttpMessageConverter();
 				}

spring-web/src/main/java/org/springframework/http/converter/json/Jackson2ObjectMapperBuilder.java

@@ -106,7 +106,7 @@ import org.springframework.util.xml.StaxUtils;
 @SuppressWarnings("removal")
 public class Jackson2ObjectMapperBuilder {
 
-	private static final boolean jackson2XmlPresent = ClassUtils.isPresent(
+	private static final boolean JACKSON_2_XML_PRESENT = ClassUtils.isPresent(
 			"com.fasterxml.jackson.dataformat.xml.XmlMapper", Jackson2ObjectMapperBuilder.class.getClassLoader());
 
 
@@ -747,7 +747,7 @@ public class Jackson2ObjectMapperBuilder {
 			objectMapper.setFilterProvider(this.filters);
 		}
 
-		if (jackson2XmlPresent) {
+		if (JACKSON_2_XML_PRESENT) {
 			objectMapper.addMixIn(ProblemDetail.class, ProblemDetailJacksonXmlMixin.class);
 		}
 		else {

spring-web/src/main/java/org/springframework/http/converter/protobuf/ProtobufHttpMessageConverter.java

@@ -97,7 +97,8 @@ public class ProtobufHttpMessageConverter extends AbstractHttpMessageConverter<M
 	 */
 	public static final String X_PROTOBUF_MESSAGE_HEADER = "X-Protobuf-Message";
 
-	private static final boolean protobufJsonFormatPresent = ClassUtils.isPresent("com.google.protobuf.util.JsonFormat", ProtobufHttpMessageConverter.class.getClassLoader());
+	private static final boolean PROTOBUF_JSON_FORMAT_PRESENT =
+			ClassUtils.isPresent("com.google.protobuf.util.JsonFormat", ProtobufHttpMessageConverter.class.getClassLoader());
 
 	private static final Map<Class<?>, Method> methodCache = new ConcurrentReferenceHashMap<>();
 
@@ -129,7 +130,7 @@ public class ProtobufHttpMessageConverter extends AbstractHttpMessageConverter<M
 		if (formatSupport != null) {
 			this.protobufFormatSupport = formatSupport;
 		}
-		else if (protobufJsonFormatPresent) {
+		else if (PROTOBUF_JSON_FORMAT_PRESENT) {
 			this.protobufFormatSupport = new ProtobufJavaUtilSupport(null, null);
 		}
 		else {

spring-web/src/main/java/org/springframework/web/client/DefaultRestClientBuilder.java

@@ -66,21 +66,21 @@ final class DefaultRestClientBuilder implements RestClient.Builder {
 
 	// request factories
 
-	private static final boolean httpComponentsClientPresent;
+	private static final boolean HTTP_COMPONENTS_CLIENT_PRESENT;
 
-	private static final boolean jettyClientPresent;
+	private static final boolean JETTY_CLIENT_PRESENT;
 
-	private static final boolean reactorNettyClientPresent;
+	private static final boolean REACTOR_NETTY_CLIENT_PRESENT;
 
-	private static final boolean jdkClientPresent;
+	private static final boolean JDK_CLIENT_PRESENT;
 
 	static {
 		ClassLoader loader = DefaultRestClientBuilder.class.getClassLoader();
 
-		httpComponentsClientPresent = ClassUtils.isPresent("org.apache.hc.client5.http.classic.HttpClient", loader);
-		jettyClientPresent = ClassUtils.isPresent("org.eclipse.jetty.client.HttpClient", loader);
-		reactorNettyClientPresent = ClassUtils.isPresent("reactor.netty.http.client.HttpClient", loader);
-		jdkClientPresent = ClassUtils.isPresent("java.net.http.HttpClient", loader);
+		HTTP_COMPONENTS_CLIENT_PRESENT = ClassUtils.isPresent("org.apache.hc.client5.http.classic.HttpClient", loader);
+		JETTY_CLIENT_PRESENT = ClassUtils.isPresent("org.eclipse.jetty.client.HttpClient", loader);
+		REACTOR_NETTY_CLIENT_PRESENT = ClassUtils.isPresent("reactor.netty.http.client.HttpClient", loader);
+		JDK_CLIENT_PRESENT = ClassUtils.isPresent("java.net.http.HttpClient", loader);
 	}
 
 	private @Nullable String baseUrl;
@@ -449,16 +449,16 @@ final class DefaultRestClientBuilder implements RestClient.Builder {
 		if (this.requestFactory != null) {
 			return this.requestFactory;
 		}
-		else if (httpComponentsClientPresent) {
+		else if (HTTP_COMPONENTS_CLIENT_PRESENT) {
 			return new HttpComponentsClientHttpRequestFactory();
 		}
-		else if (jettyClientPresent) {
+		else if (JETTY_CLIENT_PRESENT) {
 			return new JettyClientHttpRequestFactory();
 		}
-		else if (reactorNettyClientPresent) {
+		else if (REACTOR_NETTY_CLIENT_PRESENT) {
 			return new ReactorClientHttpRequestFactory();
 		}
-		else if (jdkClientPresent) {
+		else if (JDK_CLIENT_PRESENT) {
 			// java.net.http module might not be loaded, so we can't default to the JDK HttpClient
 			return new JdkClientHttpRequestFactory();
 		}

spring-web/src/main/java/org/springframework/web/context/request/RequestContextHolder.java

@@ -44,7 +44,7 @@ import org.springframework.util.ClassUtils;
  */
 public abstract class RequestContextHolder {
 
-	private static final boolean jsfPresent =
+	private static final boolean JSF_PRESENT =
 			ClassUtils.isPresent("jakarta.faces.context.FacesContext", RequestContextHolder.class.getClassLoader());
 
 	private static final ThreadLocal<RequestAttributes> requestAttributesHolder =
@@ -123,7 +123,7 @@ public abstract class RequestContextHolder {
 	public static RequestAttributes currentRequestAttributes() throws IllegalStateException {
 		RequestAttributes attributes = getRequestAttributes();
 		if (attributes == null) {
-			if (jsfPresent) {
+			if (JSF_PRESENT) {
 				attributes = FacesRequestAttributesFactory.getFacesRequestAttributes();
 			}
 			if (attributes == null) {

spring-web/src/main/java/org/springframework/web/context/support/StandardServletEnvironment.java

@@ -57,7 +57,7 @@ public class StandardServletEnvironment extends StandardEnvironment implements C
 
