diff --git a/spring-context/src/test/java/org/springframework/context/annotation/Gh29105Tests.java b/spring-context/src/test/java/org/springframework/context/annotation/Gh29105Tests.java
index f93d7a3e35e..d8faf0f1587 100644
--- a/spring-context/src/test/java/org/springframework/context/annotation/Gh29105Tests.java
+++ b/spring-context/src/test/java/org/springframework/context/annotation/Gh29105Tests.java
@@ -16,8 +16,7 @@
 
 package org.springframework.context.annotation;
 
-import java.util.List;
-import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 import org.junit.jupiter.api.Test;
 
@@ -30,25 +29,23 @@ import static org.assertj.core.api.Assertions.assertThat;
  *
  * @author Stephane Nicoll
  */
-public class Gh29105Tests {
+class Gh29105Tests {
 
 	@Test
 	void beanProviderWithParentContextReuseOrder() {
-		AnnotationConfigApplicationContext parent = new AnnotationConfigApplicationContext();
-		parent.register(DefaultConfiguration.class);
-		parent.register(CustomConfiguration.class);
-		parent.refresh();
+		AnnotationConfigApplicationContext parent =
+				new AnnotationConfigApplicationContext(DefaultConfiguration.class, CustomConfiguration.class);
 
 		AnnotationConfigApplicationContext child = new AnnotationConfigApplicationContext();
 		child.setParent(parent);
 		child.register(DefaultConfiguration.class);
 		child.refresh();
 
-		List<Class<?>> orderedTypes = child.getBeanProvider(MyService.class)
-				.orderedStream().map(Object::getClass).collect(Collectors.toList());
+		Stream<Class<?>> orderedTypes = child.getBeanProvider(MyService.class).orderedStream().map(Object::getClass);
 		assertThat(orderedTypes).containsExactly(CustomService.class, DefaultService.class);
-		parent.close();
+
 		child.close();
+		parent.close();
 	}
 
 
diff --git a/spring-tx/src/main/java/org/springframework/transaction/reactive/TransactionalOperatorImpl.java b/spring-tx/src/main/java/org/springframework/transaction/reactive/TransactionalOperatorImpl.java
index ece11c5ec1f..9a1c8a6b4be 100644
--- a/spring-tx/src/main/java/org/springframework/transaction/reactive/TransactionalOperatorImpl.java
+++ b/spring-tx/src/main/java/org/springframework/transaction/reactive/TransactionalOperatorImpl.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -57,7 +57,7 @@ final class TransactionalOperatorImpl implements TransactionalOperator {
 	 */
 	TransactionalOperatorImpl(ReactiveTransactionManager transactionManager, TransactionDefinition transactionDefinition) {
 		Assert.notNull(transactionManager, "ReactiveTransactionManager must not be null");
-		Assert.notNull(transactionManager, "TransactionDefinition must not be null");
+		Assert.notNull(transactionDefinition, "TransactionDefinition must not be null");
 		this.transactionManager = transactionManager;
 		this.transactionDefinition = transactionDefinition;
 	}
diff --git a/spring-web/src/main/java/org/springframework/http/ContentDisposition.java b/spring-web/src/main/java/org/springframework/http/ContentDisposition.java
index ea97e92e6c2..3674f600e58 100644
--- a/spring-web/src/main/java/org/springframework/http/ContentDisposition.java
+++ b/spring-web/src/main/java/org/springframework/http/ContentDisposition.java
@@ -492,8 +492,9 @@ public final class ContentDisposition {
 	 * @see <a href="https://tools.ietf.org/html/rfc5987">RFC 5987</a>
 	 */
 	private static String decodeFilename(String filename, Charset charset) {
-		Assert.notNull(filename, "'input' String should not be null");
-		Assert.notNull(charset, "'charset' should not be null");
+		Assert.notNull(filename, "'filename' must not be null");
+		Assert.notNull(charset, "'charset' must not be null");
+
 		byte[] value = filename.getBytes(charset);
 		ByteArrayOutputStream baos = new ByteArrayOutputStream();
 		int index = 0;
diff --git a/spring-web/src/main/java/org/springframework/http/server/reactive/UndertowServerHttpResponse.java b/spring-web/src/main/java/org/springframework/http/server/reactive/UndertowServerHttpResponse.java
index 6a195245c90..bf6420c4366 100644
--- a/spring-web/src/main/java/org/springframework/http/server/reactive/UndertowServerHttpResponse.java
+++ b/spring-web/src/main/java/org/springframework/http/server/reactive/UndertowServerHttpResponse.java
@@ -64,12 +64,12 @@ class UndertowServerHttpResponse extends AbstractListenerServerHttpResponse impl
 			HttpServerExchange exchange, DataBufferFactory bufferFactory, UndertowServerHttpRequest request) {
 
 		super(bufferFactory, createHeaders(exchange));
-		Assert.notNull(exchange, "HttpServerExchange must not be null");
 		this.exchange = exchange;
 		this.request = request;
 	}
 
 	private static HttpHeaders createHeaders(HttpServerExchange exchange) {
+		Assert.notNull(exchange, "HttpServerExchange must not be null");
 		UndertowHeadersAdapter headersMap = new UndertowHeadersAdapter(exchange.getResponseHeaders());
 		return new HttpHeaders(headersMap);
 	}
diff --git a/spring-webmvc/src/main/java/org/springframework/web/servlet/handler/RequestMatchResult.java b/spring-webmvc/src/main/java/org/springframework/web/servlet/handler/RequestMatchResult.java
index d5f4b09e8df..da02aa2b9df 100644
--- a/spring-webmvc/src/main/java/org/springframework/web/servlet/handler/RequestMatchResult.java
+++ b/spring-webmvc/src/main/java/org/springframework/web/servlet/handler/RequestMatchResult.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -59,7 +59,7 @@ public class RequestMatchResult {
 	 */
 	public RequestMatchResult(PathPattern pathPattern, PathContainer lookupPath) {
 		Assert.notNull(pathPattern, "PathPattern is required");
-		Assert.notNull(pathPattern, "PathContainer is required");
+		Assert.notNull(lookupPath, "PathContainer is required");
 
 		this.pattern = null;
 		this.lookupPath = null;