Polishing

spring-aop/src/main/java/org/springframework/aop/framework/autoproxy/target/AbstractBeanFactoryBasedTargetSourceCreator.java

@@ -61,8 +61,7 @@ public abstract class AbstractBeanFactoryBasedTargetSourceCreator
 	private ConfigurableBeanFactory beanFactory;
 
 	/** Internally used DefaultListableBeanFactory instances, keyed by bean name. */
-	private final Map<String, DefaultListableBeanFactory> internalBeanFactories =
+	private final Map<String, DefaultListableBeanFactory> internalBeanFactories = new HashMap<>();
-			new HashMap<>();
 
 
 	@Override

spring-aop/src/main/java/org/springframework/aop/target/CommonsPool2TargetSource.java

@@ -181,7 +181,7 @@ public class CommonsPool2TargetSource extends AbstractPoolingTargetSource implem
 	}
 
 	/**
-	 * Set whether the call should bock when the pool is exhausted.
+	 * Set whether the call should block when the pool is exhausted.
 	 */
 	public void setBlockWhenExhausted(boolean blockWhenExhausted) {
 		this.blockWhenExhausted = blockWhenExhausted;

spring-aspects/src/main/java/org/springframework/cache/aspectj/AnyThrow.java

@@ -17,8 +17,8 @@
 package org.springframework.cache.aspectj;
 
 /**
- * Utility to trick the compiler to throw a valid checked
+ * Utility to trick the compiler to throw valid checked exceptions masked as
- * exceptions within the interceptor.
+ * runtime exceptions within the interceptor.
  *
  * @author Stephane Nicoll
  */
@@ -36,4 +36,5 @@ final class AnyThrow {
 	private static <E extends Throwable> void throwAny(Throwable e) throws E {
 		throw (E) e;
 	}
+
 }

spring-beans/src/main/java/org/springframework/beans/factory/groovy/GroovyBeanDefinitionWrapper.java

@@ -16,9 +16,9 @@
 
 package org.springframework.beans.factory.groovy;
 
-import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
+import java.util.Set;
 
 import groovy.lang.GroovyObjectSupport;
 
@@ -51,18 +51,8 @@ class GroovyBeanDefinitionWrapper extends GroovyObjectSupport {
 	private static final String DESTROY_METHOD = "destroyMethod";
 	private static final String SINGLETON = "singleton";
 
-	private static final List<String> dynamicProperties = new ArrayList<>(8);
+	private static final Set<String> dynamicProperties = Set.of(PARENT, AUTOWIRE, CONSTRUCTOR_ARGS,
-
+			FACTORY_BEAN, FACTORY_METHOD, INIT_METHOD, DESTROY_METHOD, SINGLETON);
-	static {
-		dynamicProperties.add(PARENT);
-		dynamicProperties.add(AUTOWIRE);
-		dynamicProperties.add(CONSTRUCTOR_ARGS);
-		dynamicProperties.add(FACTORY_BEAN);
-		dynamicProperties.add(FACTORY_METHOD);
-		dynamicProperties.add(INIT_METHOD);
-		dynamicProperties.add(DESTROY_METHOD);
-		dynamicProperties.add(SINGLETON);
-	}
 
 
 	private String beanName;
@@ -98,11 +88,11 @@ class GroovyBeanDefinitionWrapper extends GroovyObjectSupport {
 		return this.beanName;
 	}
 
-	public void setBeanDefinition(AbstractBeanDefinition definition) {
+	void setBeanDefinition(AbstractBeanDefinition definition) {
 		this.definition = definition;
 	}
 
-	public AbstractBeanDefinition getBeanDefinition() {
+	AbstractBeanDefinition getBeanDefinition() {
 		if (this.definition == null) {
 			this.definition = createBeanDefinition();
 		}
@@ -126,19 +116,17 @@ class GroovyBeanDefinitionWrapper extends GroovyObjectSupport {
 		return bd;
 	}
 
-	public void setBeanDefinitionHolder(BeanDefinitionHolder holder) {
+	void setBeanDefinitionHolder(BeanDefinitionHolder holder) {
 		this.definition = (AbstractBeanDefinition) holder.getBeanDefinition();
 		this.beanName = holder.getBeanName();
 	}
 