 
 	// Defensive reference to JNDI API for JDK 9+ (optional java.naming module)
-	private static final boolean jndiPresent = ClassUtils.isPresent(
+	private static final boolean JNDI_PRESENT = ClassUtils.isPresent(
 			"javax.naming.InitialContext", StandardServletEnvironment.class.getClassLoader());
 
 
@@ -109,7 +109,7 @@ public class StandardServletEnvironment extends StandardEnvironment implements C
 	protected void customizePropertySources(MutablePropertySources propertySources) {
 		propertySources.addLast(new StubPropertySource(SERVLET_CONFIG_PROPERTY_SOURCE_NAME));
 		propertySources.addLast(new StubPropertySource(SERVLET_CONTEXT_PROPERTY_SOURCE_NAME));
-		if (jndiPresent && JndiLocatorDelegate.isDefaultJndiEnvironmentAvailable()) {
+		if (JNDI_PRESENT && JndiLocatorDelegate.isDefaultJndiEnvironmentAvailable()) {
 			propertySources.addLast(new JndiPropertySource(JNDI_PROPERTY_SOURCE_NAME));
 		}
 		super.customizePropertySources(propertySources);

spring-web/src/main/java/org/springframework/web/context/support/WebApplicationContextUtils.java

@@ -65,7 +65,7 @@ import org.springframework.web.context.request.WebRequest;
  */
 public abstract class WebApplicationContextUtils {
 
-	private static final boolean jsfPresent =
+	private static final boolean JSF_PRESENT =
 			ClassUtils.isPresent("jakarta.faces.context.FacesContext", RequestContextHolder.class.getClassLoader());
 
 
@@ -193,7 +193,7 @@ public abstract class WebApplicationContextUtils {
 		beanFactory.registerResolvableDependency(ServletResponse.class, new ResponseObjectFactory());
 		beanFactory.registerResolvableDependency(HttpSession.class, new SessionObjectFactory());
 		beanFactory.registerResolvableDependency(WebRequest.class, new WebRequestObjectFactory());
-		if (jsfPresent) {
+		if (JSF_PRESENT) {
 			FacesDependencyRegistrar.registerFacesDependencies(beanFactory);
 		}
 	}

spring-webflux/src/main/java/org/springframework/web/reactive/config/ResourceChainRegistration.java

@@ -44,7 +44,7 @@ public class ResourceChainRegistration {
 
 	private static final String DEFAULT_CACHE_NAME = "spring-resource-chain-cache";
 
-	private static final boolean webJarsPresent = ClassUtils.isPresent(
+	private static final boolean WEB_JARS_PRESENT = ClassUtils.isPresent(
 			"org.webjars.WebJarVersionLocator", ResourceChainRegistration.class.getClassLoader());
 
 
@@ -113,7 +113,7 @@ public class ResourceChainRegistration {
 	protected List<ResourceResolver> getResourceResolvers() {
 		if (!this.hasPathResolver) {
 			List<ResourceResolver> result = new ArrayList<>(this.resolvers);
-			if (webJarsPresent && !this.hasWebjarsResolver) {
+			if (WEB_JARS_PRESENT && !this.hasWebjarsResolver) {
 				result.add(new LiteWebJarsResourceResolver());
 			}
 			result.add(new PathResourceResolver());

spring-webflux/src/main/java/org/springframework/web/reactive/config/WebFluxConfigurationSupport.java

@@ -88,7 +88,7 @@ import org.springframework.web.server.i18n.LocaleContextResolver;
  */
 public class WebFluxConfigurationSupport implements ApplicationContextAware {
 
-	private static final boolean jakartaValidatorPresent =
+	private static final boolean BEAN_VALIDATION_PRESENT =
 			ClassUtils.isPresent("jakarta.validation.Validator", WebFluxConfigurationSupport.class.getClassLoader());
 
 
@@ -429,7 +429,7 @@ public class WebFluxConfigurationSupport implements ApplicationContextAware {
 	public Validator webFluxValidator() {
 		Validator validator = getValidator();
 		if (validator == null) {
-			if (jakartaValidatorPresent) {
+			if (BEAN_VALIDATION_PRESENT) {
 				try {
 					validator = new OptionalValidatorFactoryBean();
 				}

spring-webflux/src/main/java/org/springframework/web/reactive/function/client/DefaultWebClientBuilder.java

@@ -55,17 +55,17 @@ import org.springframework.web.util.UriBuilderFactory;
  */
 final class DefaultWebClientBuilder implements WebClient.Builder {
 
-	private static final boolean reactorNettyClientPresent;
+	private static final boolean REACTOR_NETTY_CLIENT_PRESENT;
 
-	private static final boolean jettyClientPresent;
+	private static final boolean JETTY_CLIENT_PRESENT;
 
-	private static final boolean httpComponentsClientPresent;
+	private static final boolean HTTP_COMPONENTS_CLIENT_PRESENT;
 
 	static {
 		ClassLoader loader = DefaultWebClientBuilder.class.getClassLoader();
-		reactorNettyClientPresent = ClassUtils.isPresent("reactor.netty.http.client.HttpClient", loader);
-		jettyClientPresent = ClassUtils.isPresent("org.eclipse.jetty.client.HttpClient", loader);
-		httpComponentsClientPresent =
+		REACTOR_NETTY_CLIENT_PRESENT = ClassUtils.isPresent("reactor.netty.http.client.HttpClient", loader);
+		JETTY_CLIENT_PRESENT = ClassUtils.isPresent("org.eclipse.jetty.client.HttpClient", loader);
+		HTTP_COMPONENTS_CLIENT_PRESENT =
 				ClassUtils.isPresent("org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient", loader) &&
 						ClassUtils.isPresent("org.apache.hc.core5.reactive.ReactiveDataConsumer", loader);
 	}
@@ -325,13 +325,13 @@ final class DefaultWebClientBuilder implements WebClient.Builder {
 	}
 
 	private ClientHttpConnector initConnector() {
-		if (reactorNettyClientPresent) {
+		if (REACTOR_NETTY_CLIENT_PRESENT) {
 			return new ReactorClientHttpConnector();
 		}
-		else if (jettyClientPresent) {
+		else if (JETTY_CLIENT_PRESENT) {
 			return new JettyClientHttpConnector();
 		}
-		else if (httpComponentsClientPresent) {
+		else if (HTTP_COMPONENTS_CLIENT_PRESENT) {
 			return new HttpComponentsClientHttpConnector();
 		}
 		else {

spring-webflux/src/main/java/org/springframework/web/reactive/socket/server/support/HandshakeWebSocketService.java

