Polish

Closes gh-22463

spring-context/src/main/java/org/springframework/context/annotation/ClassPathScanningCandidateComponentProvider.java

 /*
- * 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.
@@ -377,7 +377,7 @@ public class ClassPathScanningCandidateComponentProvider implements EnvironmentC
 			for (TypeFilter filter : this.includeFilters) {
 				String stereotype = extractStereotype(filter);
 				if (stereotype == null) {
-					throw new IllegalArgumentException("Failed to extract stereotype from "+ filter);
+					throw new IllegalArgumentException("Failed to extract stereotype from " + filter);
 				}
 				types.addAll(index.getCandidateTypes(basePackage, stereotype));
 			}

spring-context/src/main/java/org/springframework/context/annotation/ConfigurationClassPostProcessor.java

 /*
- * 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.
@@ -435,7 +435,7 @@ public class ConfigurationClassPostProcessor implements BeanDefinitionRegistryPo
 		}
 
 		@Override
-		public Object postProcessBeforeInitialization(Object bean, String beanName)  {
+		public Object postProcessBeforeInitialization(Object bean, String beanName) {
 			if (bean instanceof ImportAware) {
 				ImportRegistry ir = this.beanFactory.getBean(IMPORT_REGISTRY_BEAN_NAME, ImportRegistry.class);
 				AnnotationMetadata importingClass = ir.getImportingClassFor(bean.getClass().getSuperclass().getName());

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

 /*
- * 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.
@@ -269,7 +269,7 @@ public abstract class AbstractApplicationEventMulticaster
 	 * type before trying to instantiate it.
 	 * <p>If this method returns {@code true} for a given listener as a first pass,
 	 * the listener instance will get retrieved and fully evaluated through a
-	 * {@link #supportsEvent(ApplicationListener,ResolvableType, Class)}  call afterwards.
+	 * {@link #supportsEvent(ApplicationListener, ResolvableType, Class)}  call afterwards.
 	 * @param listenerType the listener's type as determined by the BeanFactory
 	 * @param eventType the event type to check
 	 * @return whether the given listener should be included in the candidates

spring-context/src/main/java/org/springframework/context/support/AbstractApplicationContext.java

@@ -1251,7 +1251,7 @@ public abstract class AbstractApplicationContext extends DefaultResourceLoader
 	@Override
 	@Nullable
 	public <A extends Annotation> A findAnnotationOnBean(String beanName, Class<A> annotationType)
-			throws NoSuchBeanDefinitionException{
+			throws NoSuchBeanDefinitionException {
 
 		assertBeanFactoryActive();
 		return getBeanFactory().findAnnotationOnBean(beanName, annotationType);

spring-context/src/main/java/org/springframework/context/support/ResourceBundleMessageSource.java

 /*
- * 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.
@@ -377,7 +377,7 @@ public class ResourceBundleMessageSource extends AbstractResourceBasedMessageSou
 			try {
 				return bundle.getString(key);
 			}
-			catch (MissingResourceException ex){
+			catch (MissingResourceException ex) {
 				// Assume key not found for some other reason
 				// -> do NOT throw the exception to allow for checking parent message source.
 			}

spring-context/src/main/java/org/springframework/context/support/SimpleThreadScope.java

 /*
- * 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.
@@ -43,7 +43,7 @@ import org.springframework.lang.Nullable;
  * <p>For an implementation of a thread-based {@code Scope} with support for
  * destruction callbacks, refer to the
  * <a href="http://www.springbyexample.org/examples/custom-thread-scope-module.html">
-*  Spring by Example Custom Thread Scope Module</a>.
+ *  Spring by Example Custom Thread Scope Module</a>.
  *
  * <p>Thanks to Eugene Kuleshov for submitting the original prototype for a thread scope!
  *

spring-webmvc/src/main/java/org/springframework/web/servlet/DispatcherServlet.java

 /*
- * 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.
@@ -960,7 +960,7 @@ public class DispatcherServlet extends FrameworkServlet {
 						.collect(Collectors.joining(", "));
 			}
 			else {
-				params = (request.getParameterMap().isEmpty() ? "" :  "masked");
+				params = (request.getParameterMap().isEmpty() ? "" : "masked");
 			}
 