-	public BeanDefinitionHolder getBeanDefinitionHolder() {
+	BeanDefinitionHolder getBeanDefinitionHolder() {
 		return new BeanDefinitionHolder(getBeanDefinition(), getBeanName());
 	}
 
-	public void setParent(Object obj) {
+	void setParent(Object obj) {
-		if (obj == null) {
+		Assert.notNull(obj, "Parent bean cannot be set to a null runtime bean reference.");
-			throw new IllegalArgumentException("Parent bean cannot be set to a null runtime bean reference!");
-		}
 		if (obj instanceof String name) {
 			this.parentName = name;
 		}
@@ -152,7 +140,7 @@ class GroovyBeanDefinitionWrapper extends GroovyObjectSupport {
 		getBeanDefinition().setAbstract(false);
 	}
 
-	public GroovyBeanDefinitionWrapper addProperty(String propertyName, Object propertyValue) {
+	GroovyBeanDefinitionWrapper addProperty(String propertyName, Object propertyValue) {
 		if (propertyValue instanceof GroovyBeanDefinitionWrapper wrapper) {
 			propertyValue = wrapper.getBeanDefinition();
 		}

spring-beans/src/main/java/org/springframework/beans/factory/groovy/GroovyDynamicElementReader.java

@@ -88,6 +88,7 @@ class GroovyDynamicElementReader extends GroovyObjectSupport {
 			String myNamespace = this.rootNamespace;
 			Map<String, String> myNamespaces = this.xmlNamespaces;
 
+			@SuppressWarnings("serial")
 			Closure<Object> callable = new Closure<>(this) {
 				@Override
 				public Object call(Object... arguments) {

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

@@ -1732,7 +1732,7 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
 			if (beanInstance != null) {
 				Integer candidatePriority = getPriority(beanInstance);
 				if (candidatePriority != null) {
-					if (highestPriorityBeanName != null) {
+					if (highestPriority != null) {
 						if (candidatePriority.equals(highestPriority)) {
 							throw new NoUniqueBeanDefinitionException(requiredType, candidates.size(),
 									"Multiple beans found with the same priority ('" + highestPriority +

spring-context/src/main/java/org/springframework/context/i18n/SimpleTimeZoneAwareLocaleContext.java

@@ -61,7 +61,7 @@ public class SimpleTimeZoneAwareLocaleContext extends SimpleLocaleContext implem
 
 	@Override
 	public String toString() {
-		return super.toString() + " " + (this.timeZone != null ? this.timeZone.toString() : "-");
+		return super.toString() + " " + (this.timeZone != null ? this.timeZone : "-");
 	}
 
 }

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

@@ -80,7 +80,7 @@ public class DeferredResult<T> {
 	 * Create a DeferredResult.
 	 */
 	public DeferredResult() {
-		this(null, () -> RESULT_NONE);
+		this(null);
 	}
 
 	/**
@@ -101,8 +101,7 @@ public class DeferredResult<T> {
 	 * @param timeoutResult the result to use
 	 */
 	public DeferredResult(@Nullable Long timeoutValue, Object timeoutResult) {
-		this.timeoutValue = timeoutValue;
+		this(timeoutValue, () -> timeoutResult);
-		this.timeoutResult = () -> timeoutResult;
 	}
 
 	/**

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

@@ -78,7 +78,7 @@ public interface DeferredResultProcessingInterceptor {
 	 * timeout result.
 	 * @param request the current request
 	 * @param deferredResult the DeferredResult for the current request
-	 * @param concurrentResult the result to which the {@code DeferredResult}
+	 * @param concurrentResult the concurrent result
 	 * @throws Exception in case of errors
 	 */
 	default <T> void postProcess(NativeWebRequest request, DeferredResult<T> deferredResult,

spring-webflux/src/main/java/org/springframework/web/reactive/result/condition/ProducesRequestCondition.java

@@ -57,7 +57,7 @@ public final class ProducesRequestCondition extends AbstractRequestCondition<Pro
 
 
 	private final List<ProduceMediaTypeExpression> mediaTypeAllList =
-			Collections.singletonList(new ProduceMediaTypeExpression(MediaType.ALL_VALUE));
+			List.of(new ProduceMediaTypeExpression(MediaType.ALL_VALUE));
 
 	private final List<ProduceMediaTypeExpression> expressions;