@@ -74,19 +74,19 @@ public class HandshakeWebSocketService implements WebSocketService, Lifecycle {
 	private static final Mono<Map<String, Object>> EMPTY_ATTRIBUTES = Mono.just(Collections.emptyMap());
 
 
-	private static final boolean jettyWsPresent;
+	private static final boolean JETTY_WS_PRESENT;
 
-	private static final boolean jettyCoreWsPresent;
+	private static final boolean JETTY_CORE_WS_PRESENT;
 
-	private static final boolean reactorNettyPresent;
+	private static final boolean REACTOR_NETTY_PRESENT;
 
 	static {
 		ClassLoader classLoader = HandshakeWebSocketService.class.getClassLoader();
-		jettyWsPresent = ClassUtils.isPresent(
+		JETTY_WS_PRESENT = ClassUtils.isPresent(
 				"org.eclipse.jetty.ee11.websocket.server.JettyWebSocketServerContainer", classLoader);
-		jettyCoreWsPresent = ClassUtils.isPresent(
+		JETTY_CORE_WS_PRESENT = ClassUtils.isPresent(
 				"org.eclipse.jetty.websocket.server.ServerWebSocketContainer", classLoader);
-		reactorNettyPresent = ClassUtils.isPresent(
+		REACTOR_NETTY_PRESENT = ClassUtils.isPresent(
 				"reactor.netty.http.server.HttpServerResponse", classLoader);
 	}
 
@@ -265,13 +265,13 @@ public class HandshakeWebSocketService implements WebSocketService, Lifecycle {
 
 
 	static RequestUpgradeStrategy initUpgradeStrategy() {
-		if (jettyWsPresent) {
+		if (JETTY_WS_PRESENT) {
 			return new JettyRequestUpgradeStrategy();
 		}
-		else if (jettyCoreWsPresent) {
+		else if (JETTY_CORE_WS_PRESENT) {
 			return new JettyCoreRequestUpgradeStrategy();
 		}
-		else if (reactorNettyPresent) {
+		else if (REACTOR_NETTY_PRESENT) {
 			return new ReactorNettyRequestUpgradeStrategy();
 		}
 		else {

spring-webmvc/src/main/java/org/springframework/web/servlet/config/AnnotationDrivenBeanDefinitionParser.java

@@ -168,51 +168,51 @@ class AnnotationDrivenBeanDefinitionParser implements BeanDefinitionParser {
 	public static final String CONTENT_NEGOTIATION_MANAGER_BEAN_NAME = "mvcContentNegotiationManager";
 
 
-	private static final boolean javaxValidationPresent;
+	private static final boolean BEAN_VALIDATION_PRESENT;
 
-	private static final boolean romePresent;
+	private static final boolean ROME_PRESENT;
 
-	private static final boolean jaxb2Present;
+	private static final boolean JAXB_2_PRESENT;
 
-	private static final boolean jacksonPresent;
+	private static final boolean JACKSON_PRESENT;
 
-	private static final boolean jackson2Present;
+	private static final boolean JACKSON_2_PRESENT;
 
-	private static final boolean jacksonXmlPresent;
+	private static final boolean JACKSON_XML_PRESENT;
 
-	private static final boolean jackson2XmlPresent;
+	private static final boolean JACKSON_2_XML_PRESENT;
 
-	private static final boolean jacksonSmilePresent;
+	private static final boolean JACKSON_SMILE_PRESENT;
 
-	private static final boolean jackson2SmilePresent;
+	private static final boolean JACKSON_2_SMILE_PRESENT;
 
-	private static final boolean jacksonCborPresent;
+	private static final boolean JACKSON_CBOR_PRESENT;
 
-	private static final boolean jackson2CborPresent;
+	private static final boolean JACKSON_2_CBOR_PRESENT;
 
-	private static final boolean jacksonYamlPresent;
+	private static final boolean JACKSON_YAML_PRESENT;
 
-	private static final boolean jackson2YamlPresent;
+	private static final boolean JACKSON_2_YAML_PRESENT;
 
-	private static final boolean gsonPresent;
+	private static final boolean GSON_PRESENT;
 
 	static {
 		ClassLoader classLoader = AnnotationDrivenBeanDefinitionParser.class.getClassLoader();
-		javaxValidationPresent = ClassUtils.isPresent("jakarta.validation.Validator", classLoader);
-		romePresent = ClassUtils.isPresent("com.rometools.rome.feed.WireFeed", classLoader);
-		jaxb2Present = ClassUtils.isPresent("jakarta.xml.bind.Binder", classLoader);
-		jacksonPresent = ClassUtils.isPresent("tools.jackson.databind.ObjectMapper", classLoader);
-		jackson2Present = ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", classLoader) &&
+		BEAN_VALIDATION_PRESENT = ClassUtils.isPresent("jakarta.validation.Validator", classLoader);
+		ROME_PRESENT = ClassUtils.isPresent("com.rometools.rome.feed.WireFeed", classLoader);
+		JAXB_2_PRESENT = ClassUtils.isPresent("jakarta.xml.bind.Binder", classLoader);
+		JACKSON_PRESENT = ClassUtils.isPresent("tools.jackson.databind.ObjectMapper", classLoader);
+		JACKSON_2_PRESENT = ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", classLoader) &&
 						ClassUtils.isPresent("com.fasterxml.jackson.core.JsonGenerator", classLoader);
-		jacksonXmlPresent = jacksonPresent && ClassUtils.isPresent("tools.jackson.dataformat.xml.XmlMapper", classLoader);
-		jackson2XmlPresent = jackson2Present && ClassUtils.isPresent("com.fasterxml.jackson.dataformat.xml.XmlMapper", classLoader);
-		jacksonSmilePresent = jacksonPresent && ClassUtils.isPresent("tools.jackson.dataformat.smile.SmileMapper", classLoader);
-		jackson2SmilePresent = jackson2Present && ClassUtils.isPresent("com.fasterxml.jackson.dataformat.smile.SmileFactory", classLoader);
-		jacksonCborPresent = jacksonPresent && ClassUtils.isPresent("tools.jackson.dataformat.cbor.CBORMapper", classLoader);
-		jackson2CborPresent = jackson2Present && ClassUtils.isPresent("com.fasterxml.jackson.dataformat.cbor.CBORFactory", classLoader);
-		jacksonYamlPresent = jacksonPresent && ClassUtils.isPresent("tools.jackson.dataformat.yaml.YAMLMapper", classLoader);
-		jackson2YamlPresent = jackson2Present && ClassUtils.isPresent("com.fasterxml.jackson.dataformat.yaml.YAMLFactory", classLoader);
-		gsonPresent = ClassUtils.isPresent("com.google.gson.Gson", classLoader);
+		JACKSON_XML_PRESENT = JACKSON_PRESENT && ClassUtils.isPresent("tools.jackson.dataformat.xml.XmlMapper", classLoader);
+		JACKSON_2_XML_PRESENT = JACKSON_2_PRESENT && ClassUtils.isPresent("com.fasterxml.jackson.dataformat.xml.XmlMapper", classLoader);
+		JACKSON_SMILE_PRESENT = JACKSON_PRESENT && ClassUtils.isPresent("tools.jackson.dataformat.smile.SmileMapper", classLoader);
+		JACKSON_2_SMILE_PRESENT = JACKSON_2_PRESENT && ClassUtils.isPresent("com.fasterxml.jackson.dataformat.smile.SmileFactory", classLoader);
+		JACKSON_CBOR_PRESENT = JACKSON_PRESENT && ClassUtils.isPresent("tools.jackson.dataformat.cbor.CBORMapper", classLoader);
+		JACKSON_2_CBOR_PRESENT = JACKSON_2_PRESENT && ClassUtils.isPresent("com.fasterxml.jackson.dataformat.cbor.CBORFactory", classLoader);
+		JACKSON_YAML_PRESENT = JACKSON_PRESENT && ClassUtils.isPresent("tools.jackson.dataformat.yaml.YAMLMapper", classLoader);
+		JACKSON_2_YAML_PRESENT = JACKSON_2_PRESENT && ClassUtils.isPresent("com.fasterxml.jackson.dataformat.yaml.YAMLFactory", classLoader);
+		GSON_PRESENT = ClassUtils.isPresent("com.google.gson.Gson", classLoader);
 	}
 
