Polish "Refact iterator of Map with Java 8 forEach"

Closes gh-1451

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2017 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.

spring-core/src/main/java/org/springframework/core/type/classreading/MethodMetadataReadingVisitor.java

@@ -147,7 +147,7 @@ public class MethodMetadataReadingVisitor extends MethodVisitor implements Metho
 			for (AnnotationAttributes annotationAttributes : attributesList) {
 				AnnotationAttributes convertedAttributes = AnnotationReadingVisitorUtils.convertClassValues(
 						"method '" + getMethodName() + "'", this.classLoader, annotationAttributes, classValuesAsString);
-				convertedAttributes.forEach((attrName, attrValue) -> allAttributes.add(attrName, attrValue));
+				convertedAttributes.forEach(allAttributes::add);
 			}
 		}
 		return allAttributes;

spring-core/src/main/java/org/springframework/util/MimeType.java

@@ -455,7 +455,7 @@ public class MimeType implements Comparable<MimeType>, Serializable {
 
 	private void appendTo(Map<String, String> map, StringBuilder builder) {
 		map.forEach((key, val) -> {
-			builder.append(";");
+			builder.append(';');
 			builder.append(key);
 			builder.append('=');
 			builder.append(val);

spring-core/src/main/java/org/springframework/util/xml/StaxEventHandler.java

@@ -99,10 +99,8 @@ class StaxEventHandler extends AbstractStaxHandler {
 
 	private List<Namespace> getNamespaces(Map<String, String> namespaceMapping) {
 		List<Namespace> result = new ArrayList<>();
-		namespaceMapping.forEach(
-			(prefix, namespaceUri)
-				-> result.add(this.eventFactory.createNamespace(prefix, namespaceUri))
-		);
+		namespaceMapping.forEach((prefix, namespaceUri) ->
+				result.add(this.eventFactory.createNamespace(prefix, namespaceUri)));
 		return result;
 	}