diff --git a/spring-core/src/main/java/org/springframework/util/PatternMatchUtils.java b/spring-core/src/main/java/org/springframework/util/PatternMatchUtils.java
index e26852b914d..0430128489c 100644
--- a/spring-core/src/main/java/org/springframework/util/PatternMatchUtils.java
+++ b/spring-core/src/main/java/org/springframework/util/PatternMatchUtils.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -39,20 +39,22 @@ public abstract class PatternMatchUtils {
 		if (pattern == null || str == null) {
 			return false;
 		}
+
 		int firstIndex = pattern.indexOf('*');
 		if (firstIndex == -1) {
 			return pattern.equals(str);
 		}
+
 		if (firstIndex == 0) {
 			if (pattern.length() == 1) {
 				return true;
 			}
-			int nextIndex = pattern.indexOf('*', firstIndex + 1);
+			int nextIndex = pattern.indexOf('*', 1);
 			if (nextIndex == -1) {
 				return str.endsWith(pattern.substring(1));
 			}
 			String part = pattern.substring(1, nextIndex);
-			if ("".equals(part)) {
+			if (part.isEmpty()) {
 				return simpleMatch(pattern.substring(nextIndex), str);
 			}
 			int partIndex = str.indexOf(part);
@@ -64,6 +66,7 @@ public abstract class PatternMatchUtils {
 			}
 			return false;
 		}
+
 		return (str.length() >= firstIndex &&
 				pattern.substring(0, firstIndex).equals(str.substring(0, firstIndex)) &&
 				simpleMatch(pattern.substring(firstIndex), str.substring(firstIndex)));
diff --git a/spring-web/src/main/java/org/springframework/http/converter/json/Jackson2ObjectMapperBuilder.java b/spring-web/src/main/java/org/springframework/http/converter/json/Jackson2ObjectMapperBuilder.java
index 05e569b14d2..15516879acd 100644
--- a/spring-web/src/main/java/org/springframework/http/converter/json/Jackson2ObjectMapperBuilder.java
+++ b/spring-web/src/main/java/org/springframework/http/converter/json/Jackson2ObjectMapperBuilder.java
@@ -299,7 +299,7 @@ public class Jackson2ObjectMapperBuilder {
 	 * @param mixinSource class (or interface) whose annotations are to be "added"
 	 * to target's annotations as value
 	 * @since 4.1.2
-	 * @see com.fasterxml.jackson.databind.ObjectMapper#addMixInAnnotations(Class, Class)
+	 * @see com.fasterxml.jackson.databind.ObjectMapper#addMixIn(Class, Class)
 	 */
 	public Jackson2ObjectMapperBuilder mixIn(Class<?> target, Class<?> mixinSource) {
 		this.mixIns.put(target, mixinSource);
@@ -308,11 +308,11 @@ public class Jackson2ObjectMapperBuilder {
 
 	/**
 	 * Add mix-in annotations to use for augmenting specified class or interface.
-	 * @param mixIns Map of entries with target classes (or interface) whose annotations
+	 * @param mixIns a Map of entries with target classes (or interface) whose annotations
 	 * to effectively override as key and mix-in classes (or interface) whose
 	 * annotations are to be "added" to target's annotations as value.
 	 * @since 4.1.2
-	 * @see com.fasterxml.jackson.databind.ObjectMapper#addMixInAnnotations(Class, Class)
+	 * @see com.fasterxml.jackson.databind.ObjectMapper#addMixIn(Class, Class)
 	 */
 	public Jackson2ObjectMapperBuilder mixIns(Map<Class<?>, Class<?>> mixIns) {
 		this.mixIns.putAll(mixIns);
@@ -337,8 +337,8 @@ public class Jackson2ObjectMapperBuilder {
 
 	/**
 	 * Configure a custom serializer for the given type.
-	 * @see #serializers(JsonSerializer...)
 	 * @since 4.1.2
+	 * @see #serializers(JsonSerializer...)
 	 */
 	public Jackson2ObjectMapperBuilder serializerByType(Class<?> type, JsonSerializer<?> serializer) {
 		this.serializers.put(type, serializer);
@@ -482,6 +482,8 @@ public class Jackson2ObjectMapperBuilder {
 