 
@@ -354,14 +354,14 @@ class AnnotationDrivenBeanDefinitionParser implements BeanDefinitionParser {
 	}
 
 	protected void addRequestBodyAdvice(RootBeanDefinition beanDef) {
-		if (jackson2Present) {
+		if (JACKSON_2_PRESENT) {
 			beanDef.getPropertyValues().add("requestBodyAdvice",
 					new RootBeanDefinition(JsonViewRequestBodyAdvice.class));
 		}
 	}
 
 	protected void addResponseBodyAdvice(RootBeanDefinition beanDef) {
-		if (jackson2Present) {
+		if (JACKSON_2_PRESENT) {
 			beanDef.getPropertyValues().add("responseBodyAdvice",
 					new RootBeanDefinition(JsonViewResponseBodyAdvice.class));
 		}
@@ -387,7 +387,7 @@ class AnnotationDrivenBeanDefinitionParser implements BeanDefinitionParser {
 		if (element.hasAttribute("validator")) {
 			return new RuntimeBeanReference(element.getAttribute("validator"));
 		}
-		else if (javaxValidationPresent) {
+		else if (BEAN_VALIDATION_PRESENT) {
 			RootBeanDefinition validatorDef = new RootBeanDefinition(
 					"org.springframework.validation.beanvalidation.OptionalValidatorFactoryBean");
 			validatorDef.setSource(source);
@@ -463,23 +463,23 @@ class AnnotationDrivenBeanDefinitionParser implements BeanDefinitionParser {
 
 	private Properties getDefaultMediaTypes() {
 		Properties defaultMediaTypes = new Properties();
-		if (romePresent) {
+		if (ROME_PRESENT) {
 			defaultMediaTypes.put("atom", MediaType.APPLICATION_ATOM_XML_VALUE);
 			defaultMediaTypes.put("rss", MediaType.APPLICATION_RSS_XML_VALUE);
 		}
-		if (jaxb2Present || jacksonXmlPresent || jackson2XmlPresent) {
+		if (JAXB_2_PRESENT || JACKSON_XML_PRESENT || JACKSON_2_XML_PRESENT) {
 			defaultMediaTypes.put("xml", MediaType.APPLICATION_XML_VALUE);
 		}
-		if (jacksonPresent || jackson2Present || gsonPresent) {
+		if (JACKSON_PRESENT || JACKSON_2_PRESENT || GSON_PRESENT) {
 			defaultMediaTypes.put("json", MediaType.APPLICATION_JSON_VALUE);
 		}
-		if (jacksonSmilePresent || jackson2SmilePresent) {
+		if (JACKSON_SMILE_PRESENT || JACKSON_2_SMILE_PRESENT) {
 			defaultMediaTypes.put("smile", "application/x-jackson-smile");
 		}
-		if (jacksonCborPresent || jackson2CborPresent) {
+		if (JACKSON_CBOR_PRESENT || JACKSON_2_CBOR_PRESENT) {
 			defaultMediaTypes.put("cbor", MediaType.APPLICATION_CBOR_VALUE);
 		}
-		if (jacksonYamlPresent || jackson2YamlPresent) {
+		if (JACKSON_YAML_PRESENT || JACKSON_2_YAML_PRESENT) {
 			defaultMediaTypes.put("yaml", MediaType.APPLICATION_YAML_VALUE);
 		}
 		return defaultMediaTypes;
@@ -585,15 +585,15 @@ class AnnotationDrivenBeanDefinitionParser implements BeanDefinitionParser {
 			messageConverters.add(createConverterDefinition(ResourceRegionHttpMessageConverter.class, source));
 			messageConverters.add(createConverterDefinition(AllEncompassingFormHttpMessageConverter.class, source));
 
-			if (romePresent) {
+			if (ROME_PRESENT) {
 				messageConverters.add(createConverterDefinition(AtomFeedHttpMessageConverter.class, source));
 				messageConverters.add(createConverterDefinition(RssChannelHttpMessageConverter.class, source));
 			}
 
-			if (jacksonXmlPresent) {
+			if (JACKSON_XML_PRESENT) {
 				messageConverters.add(createConverterDefinition(JacksonXmlHttpMessageConverter.class, source));
 			}
-			else if (jackson2XmlPresent) {
+			else if (JACKSON_2_XML_PRESENT) {
 				Class<?> type = MappingJackson2XmlHttpMessageConverter.class;
 				RootBeanDefinition jacksonConverterDef = createConverterDefinition(type, source);
 				GenericBeanDefinition jacksonFactoryDef = createObjectMapperFactoryDefinition(source);
@@ -601,28 +601,28 @@ class AnnotationDrivenBeanDefinitionParser implements BeanDefinitionParser {
 				jacksonConverterDef.getConstructorArgumentValues().addIndexedArgumentValue(0, jacksonFactoryDef);
 				messageConverters.add(jacksonConverterDef);
 			}
-			else if (jaxb2Present) {
+			else if (JAXB_2_PRESENT) {
 				messageConverters.add(createConverterDefinition(Jaxb2RootElementHttpMessageConverter.class, source));
 			}
 
