Inferred generics for newSetFromMap arrangements

Issue: SPR-13188

Author: jhoeller

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

@@ -129,7 +129,7 @@ public abstract class AbstractAutoProxyCreator extends ProxyProcessorSupport
 	private BeanFactory beanFactory;
 
 	private final Set<String> targetSourcedBeans =
-			Collections.newSetFromMap(new ConcurrentHashMap<String, Boolean>(16));
+			Collections.newSetFromMap(new ConcurrentHashMap<>(16));
 
 	private final Set<Object> earlyProxyReferences =
 			Collections.newSetFromMap(new ConcurrentHashMap<>(16));

spring-beans/src/main/java/org/springframework/beans/BeanUtils.java

@@ -58,7 +58,7 @@ public abstract class BeanUtils {
 	private static final Log logger = LogFactory.getLog(BeanUtils.class);
 
 	private static final Set<Class<?>> unknownEditorTypes =
-			Collections.newSetFromMap(new ConcurrentReferenceHashMap<Class<?>, Boolean>(64));
+			Collections.newSetFromMap(new ConcurrentReferenceHashMap<>(64));
 
 
 	/**

spring-beans/src/main/java/org/springframework/beans/CachedIntrospectionResults.java

@@ -107,7 +107,7 @@ public class CachedIntrospectionResults {
 	 * accept classes from, even if the classes do not qualify as cache-safe.
 	 */
 	static final Set<ClassLoader> acceptedClassLoaders =
-			Collections.newSetFromMap(new ConcurrentHashMap<ClassLoader, Boolean>(16));
+			Collections.newSetFromMap(new ConcurrentHashMap<>(16));
 
 	/**
 	 * Map keyed by Class containing CachedIntrospectionResults, strongly held.

spring-beans/src/main/java/org/springframework/beans/factory/annotation/AutowiredAnnotationBeanPostProcessor.java

@@ -119,8 +119,7 @@ public class AutowiredAnnotationBeanPostProcessor extends InstantiationAwareBean
 
 	protected final Log logger = LogFactory.getLog(getClass());
 
-	private final Set<Class<? extends Annotation>> autowiredAnnotationTypes =
-			new LinkedHashSet<>();
+	private final Set<Class<? extends Annotation>> autowiredAnnotationTypes = new LinkedHashSet<>();
 
 	private String requiredParameterName = "required";
 
@@ -130,14 +129,11 @@ public class AutowiredAnnotationBeanPostProcessor extends InstantiationAwareBean
 
 	private ConfigurableListableBeanFactory beanFactory;
 
-	private final Set<String> lookupMethodsChecked =
-			Collections.newSetFromMap(new ConcurrentHashMap<String, Boolean>(256));
+	private final Set<String> lookupMethodsChecked = Collections.newSetFromMap(new ConcurrentHashMap<>(256));
 
-	private final Map<Class<?>, Constructor<?>[]> candidateConstructorsCache =
-			new ConcurrentHashMap<>(256);
+	private final Map<Class<?>, Constructor<?>[]> candidateConstructorsCache = new ConcurrentHashMap<>(256);
 
-	private final Map<String, InjectionMetadata> injectionMetadataCache =
-			new ConcurrentHashMap<>(256);
+	private final Map<String, InjectionMetadata> injectionMetadataCache = new ConcurrentHashMap<>(256);
 
 
 	/**

spring-beans/src/main/java/org/springframework/beans/factory/annotation/RequiredAnnotationBeanPostProcessor.java

@@ -93,8 +93,7 @@ public class RequiredAnnotationBeanPostProcessor extends InstantiationAwareBeanP
 	/**
 	 * Cache for validated bean names, skipping re-validation for the same bean
 	 */
-	private final Set<String> validatedBeanNames =
-			Collections.newSetFromMap(new ConcurrentHashMap<String, Boolean>(64));
+	private final Set<String> validatedBeanNames = Collections.newSetFromMap(new ConcurrentHashMap<>(64));
 
 
 	/**

spring-beans/src/main/java/org/springframework/beans/factory/config/PropertyOverrideConfigurer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -74,7 +74,7 @@ public class PropertyOverrideConfigurer extends PropertyResourceConfigurer {
 	/**
 	 * Contains names of beans that have overrides
 	 */
-	private final Set<String> beanNames = Collections.newSetFromMap(new ConcurrentHashMap<String, Boolean>(16));
+	private final Set<String> beanNames = Collections.newSetFromMap(new ConcurrentHashMap<>(16));
 
 
 	/**

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

@@ -160,12 +160,10 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 	private SecurityContextProvider securityContextProvider;
 
 	/** Map from bean name to merged RootBeanDefinition */
-	private final Map<String, RootBeanDefinition> mergedBeanDefinitions =
-			new ConcurrentHashMap<>(256);
+	private final Map<String, RootBeanDefinition> mergedBeanDefinitions = new ConcurrentHashMap<>(256);
 
 	/** Names of beans that have already been created at least once */
-	private final Set<String> alreadyCreated =
-			Collections.newSetFromMap(new ConcurrentHashMap<String, Boolean>(256));
+	private final Set<String> alreadyCreated = Collections.newSetFromMap(new ConcurrentHashMap<>(256));
 
 	/** Names of beans that are currently in creation */
 	private final ThreadLocal<Object> prototypesCurrentlyInCreation =

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

@@ -96,11 +96,11 @@ public class DefaultSingletonBeanRegistry extends SimpleAliasRegistry implements
 
 	/** Names of beans that are currently in creation */
 	private final Set<String> singletonsCurrentlyInCreation =
-			Collections.newSetFromMap(new ConcurrentHashMap<String, Boolean>(16));
+			Collections.newSetFromMap(new ConcurrentHashMap<>(16));
 
 	/** Names of beans currently excluded from in creation checks */
 	private final Set<String> inCreationCheckExclusions =
-			Collections.newSetFromMap(new ConcurrentHashMap<String, Boolean>(16));
+			Collections.newSetFromMap(new ConcurrentHashMap<>(16));
 
 	/** List of suppressed Exceptions, available for associating related causes */
 	private Set<Exception> suppressedExceptions;

spring-context/src/main/java/org/springframework/context/event/EventListenerMethodProcessor.java

@@ -60,8 +60,7 @@ public class EventListenerMethodProcessor implements SmartInitializingSingleton,
 
 	private final EventExpressionEvaluator evaluator = new EventExpressionEvaluator();
 
-	private final Set<Class<?>> nonAnnotatedClasses =
-			Collections.newSetFromMap(new ConcurrentHashMap<Class<?>, Boolean>(64));
+	private final Set<Class<?>> nonAnnotatedClasses = Collections.newSetFromMap(new ConcurrentHashMap<>(64));
 
 
 	@Override

spring-context/src/main/java/org/springframework/scheduling/annotation/ScheduledAnnotationBeanPostProcessor.java

@@ -109,11 +109,9 @@ public class ScheduledAnnotationBeanPostProcessor implements DestructionAwareBea
 
 	private final ScheduledTaskRegistrar registrar = new ScheduledTaskRegistrar();
 
-	private final Set<Class<?>> nonAnnotatedClasses =
-			Collections.newSetFromMap(new ConcurrentHashMap<Class<?>, Boolean>(64));
+	private final Set<Class<?>> nonAnnotatedClasses = Collections.newSetFromMap(new ConcurrentHashMap<>(64));
 
-	private final Map<Object, Set<ScheduledTask>> scheduledTasks =
-			new ConcurrentHashMap<>(16);
+	private final Map<Object, Set<ScheduledTask>> scheduledTasks = new ConcurrentHashMap<>(16);
 
 
 	@Override