 	/**
 	 * Specify one or more modules to be registered with the {@link ObjectMapper}.
+	 * Multiple invocations are not additive, the last one defines the modules to
+	 * register.
 	 * <p>Note: If this is set, no finding of modules is going to happen - not by
 	 * Jackson, and not by Spring either (see {@link #findModulesViaServiceLoader}).
 	 * As a consequence, specifying an empty list here will suppress any kind of
@@ -497,6 +499,8 @@ public class Jackson2ObjectMapperBuilder {
 
 	/**
 	 * Set a complete list of modules to be registered with the {@link ObjectMapper}.
+	 * Multiple invocations are not additive, the last one defines the modules to
+	 * register.
 	 * <p>Note: If this is set, no finding of modules is going to happen - not by
 	 * Jackson, and not by Spring either (see {@link #findModulesViaServiceLoader}).
 	 * As a consequence, specifying an empty list here will suppress any kind of
@@ -514,6 +518,8 @@ public class Jackson2ObjectMapperBuilder {
 
 	/**
 	 * Specify one or more modules to be registered with the {@link ObjectMapper}.
+	 * Multiple invocations are not additive, the last one defines the modules
+	 * to register.
 	 * <p>Modules specified here will be registered after
 	 * Spring's autodetection of JSR-310 and Joda-Time, or Jackson's
 	 * finding of modules (see {@link #findModulesViaServiceLoader}),
@@ -530,7 +536,8 @@ public class Jackson2ObjectMapperBuilder {
 
 	/**
 	 * Specify one or more modules by class to be registered with
-	 * the {@link ObjectMapper}.
+	 * the {@link ObjectMapper}. Multiple invocations are not additive,
+	 * the last one defines the modules to register.
 	 * <p>Modules specified here will be registered after
 	 * Spring's autodetection of JSR-310 and Joda-Time, or Jackson's
 	 * finding of modules (see {@link #findModulesViaServiceLoader}),
diff --git a/spring-webflux/src/main/java/org/springframework/web/reactive/result/method/InvocableHandlerMethod.java b/spring-webflux/src/main/java/org/springframework/web/reactive/result/method/InvocableHandlerMethod.java
index 0c6fa54a3e9..fc74f2c89bf 100644
--- a/spring-webflux/src/main/java/org/springframework/web/reactive/result/method/InvocableHandlerMethod.java
+++ b/spring-webflux/src/main/java/org/springframework/web/reactive/result/method/InvocableHandlerMethod.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -111,12 +111,9 @@ public class InvocableHandlerMethod extends HandlerMethod {
 	}
 
 	/**
-	 * Configure a reactive registry. This is needed for cases where the response
-	 * is fully handled within the controller in combination with an async void
-	 * return value.
-	 * <p>By default this is an instance of {@link ReactiveAdapterRegistry} with
-	 * default settings.
-	 * @param registry the registry to use
+	 * Configure a reactive adapter registry. This is needed for cases where the response is
+	 * fully handled within the controller in combination with an async void return value.
+	 * <p>By default this is a {@link ReactiveAdapterRegistry} with default settings.
 	 */
 	public void setReactiveAdapterRegistry(ReactiveAdapterRegistry registry) {
 		this.reactiveAdapterRegistry = registry;
@@ -128,7 +125,7 @@ public class InvocableHandlerMethod extends HandlerMethod {
 	 * @param exchange the current exchange
 	 * @param bindingContext the binding context to use
 	 * @param providedArgs optional list of argument values to match by type
-	 * @return a Mono with a {@link HandlerResult}.
+	 * @return a Mono with a {@link HandlerResult}
 	 */
 	public Mono<HandlerResult> invoke(
 			ServerWebExchange exchange, BindingContext bindingContext, Object... providedArgs) {