-			if (jacksonPresent) {
+			if (JACKSON_PRESENT) {
 				messageConverters.add(createConverterDefinition(JacksonJsonHttpMessageConverter.class, source));
 			}
-			else if (jackson2Present) {
+			else if (JACKSON_2_PRESENT) {
 				Class<?> type = MappingJackson2HttpMessageConverter.class;
 				RootBeanDefinition jacksonConverterDef = createConverterDefinition(type, source);
 				GenericBeanDefinition jacksonFactoryDef = createObjectMapperFactoryDefinition(source);
 				jacksonConverterDef.getConstructorArgumentValues().addIndexedArgumentValue(0, jacksonFactoryDef);
 				messageConverters.add(jacksonConverterDef);
 			}
-			else if (gsonPresent) {
+			else if (GSON_PRESENT) {
 				messageConverters.add(createConverterDefinition(GsonHttpMessageConverter.class, source));
 			}
 
-			if (jacksonSmilePresent) {
+			if (JACKSON_SMILE_PRESENT) {
 				messageConverters.add(createConverterDefinition(JacksonSmileHttpMessageConverter.class, source));
 			}
-			else if (jackson2SmilePresent) {
+			else if (JACKSON_2_SMILE_PRESENT) {
 				Class<?> type = MappingJackson2SmileHttpMessageConverter.class;
 				RootBeanDefinition jacksonConverterDef = createConverterDefinition(type, source);
 				GenericBeanDefinition jacksonFactoryDef = createObjectMapperFactoryDefinition(source);
@@ -631,10 +631,10 @@ class AnnotationDrivenBeanDefinitionParser implements BeanDefinitionParser {
 				messageConverters.add(jacksonConverterDef);
 			}
 
-			if (jacksonCborPresent) {
+			if (JACKSON_CBOR_PRESENT) {
 				messageConverters.add(createConverterDefinition(JacksonCborHttpMessageConverter.class, source));
 			}
-			else if (jackson2CborPresent) {
+			else if (JACKSON_2_CBOR_PRESENT) {
 				Class<?> type = MappingJackson2CborHttpMessageConverter.class;
 				RootBeanDefinition jacksonConverterDef = createConverterDefinition(type, source);
 				GenericBeanDefinition jacksonFactoryDef = createObjectMapperFactoryDefinition(source);
@@ -643,10 +643,10 @@ class AnnotationDrivenBeanDefinitionParser implements BeanDefinitionParser {
 				messageConverters.add(jacksonConverterDef);
 			}
 
-			if (jacksonYamlPresent) {
+			if (JACKSON_YAML_PRESENT) {
 				messageConverters.add(createConverterDefinition(JacksonYamlHttpMessageConverter.class, source));
 			}
-			else if (jackson2YamlPresent) {
+			else if (JACKSON_2_YAML_PRESENT) {
 				Class<?> type = MappingJackson2YamlHttpMessageConverter.class;
 				RootBeanDefinition jacksonConverterDef = createConverterDefinition(type, source);
 				GenericBeanDefinition jacksonFactoryDef = createObjectMapperFactoryDefinition(source);

spring-webmvc/src/main/java/org/springframework/web/servlet/config/ResourcesBeanDefinitionParser.java

@@ -81,7 +81,7 @@ class ResourcesBeanDefinitionParser implements BeanDefinitionParser {
 
 	private static final String RESOURCE_URL_PROVIDER = "mvcResourceUrlProvider";
 
-	private static final boolean webJarsPresent = ClassUtils.isPresent(
+	private static final boolean WEB_JARS_PRESENT = ClassUtils.isPresent(
 			"org.webjars.WebJarVersionLocator", ResourcesBeanDefinitionParser.class.getClassLoader());
 
 
@@ -325,7 +325,7 @@ class ResourcesBeanDefinitionParser implements BeanDefinitionParser {
 		}
 
 		if (isAutoRegistration) {
-			if (webJarsPresent) {
+			if (WEB_JARS_PRESENT) {
 				RootBeanDefinition webJarsResolverDef = new RootBeanDefinition(LiteWebJarsResourceResolver.class);
 				webJarsResolverDef.setSource(source);
 				webJarsResolverDef.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);

spring-webmvc/src/main/java/org/springframework/web/servlet/config/annotation/ResourceChainRegistration.java

@@ -44,7 +44,7 @@ public class ResourceChainRegistration {
 
 	private static final String DEFAULT_CACHE_NAME = "spring-resource-chain-cache";
 
-	private static final boolean webJarsPresent = ClassUtils.isPresent(
+	private static final boolean WEB_JARS_PRESENT = ClassUtils.isPresent(
 			"org.webjars.WebJarVersionLocator", ResourceChainRegistration.class.getClassLoader());
 
 
@@ -113,7 +113,7 @@ public class ResourceChainRegistration {
 	protected List<ResourceResolver> getResourceResolvers() {
 		if (!this.hasPathResolver) {
 			List<ResourceResolver> result = new ArrayList<>(this.resolvers);
-			if (webJarsPresent && !this.hasWebjarsResolver) {
+			if (WEB_JARS_PRESENT && !this.hasWebjarsResolver) {
 				result.add(new LiteWebJarsResourceResolver());
 			}
 			result.add(new PathResourceResolver());

spring-webmvc/src/main/java/org/springframework/web/servlet/config/annotation/WebMvcConfigurationSupport.java

@@ -180,19 +180,19 @@ import org.springframework.web.util.pattern.PathPatternParser;
  */
 public class WebMvcConfigurationSupport implements ApplicationContextAware, ServletContextAware {
 
-	private static final boolean jacksonPresent;
+	private static final boolean JACKSON_PRESENT;
 
-	private static final boolean jackson2Present;
+	private static final boolean JACKSON_2_PRESENT;
 
-	private static final boolean kotlinSerializationPresent;
+	private static final boolean KOTLIN_SERIALIZATION_PRESENT;
 
 
 	static {
 		ClassLoader classLoader = WebMvcConfigurationSupport.class.getClassLoader();
-		jacksonPresent = ClassUtils.isPresent("tools.jackson.databind.ObjectMapper", classLoader);
-		jackson2Present = ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", classLoader) &&
+		JACKSON_PRESENT = ClassUtils.isPresent("tools.jackson.databind.ObjectMapper", classLoader);
+		JACKSON_2_PRESENT = ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", classLoader) &&
 				ClassUtils.isPresent("com.fasterxml.jackson.core.JsonGenerator", classLoader);
-		kotlinSerializationPresent = ClassUtils.isPresent("kotlinx.serialization.Serializable", classLoader);
+		KOTLIN_SERIALIZATION_PRESENT = ClassUtils.isPresent("kotlinx.serialization.Serializable", classLoader);
 	}
 