 			String query = StringUtils.isEmpty(request.getQueryString()) ? "" : "?" + request.getQueryString();
@@ -1166,7 +1166,7 @@ public class DispatcherServlet extends FrameworkServlet {
 					logger.trace("Request already resolved to MultipartHttpServletRequest, e.g. by MultipartFilter");
 				}
 			}
-			else if (hasMultipartException(request) ) {
+			else if (hasMultipartException(request)) {
 				logger.debug("Multipart resolution previously failed for current request - " +
 						"skipping re-resolution for undisturbed error rendering");
 			}
@@ -1432,7 +1432,7 @@ public class DispatcherServlet extends FrameworkServlet {
 	 * @param attributesSnapshot the snapshot of the request attributes before the include
 	 */
 	@SuppressWarnings("unchecked")
-	private void restoreAttributesAfterInclude(HttpServletRequest request, Map<?,?> attributesSnapshot) {
+	private void restoreAttributesAfterInclude(HttpServletRequest request, Map<?, ?> attributesSnapshot) {
 		// Need to copy into separate Collection here, to avoid side effects
 		// on the Enumeration when removing attributes.
 		Set<String> attrsToCheck = new HashSet<>();
@@ -1451,7 +1451,7 @@ public class DispatcherServlet extends FrameworkServlet {
 		// or removing the attribute, respectively, if appropriate.
 		for (String attrName : attrsToCheck) {
 			Object attrValue = attributesSnapshot.get(attrName);
-			if (attrValue == null){
+			if (attrValue == null) {
 				request.removeAttribute(attrName);
 			}
 			else if (attrValue != request.getAttribute(attrName)) {

spring-webmvc/src/main/java/org/springframework/web/servlet/config/AnnotationDrivenBeanDefinitionParser.java

 /*
- * 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.
@@ -213,7 +213,7 @@ class AnnotationDrivenBeanDefinitionParser implements BeanDefinitionParser {
 		}
 
 		configurePathMatchingProperties(handlerMappingDef, element, context);
-		readerContext.getRegistry().registerBeanDefinition(HANDLER_MAPPING_BEAN_NAME , handlerMappingDef);
+		readerContext.getRegistry().registerBeanDefinition(HANDLER_MAPPING_BEAN_NAME, handlerMappingDef);
 
 		RuntimeBeanReference corsRef = MvcNamespaceUtils.registerCorsConfigurations(null, context, source);
 		handlerMappingDef.getPropertyValues().add("corsConfigurations", corsRef);
@@ -265,7 +265,7 @@ class AnnotationDrivenBeanDefinitionParser implements BeanDefinitionParser {
 
 		handlerAdapterDef.getPropertyValues().add("callableInterceptors", callableInterceptors);
 		handlerAdapterDef.getPropertyValues().add("deferredResultInterceptors", deferredResultInterceptors);
-		readerContext.getRegistry().registerBeanDefinition(HANDLER_ADAPTER_BEAN_NAME , handlerAdapterDef);
+		readerContext.getRegistry().registerBeanDefinition(HANDLER_ADAPTER_BEAN_NAME, handlerAdapterDef);
 
 		RootBeanDefinition uriContributorDef =
 				new RootBeanDefinition(CompositeUriComponentsContributorFactoryBean.class);
@@ -391,7 +391,7 @@ class AnnotationDrivenBeanDefinitionParser implements BeanDefinitionParser {
 			factoryBeanDef.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
 			factoryBeanDef.getPropertyValues().add("mediaTypes", getDefaultMediaTypes());
 			String name = CONTENT_NEGOTIATION_MANAGER_BEAN_NAME;
-			context.getReaderContext().getRegistry().registerBeanDefinition(name , factoryBeanDef);
+			context.getReaderContext().getRegistry().registerBeanDefinition(name, factoryBeanDef);
 			context.registerComponent(new BeanComponentDefinition(factoryBeanDef, name));
 			beanRef = new RuntimeBeanReference(name);
 		}

spring-webmvc/src/main/java/org/springframework/web/servlet/config/MvcNamespaceUtils.java

 /*
- * 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.
@@ -123,7 +123,7 @@ public abstract class MvcNamespaceUtils {
 	 * name unless already registered.
 	 */
 	private static void registerBeanNameUrlHandlerMapping(ParserContext context, @Nullable Object source) {
-		if (!context.getRegistry().containsBeanDefinition(BEAN_NAME_URL_HANDLER_MAPPING_BEAN_NAME)){
+		if (!context.getRegistry().containsBeanDefinition(BEAN_NAME_URL_HANDLER_MAPPING_BEAN_NAME)) {
 			RootBeanDefinition mappingDef = new RootBeanDefinition(BeanNameUrlHandlerMapping.class);
 			mappingDef.setSource(source);
 			mappingDef.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
@@ -195,7 +195,7 @@ public abstract class MvcNamespaceUtils {
 	 * unless already registered.
 	 */
 	private static void registerHandlerMappingIntrospector(ParserContext parserContext, @Nullable Object source) {
-		if (!parserContext.getRegistry().containsBeanDefinition(HANDLER_MAPPING_INTROSPECTOR_BEAN_NAME)){
+		if (!parserContext.getRegistry().containsBeanDefinition(HANDLER_MAPPING_INTROSPECTOR_BEAN_NAME)) {
 			RootBeanDefinition beanDef = new RootBeanDefinition(HandlerMappingIntrospector.class);
 			beanDef.setSource(source);
 			beanDef.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);

spring-webmvc/src/main/java/org/springframework/web/servlet/handler/AbstractUrlHandlerMapping.java

