Polish "Iterate map by using lambda function"

See gh-12528

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/health/AbstractHealthAggregator.java

 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.
@@ -34,7 +34,7 @@ public abstract class AbstractHealthAggregator implements HealthAggregator {
 	@Override
 	public final Health aggregate(Map<String, Health> healths) {
 		List<Status> statusCandidates = new ArrayList<>();
-		healths.values().forEach(health -> statusCandidates.add(health.getStatus()));
+		healths.values().forEach((health) -> statusCandidates.add(health.getStatus()));
 		Status status = aggregateStatus(statusCandidates);
 		Map<String, Object> details = aggregateDetails(healths);
 		return new Health.Builder(status, details).build();

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/cloud/CloudFoundryVcapEnvironmentPostProcessor.java

 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.
@@ -196,39 +196,39 @@ public class CloudFoundryVcapEnvironmentPostProcessor
 
 	@SuppressWarnings("unchecked")
 	private void flatten(Properties properties, Map<String, Object> input, String path) {
-		input.forEach((entryKey, value) -> {
-			String key = getFullKey(path, entryKey);
+		input.forEach((key, value) -> {
+			String name = getPropertyName(path, key);
 			if (value instanceof Map) {
 				// Need a compound key
-				flatten(properties, (Map<String, Object>) value, key);
+				flatten(properties, (Map<String, Object>) value, name);
 			}
 			else if (value instanceof Collection) {
 				// Need a compound key
 				Collection<Object> collection = (Collection<Object>) value;
-				properties.put(key,
+				properties.put(name,
 						StringUtils.collectionToCommaDelimitedString(collection));
 				int count = 0;
 				for (Object item : collection) {
 					String itemKey = "[" + (count++) + "]";
-					flatten(properties, Collections.singletonMap(itemKey, item), key);
+					flatten(properties, Collections.singletonMap(itemKey, item), name);
 				}
 			}
 			else if (value instanceof String) {
-				properties.put(key, value);
+				properties.put(name, value);
 			}
 			else if (value instanceof Number) {
-				properties.put(key, value.toString());
+				properties.put(name, value.toString());
 			}
 			else if (value instanceof Boolean) {
-				properties.put(key, value.toString());
+				properties.put(name, value.toString());
 			}
 			else {
-				properties.put(key, value == null ? "" : value);
+				properties.put(name, value == null ? "" : value);
 			}
 		});
 	}
 
-	private String getFullKey(String path, String key) {
+	private String getPropertyName(String path, String key) {
 		if (!StringUtils.hasText(path)) {
 			return key;
 		}

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/jetty/JettyServletWebServerFactory.java

@@ -246,8 +246,8 @@ public class JettyServletWebServerFactory extends AbstractServletWebServerFactor
 	}
 
 	private void addLocaleMappings(WebAppContext context) {
-		getLocaleCharsetMappings().forEach((locale, charset) ->
-				context.addLocaleEncoding(locale.toString(), charset.toString()));
+		getLocaleCharsetMappings().forEach((locale, charset) -> context
+				.addLocaleEncoding(locale.toString(), charset.toString()));
 	}
 
 	private File getTempDirectory() {

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/tomcat/TomcatServletWebServerFactory.java

@@ -232,8 +232,9 @@ public class TomcatServletWebServerFactory extends AbstractServletWebServerFacto
 	}
 
 	private void addLocaleMappings(TomcatEmbeddedContext context) {
-		getLocaleCharsetMappings().forEach((locale, charset) ->
-				context.addLocaleEncodingMappingParameter(locale.toString(), charset.toString()));
+		getLocaleCharsetMappings()
+				.forEach((locale, charset) -> context.addLocaleEncodingMappingParameter(
+						locale.toString(), charset.toString()));
 	}
 
 	private void configureTldSkipPatterns(TomcatEmbeddedContext context) {

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/undertow/FileSessionPersistence.java

 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.
@@ -69,8 +69,8 @@ class FileSessionPersistence implements SessionPersistenceManager {
 	private void save(Map<String, PersistentSession> sessionData,
 			ObjectOutputStream stream) throws IOException {
 		Map<String, Serializable> session = new LinkedHashMap<>();
-		sessionData.forEach((key, value) ->
-				session.put(key, new SerializablePersistentSession(value)));
+		sessionData.forEach((key, value) -> session.put(key,
+				new SerializablePersistentSession(value)));
 		stream.writeObject(session);
 	}
 

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/undertow/UndertowServletWebServerFactory.java

@@ -328,8 +328,8 @@ public class UndertowServletWebServerFactory extends AbstractServletWebServerFac
 	}
 
 	private void addLocaleMappings(DeploymentInfo deployment) {
-		getLocaleCharsetMappings().forEach((locale, charset) ->
-				deployment.addLocaleCharsetMapping(locale.toString(), charset.toString()));
+		getLocaleCharsetMappings().forEach((locale, charset) -> deployment
+				.addLocaleCharsetMapping(locale.toString(), charset.toString()));
 	}
 
 	private void registerServletContainerInitializerToDriveServletContextInitializers(

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/server/MimeMappings.java

 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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-boot-project/spring-boot/src/main/java/org/springframework/boot/web/servlet/ServletContextInitializerBeans.java

@@ -79,7 +79,7 @@ public class ServletContextInitializerBeans
 		addServletContextInitializerBeans(beanFactory);
 		addAdaptableBeans(beanFactory);
 		List<ServletContextInitializer> sortedInitializers = new ArrayList<>();
-		this.initializers.values().forEach(contextInitializers -> {
+		this.initializers.values().forEach((contextInitializers) -> {
 			AnnotationAwareOrderComparator.sort(contextInitializers);
 			sortedInitializers.addAll(contextInitializers);
 		});

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/env/SystemEnvironmentPropertySourceEnvironmentPostProcessorTests.java

 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.