 
@@ -652,14 +652,14 @@ public class WebMvcConfigurationSupport implements ApplicationContextAware, Serv
 		adapter.setCustomReturnValueHandlers(getReturnValueHandlers());
 		adapter.setErrorResponseInterceptors(getErrorResponseInterceptors());
 
-		if (jacksonPresent || jackson2Present || kotlinSerializationPresent) {
+		if (JACKSON_PRESENT || JACKSON_2_PRESENT || KOTLIN_SERIALIZATION_PRESENT) {
 			List<RequestBodyAdvice> requestBodyAdvices = new ArrayList<>(2);
 			List<ResponseBodyAdvice<?>> responseBodyAdvices = new ArrayList<>(2);
-			if (jacksonPresent || jackson2Present) {
+			if (JACKSON_PRESENT || JACKSON_2_PRESENT) {
 				requestBodyAdvices.add(new JsonViewRequestBodyAdvice());
 				responseBodyAdvices.add(new JsonViewResponseBodyAdvice());
 			}
-			if (kotlinSerializationPresent) {
+			if (KOTLIN_SERIALIZATION_PRESENT) {
 				requestBodyAdvices.add(new KotlinRequestBodyAdvice());
 				responseBodyAdvices.add(new KotlinResponseBodyAdvice());
 			}
@@ -1032,12 +1032,12 @@ public class WebMvcConfigurationSupport implements ApplicationContextAware, Serv
 		exceptionHandlerResolver.setCustomArgumentResolvers(getArgumentResolvers());
 		exceptionHandlerResolver.setCustomReturnValueHandlers(getReturnValueHandlers());
 		exceptionHandlerResolver.setErrorResponseInterceptors(getErrorResponseInterceptors());
-		if (jacksonPresent || jackson2Present || kotlinSerializationPresent) {
+		if (JACKSON_PRESENT || JACKSON_2_PRESENT || KOTLIN_SERIALIZATION_PRESENT) {
 			List<ResponseBodyAdvice<?>> responseBodyAdvices = new ArrayList<>(2);
-			if (jacksonPresent || jackson2Present) {
+			if (JACKSON_PRESENT || JACKSON_2_PRESENT) {
 				responseBodyAdvices.add(new JsonViewResponseBodyAdvice());
 			}
-			if (kotlinSerializationPresent) {
+			if (KOTLIN_SERIALIZATION_PRESENT) {
 				responseBodyAdvices.add(new KotlinResponseBodyAdvice());
 			}
 			exceptionHandlerResolver.setResponseBodyAdvice(responseBodyAdvices);

spring-webmvc/src/main/java/org/springframework/web/servlet/function/AsyncServerResponse.java

@@ -100,7 +100,7 @@ public interface AsyncServerResponse extends ServerResponse {
 		if (obj instanceof CompletableFuture<?> futureResponse) {
 			return (CompletableFuture<ServerResponse>) futureResponse;
 		}
-		else if (DefaultAsyncServerResponse.reactiveStreamsPresent) {
+		else if (DefaultAsyncServerResponse.REACTIVE_STREAMS_PRESENT) {
 			ReactiveAdapterRegistry registry = ReactiveAdapterRegistry.getSharedInstance();
 			ReactiveAdapter publisherAdapter = registry.getAdapter(obj.getClass());
 			if (publisherAdapter != null) {

spring-webmvc/src/main/java/org/springframework/web/servlet/function/DefaultAsyncServerResponse.java

@@ -49,7 +49,7 @@ import org.springframework.web.servlet.ModelAndView;
  */
 final class DefaultAsyncServerResponse extends ErrorHandlingServerResponse implements AsyncServerResponse {
 
-	static final boolean reactiveStreamsPresent = ClassUtils.isPresent(
+	static final boolean REACTIVE_STREAMS_PRESENT = ClassUtils.isPresent(
 			"org.reactivestreams.Publisher", DefaultAsyncServerResponse.class.getClassLoader());
 
 	private final CompletableFuture<ServerResponse> futureResponse;

spring-webmvc/src/main/java/org/springframework/web/servlet/function/DefaultEntityResponseBuilder.java

@@ -211,7 +211,7 @@ final class DefaultEntityResponseBuilder<T> implements EntityResponse.Builder<T>
 			return new CompletionStageEntityResponse(this.status, this.headers, this.cookies,
 					completionStage, this.entityType);
 		}
-		else if (DefaultAsyncServerResponse.reactiveStreamsPresent) {
+		else if (DefaultAsyncServerResponse.REACTIVE_STREAMS_PRESENT) {
 			ReactiveAdapter adapter = ReactiveAdapterRegistry.getSharedInstance().getAdapter(this.entity.getClass());
 			if (adapter != null) {
 				Publisher<T> publisher = adapter.toPublisher(this.entity);

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ReactiveTypeHandler.java

@@ -83,7 +83,7 @@ class ReactiveTypeHandler {
 
 	private static final MediaType APPLICATION_GRPC = MediaType.valueOf("application/grpc");
 
-	private static final boolean isContextPropagationPresent = ClassUtils.isPresent(
+	private static final boolean CONTEXT_PROPAGATION_PRESENT = ClassUtils.isPresent(
 			"io.micrometer.context.ContextSnapshot", ReactiveTypeHandler.class.getClassLoader());
 
 	private static final Log logger = LogFactory.getLog(ReactiveTypeHandler.class);
@@ -116,7 +116,7 @@ class ReactiveTypeHandler {
 	}
 
 	private static @Nullable Object initContextSnapshotHelper(@Nullable Object snapshotFactory) {
-		if (isContextPropagationPresent) {
+		if (CONTEXT_PROPAGATION_PRESENT) {
 			return new ContextSnapshotHelper((ContextSnapshotFactory) snapshotFactory);
 		}
 		return null;
@@ -147,7 +147,7 @@ class ReactiveTypeHandler {
 		Assert.state(adapter != null, () -> "Unexpected return value type: " + clazz);
 