 /*
- * 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.
@@ -179,7 +179,7 @@ public abstract class AbstractUrlHandlerMapping extends AbstractHandlerMapping i
 			}
 			else if (useTrailingSlashMatch()) {
 				if (!registeredPattern.endsWith("/") && getPathMatcher().match(registeredPattern + "/", urlPath)) {
-					matchingPatterns.add(registeredPattern +"/");
+					matchingPatterns.add(registeredPattern + "/");
 				}
 			}
 		}

spring-webmvc/src/main/java/org/springframework/web/servlet/handler/HandlerExceptionResolverComposite.java

 /*
- * 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.
@@ -73,7 +73,7 @@ public class HandlerExceptionResolverComposite implements HandlerExceptionResolv
 	@Override
 	@Nullable
 	public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response,
-			@Nullable Object handler,Exception ex) {
+			@Nullable Object handler, Exception ex) {
 
 		if (this.resolvers != null) {
 			for (HandlerExceptionResolver handlerExceptionResolver : this.resolvers) {

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/condition/PatternsRequestCondition.java

 /*
- * 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.
@@ -256,7 +256,7 @@ public final class PatternsRequestCondition extends AbstractRequestCondition<Pat
 		}
 		if (this.useTrailingSlashMatch) {
 			if (!pattern.endsWith("/") && this.pathMatcher.match(pattern + "/", lookupPath)) {
-				return pattern +"/";
+				return pattern + "/";
 			}
 		}
 		return null;

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/RequestMappingInfoHandlerMethodMappingNamingStrategy.java

 /*
- * 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.
@@ -46,7 +46,7 @@ public class RequestMappingInfoHandlerMethodMappingNamingStrategy
 		}
 		StringBuilder sb = new StringBuilder();
 		String simpleTypeName = handlerMethod.getBeanType().getSimpleName();
-		for (int i = 0 ; i < simpleTypeName.length(); i++) {
+		for (int i = 0; i < simpleTypeName.length(); i++) {
 			if (Character.isUpperCase(simpleTypeName.charAt(i))) {
 				sb.append(simpleTypeName.charAt(i));
 			}

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ExceptionHandlerExceptionResolver.java

 /*
- * 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.
@@ -127,7 +127,7 @@ public class ExceptionHandlerExceptionResolver extends AbstractHandlerMethodExce
 	 * resolution use {@link #setArgumentResolvers} instead.
 	 */
 	public void setCustomArgumentResolvers(@Nullable List<HandlerMethodArgumentResolver> argumentResolvers) {
-		this.customArgumentResolvers= argumentResolvers;
+		this.customArgumentResolvers = argumentResolvers;
 	}
 
 	/**

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/SessionAttributeMethodArgumentResolver.java

 /*
- * 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.
@@ -50,14 +50,14 @@ public class SessionAttributeMethodArgumentResolver extends AbstractNamedValueMe
 
 	@Override
 	@Nullable
-	protected Object resolveName(String name, MethodParameter parameter, NativeWebRequest request){
+	protected Object resolveName(String name, MethodParameter parameter, NativeWebRequest request) {
 		return request.getAttribute(name, RequestAttributes.SCOPE_SESSION);
 	}
 
 	@Override
 	protected void handleMissingValue(String name, MethodParameter parameter) throws ServletException {
 		throw new ServletRequestBindingException("Missing session attribute '" + name +
-				"' of type " +  parameter.getNestedParameterType().getSimpleName());
+				"' of type " + parameter.getNestedParameterType().getSimpleName());
 	}
 
 }

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ViewMethodReturnValueHandler.java

 /*
- * 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.
@@ -50,7 +50,7 @@ public class ViewMethodReturnValueHandler implements HandlerMethodReturnValueHan
 	public void handleReturnValue(@Nullable Object returnValue, MethodParameter returnType,
 			ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception {
 
-		if (returnValue instanceof View){
+		if (returnValue instanceof View) {
 			View view = (View) returnValue;
 			mavContainer.setView(view);
 			if (view instanceof SmartView && ((SmartView) view).isRedirectView()) {

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ViewNameMethodReturnValueHandler.java

 /*
- * 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.
@@ -87,7 +87,7 @@ public class ViewNameMethodReturnValueHandler implements HandlerMethodReturnValu
 				mavContainer.setRedirectModelScenario(true);
 			}
 		}
-		else if (returnValue != null){
+		else if (returnValue != null) {
 			// should not happen
 			throw new UnsupportedOperationException("Unexpected return type: " +
 					returnType.getParameterType().getName() + " in method: " + returnType.getMethod());