 		TaskDecorator taskDecorator = null;
-		if (isContextPropagationPresent) {
+		if (CONTEXT_PROPAGATION_PRESENT) {
 			ContextSnapshotHelper helper = (ContextSnapshotHelper) this.contextSnapshotHelper;
 			Assert.notNull(helper, "No ContextSnapshotHelper");
 			returnValue = helper.writeReactorContext(returnValue);

spring-webmvc/src/main/java/org/springframework/web/servlet/support/JspAwareRequestContext.java

@@ -80,7 +80,7 @@ public class JspAwareRequestContext extends RequestContext {
 	 */
 	@Override
 	protected Locale getFallbackLocale() {
-		if (jstlPresent) {
+		if (JSTL_PRESENT) {
 			Locale locale = JstlPageLocaleResolver.getJstlLocale(getPageContext());
 			if (locale != null) {
 				return locale;
@@ -95,7 +95,7 @@ public class JspAwareRequestContext extends RequestContext {
 	 */
 	@Override
 	protected @Nullable TimeZone getFallbackTimeZone() {
-		if (jstlPresent) {
+		if (JSTL_PRESENT) {
 			TimeZone timeZone = JstlPageLocaleResolver.getJstlTimeZone(getPageContext());
 			if (timeZone != null) {
 				return timeZone;

spring-webmvc/src/main/java/org/springframework/web/servlet/support/RequestContext.java

@@ -82,7 +82,7 @@ public class RequestContext {
 	public static final String WEB_APPLICATION_CONTEXT_ATTRIBUTE = RequestContext.class.getName() + ".CONTEXT";
 
 
-	protected static final boolean jstlPresent = ClassUtils.isPresent(
+	protected static final boolean JSTL_PRESENT = ClassUtils.isPresent(
 			"jakarta.servlet.jsp.jstl.core.Config", RequestContext.class.getClassLoader());
 
 	private final HttpServletRequest request;
@@ -305,7 +305,7 @@ public class RequestContext {
 	 * @see jakarta.servlet.http.HttpServletRequest#getLocale()
 	 */
 	protected Locale getFallbackLocale() {
-		if (jstlPresent) {
+		if (JSTL_PRESENT) {
 			Locale locale = JstlLocaleResolver.getJstlLocale(getRequest(), getServletContext());
 			if (locale != null) {
 				return locale;
@@ -321,7 +321,7 @@ public class RequestContext {
 	 * @return the fallback time zone (or {@code null} if none derivable from the request)
 	 */
 	protected @Nullable TimeZone getFallbackTimeZone() {
-		if (jstlPresent) {
+		if (JSTL_PRESENT) {
 			TimeZone timeZone = JstlLocaleResolver.getJstlTimeZone(getRequest(), getServletContext());
 			if (timeZone != null) {
 				return timeZone;

spring-webmvc/src/main/java/org/springframework/web/servlet/view/InternalResourceViewResolver.java

@@ -49,7 +49,7 @@ import org.springframework.util.ClassUtils;
  */
 public class InternalResourceViewResolver extends UrlBasedViewResolver {
 
-	private static final boolean jstlPresent = ClassUtils.isPresent(
+	private static final boolean JSTL_PRESENT = ClassUtils.isPresent(
 			"jakarta.servlet.jsp.jstl.core.Config", InternalResourceViewResolver.class.getClassLoader());
 
 	private @Nullable Boolean alwaysInclude;
@@ -62,7 +62,7 @@ public class InternalResourceViewResolver extends UrlBasedViewResolver {
 	 */
 	public InternalResourceViewResolver() {
 		Class<?> viewClass = requiredViewClass();
-		if (InternalResourceView.class == viewClass && jstlPresent) {
+		if (InternalResourceView.class == viewClass && JSTL_PRESENT) {
 			viewClass = JstlView.class;
 		}
 		setViewClass(viewClass);

spring-websocket/src/main/java/org/springframework/web/socket/config/MessageBrokerBeanDefinitionParser.java

@@ -116,24 +116,24 @@ class MessageBrokerBeanDefinitionParser implements BeanDefinitionParser {
 
 	private static final int DEFAULT_MAPPING_ORDER = 1;
 
-	private static final boolean jacksonPresent;
+	private static final boolean JACKSON_PRESENT;
 
-	private static final boolean jackson2Present;
+	private static final boolean JACKSON_2_PRESENT;
 
-	private static final boolean gsonPresent;
+	private static final boolean GSON_PRESENT;
 
-	private static final boolean jsonbPresent;
+	private static final boolean JSONB_PRESENT;
 
-	private static final boolean javaxValidationPresent;
+	private static final boolean BEAN_VALIDATION_PRESENT;
 
 	static {
 		ClassLoader classLoader = MessageBrokerBeanDefinitionParser.class.getClassLoader();
-		jacksonPresent = ClassUtils.isPresent("tools.jackson.databind.ObjectMapper", classLoader);
-		jackson2Present = ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", classLoader) &&
+		JACKSON_PRESENT = ClassUtils.isPresent("tools.jackson.databind.ObjectMapper", classLoader);
+		JACKSON_2_PRESENT = ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", classLoader) &&
 				ClassUtils.isPresent("com.fasterxml.jackson.core.JsonGenerator", classLoader);
-		gsonPresent = ClassUtils.isPresent("com.google.gson.Gson", classLoader);
-		jsonbPresent = ClassUtils.isPresent("jakarta.json.bind.Jsonb", classLoader);
-		javaxValidationPresent = ClassUtils.isPresent("jakarta.validation.Validator", classLoader);
+		GSON_PRESENT = ClassUtils.isPresent("com.google.gson.Gson", classLoader);
+		JSONB_PRESENT = ClassUtils.isPresent("jakarta.json.bind.Jsonb", classLoader);
+		BEAN_VALIDATION_PRESENT = ClassUtils.isPresent("jakarta.validation.Validator", classLoader);
 	}
 
 
@@ -510,14 +510,14 @@ class MessageBrokerBeanDefinitionParser implements BeanDefinitionParser {
 			converters.setSource(source);
 			converters.add(new RootBeanDefinition(StringMessageConverter.class));
 			converters.add(new RootBeanDefinition(ByteArrayMessageConverter.class));
-			if (jacksonPresent) {
+			if (JACKSON_PRESENT) {
 				RootBeanDefinition jacksonConverterDef = new RootBeanDefinition(JacksonJsonMessageConverter.class);
 				RootBeanDefinition resolverDef = new RootBeanDefinition(DefaultContentTypeResolver.class);
 				resolverDef.getPropertyValues().add("defaultMimeType", MimeTypeUtils.APPLICATION_JSON);
 				jacksonConverterDef.getPropertyValues().add("contentTypeResolver", resolverDef);
 				converters.add(jacksonConverterDef);
 			}
-			else if (jackson2Present) {
+			else if (JACKSON_2_PRESENT) {
 				RootBeanDefinition jacksonConverterDef = new RootBeanDefinition(MappingJackson2MessageConverter.class);
 				RootBeanDefinition resolverDef = new RootBeanDefinition(DefaultContentTypeResolver.class);
 				resolverDef.getPropertyValues().add("defaultMimeType", MimeTypeUtils.APPLICATION_JSON);
@@ -530,10 +530,10 @@ class MessageBrokerBeanDefinitionParser implements BeanDefinitionParser {
 				jacksonConverterDef.getPropertyValues().add("objectMapper", jacksonFactoryDef);
 				converters.add(jacksonConverterDef);
 			}
-			else if (gsonPresent) {
+			else if (GSON_PRESENT) {
 				converters.add(new RootBeanDefinition(GsonMessageConverter.class));
 			}
-			else if (jsonbPresent) {
+			else if (JSONB_PRESENT) {
 				converters.add(new RootBeanDefinition(JsonbMessageConverter.class));
 			}
 		}
@@ -605,7 +605,7 @@ class MessageBrokerBeanDefinitionParser implements BeanDefinitionParser {
 		if (messageBrokerElement.hasAttribute("validator")) {
 			return new RuntimeBeanReference(messageBrokerElement.getAttribute("validator"));
 		}
-		else if (javaxValidationPresent) {
+		else if (BEAN_VALIDATION_PRESENT) {
 			RootBeanDefinition validatorDef = new RootBeanDefinition(
 					"org.springframework.validation.beanvalidation.OptionalValidatorFactoryBean");
 			validatorDef.setSource(source);

spring-websocket/src/main/java/org/springframework/web/socket/config/WebSocketNamespaceHandler.java

@@ -28,14 +28,14 @@ import org.springframework.util.ClassUtils;
  */
 public class WebSocketNamespaceHandler extends NamespaceHandlerSupport {
 
-	private static final boolean isSpringMessagingPresent = ClassUtils.isPresent(
+	private static final boolean SPRING_MESSAGING_PRESENT = ClassUtils.isPresent(
 			"org.springframework.messaging.Message", WebSocketNamespaceHandler.class.getClassLoader());
 
 
 	@Override
 	public void init() {
 		registerBeanDefinitionParser("handlers", new HandlersBeanDefinitionParser());
-		if (isSpringMessagingPresent) {
+		if (SPRING_MESSAGING_PRESENT) {
 			registerBeanDefinitionParser("message-broker", new MessageBrokerBeanDefinitionParser());
 		}
 	}

spring-websocket/src/main/java/org/springframework/web/socket/server/support/DefaultHandshakeHandler.java

@@ -36,13 +36,13 @@ import org.springframework.web.socket.server.standard.StandardWebSocketUpgradeSt
  */
 public class DefaultHandshakeHandler extends AbstractHandshakeHandler implements ServletContextAware {
 
-	private static final boolean jettyWsPresent = ClassUtils.isPresent(
+	private static final boolean JETTY_WS_PRESENT = ClassUtils.isPresent(
 			"org.eclipse.jetty.ee11.websocket.server.JettyWebSocketServerContainer",
 			DefaultHandshakeHandler.class.getClassLoader());
 
 
 	public DefaultHandshakeHandler() {
-		super(jettyWsPresent ? new JettyRequestUpgradeStrategy() : new StandardWebSocketUpgradeStrategy());
+		super(JETTY_WS_PRESENT ? new JettyRequestUpgradeStrategy() : new StandardWebSocketUpgradeStrategy());
 	}
 
 	public DefaultHandshakeHandler(RequestUpgradeStrategy requestUpgradeStrategy) {

spring-websocket/src/main/java/org/springframework/web/socket/sockjs/client/SockJsClient.java

@@ -63,10 +63,10 @@ import org.springframework.web.util.UriComponentsBuilder;
  */
 public class SockJsClient implements WebSocketClient, Lifecycle {
 
-	private static final boolean jacksonPresent = ClassUtils.isPresent(
+	private static final boolean JACKSON_PRESENT = ClassUtils.isPresent(
 			"tools.jackson.databind.ObjectMapper", SockJsClient.class.getClassLoader());
 
-	private static final boolean jackson2Present = ClassUtils.isPresent(
+	private static final boolean JACKSON_2_PRESENT = ClassUtils.isPresent(
 			"com.fasterxml.jackson.databind.ObjectMapper", SockJsClient.class.getClassLoader());
 
 	private static final Log logger = LogFactory.getLog(SockJsClient.class);
@@ -102,10 +102,10 @@ public class SockJsClient implements WebSocketClient, Lifecycle {
 		Assert.notEmpty(transports, "No transports provided");
 		this.transports = new ArrayList<>(transports);
 		this.infoReceiver = initInfoReceiver(transports);
-		if (jacksonPresent) {
+		if (JACKSON_PRESENT) {
 			this.messageCodec = new JacksonJsonSockJsMessageCodec();
 		}
-		else if (jackson2Present) {
+		else if (JACKSON_2_PRESENT) {
 			this.messageCodec = new Jackson2SockJsMessageCodec();
 		}
 	}

spring-websocket/src/main/java/org/springframework/web/socket/sockjs/transport/TransportHandlingSockJsService.java

@@ -71,10 +71,10 @@ import org.springframework.web.socket.sockjs.support.AbstractSockJsService;
  */
 public class TransportHandlingSockJsService extends AbstractSockJsService implements SockJsServiceConfig, Lifecycle {
 
-	private static final boolean jacksonPresent = ClassUtils.isPresent(
+	private static final boolean JACKSON_PRESENT = ClassUtils.isPresent(
 			"tools.jackson.databind.ObjectMapper", TransportHandlingSockJsService.class.getClassLoader());
 
-	private static final boolean jackson2Present = ClassUtils.isPresent(
+	private static final boolean JACKSON_2_PRESENT = ClassUtils.isPresent(
 			"com.fasterxml.jackson.databind.ObjectMapper", TransportHandlingSockJsService.class.getClassLoader());
 
 
@@ -123,10 +123,10 @@ public class TransportHandlingSockJsService extends AbstractSockJsService implem
 			}
 		}
 
-		if (jacksonPresent) {
+		if (JACKSON_PRESENT) {
 			this.messageCodec = new JacksonJsonSockJsMessageCodec();
 		}
-		else if (jackson2Present) {
+		else if (JACKSON_2_PRESENT) {
 			this.messageCodec = new Jackson2SockJsMessageCodec();
 		}
 	}