Remove redundant assignment of default values to volatile fields

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -49,7 +49,7 @@ public class MutablePropertyValues implements PropertyValues, Serializable {
 	@Nullable
 	private Set<String> processedProperties;
 
-	private volatile boolean converted = false;
+	private volatile boolean converted;
 
 
 	/**

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

@@ -613,7 +613,7 @@ private class AutowiredFieldElement extends InjectionMetadata.InjectedElement {
 
 		private final boolean required;
 
-		private volatile boolean cached = false;
+		private volatile boolean cached;
 
 		@Nullable
 		private volatile Object cachedFieldValue;
@@ -678,7 +678,7 @@ private class AutowiredMethodElement extends InjectionMetadata.InjectedElement {
 
 		private final boolean required;
 
-		private volatile boolean cached = false;
+		private volatile boolean cached;
 
 		@Nullable
 		private volatile Object[] cachedMethodArguments;

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

@@ -183,7 +183,7 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
 	private volatile String[] frozenBeanDefinitionNames;
 
 	/** Whether bean definition metadata may be cached for all beans. */
-	private volatile boolean configurationFrozen = false;
+	private volatile boolean configurationFrozen;
 
 
 	/**

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -65,7 +65,7 @@ public class RootBeanDefinition extends AbstractBeanDefinition {
 
 	boolean allowCaching = true;
 
-	boolean isFactoryMethodUnique = false;
+	boolean isFactoryMethodUnique;
 
 	@Nullable
 	volatile ResolvableType targetType;

spring-context/src/main/java/org/springframework/ejb/access/AbstractRemoteSlsbInvokerInterceptor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -45,7 +45,7 @@ public abstract class AbstractRemoteSlsbInvokerInterceptor extends AbstractSlsbI
 
 	private boolean refreshHomeOnConnectFailure = false;
 
-	private volatile boolean homeAsComponent = false;
+	private volatile boolean homeAsComponent;
 
 
 

spring-context/src/main/java/org/springframework/ejb/access/LocalSlsbInvokerInterceptor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -52,7 +52,7 @@
  */
 public class LocalSlsbInvokerInterceptor extends AbstractSlsbInvokerInterceptor {
 
-	private volatile boolean homeAsComponent = false;
+	private volatile boolean homeAsComponent;
 
 
 	/**

spring-context/src/main/java/org/springframework/scheduling/concurrent/ThreadPoolTaskScheduler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -61,7 +61,7 @@ public class ThreadPoolTaskScheduler extends ExecutorConfigurationSupport
 
 	private volatile int poolSize = 1;
 
-	private volatile boolean removeOnCancelPolicy = false;
+	private volatile boolean removeOnCancelPolicy;
 
 	@Nullable
 	private volatile ErrorHandler errorHandler;

spring-context/src/main/java/org/springframework/scheduling/support/PeriodicTrigger.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -50,9 +50,9 @@ public class PeriodicTrigger implements Trigger {
 
 	private final TimeUnit timeUnit;
 
-	private volatile long initialDelay = 0;
+	private volatile long initialDelay;
 
-	private volatile boolean fixedRate = false;
+	private volatile boolean fixedRate;
 
 
 	/**

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

@@ -428,7 +428,7 @@ private static class ConcurrentLruCache<K, V> {
 
 		private final Function<K, V> generator;
 
-		private volatile int size = 0;
+		private volatile int size;
 
 		public ConcurrentLruCache(int maxSize, Function<K, V> generator) {
 			Assert.isTrue(maxSize > 0, "LRU max size should be positive");

spring-jdbc/src/main/java/org/springframework/jdbc/core/simple/AbstractJdbcCall.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -70,7 +70,7 @@ public abstract class AbstractJdbcCall {
 	 * Has this operation been compiled? Compilation means at least checking
 	 * that a DataSource or JdbcTemplate has been provided.
 	 */
-	private volatile boolean compiled = false;
+	private volatile boolean compiled;
 
 	/** The generated string used for call statement. */
 	@Nullable

spring-jdbc/src/main/java/org/springframework/jdbc/core/simple/AbstractJdbcInsert.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -80,7 +80,7 @@ public abstract class AbstractJdbcInsert {
 	 * Has this operation been compiled? Compilation means at least checking
 	 * that a DataSource or JdbcTemplate has been provided.
 	 */
-	private volatile boolean compiled = false;
+	private volatile boolean compiled;
 
 	/** The generated string used for insert statement. */
 	private String insertString = "";

spring-jms/src/main/java/org/springframework/jms/listener/AbstractJmsListeningContainer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -81,7 +81,7 @@ public abstract class AbstractJmsListeningContainer extends JmsDestinationAccess
 
 	private boolean active = false;
 
-	private volatile boolean running = false;
+	private volatile boolean running;
 
 	private final List<Object> pausedTasks = new LinkedList<>();
 

spring-jms/src/main/java/org/springframework/jms/listener/DefaultMessageListenerContainer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -198,9 +198,9 @@ public class DefaultMessageListenerContainer extends AbstractPollingMessageListe
 
 	private int registeredWithDestination = 0;
 
-	private volatile boolean recovering = false;
+	private volatile boolean recovering;
 
-	private volatile boolean interrupted = false;
+	private volatile boolean interrupted;
 
 	@Nullable
 	private Runnable stopCallback;

spring-messaging/src/main/java/org/springframework/messaging/core/GenericMessagingTemplate.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -65,7 +65,7 @@ public class GenericMessagingTemplate extends AbstractDestinationResolvingMessag
 
 	private String receiveTimeoutHeader = DEFAULT_RECEIVE_TIMEOUT_HEADER;
 
-	private volatile boolean throwExceptionOnLateReply = false;
+	private volatile boolean throwExceptionOnLateReply;
 
 
 	/**

spring-messaging/src/main/java/org/springframework/messaging/simp/annotation/support/SimpAnnotationMethodMessageHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -121,7 +121,7 @@ public class SimpAnnotationMethodMessageHandler extends AbstractMethodMessageHan
 	@Nullable
 	private MessageHeaderInitializer headerInitializer;
 
-	private volatile boolean running = false;
+	private volatile boolean running;
 
 	private final Object lifecycleMonitor = new Object();
 

spring-messaging/src/main/java/org/springframework/messaging/simp/broker/AbstractBrokerMessageHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -71,7 +71,7 @@ public abstract class AbstractBrokerMessageHandler
 
 	private boolean autoStartup = true;
 
-	private volatile boolean running = false;
+	private volatile boolean running;
 
 	private final Object lifecycleMonitor = new Object();
 

spring-messaging/src/main/java/org/springframework/messaging/simp/broker/DefaultSubscriptionRegistry.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -77,7 +77,7 @@ public class DefaultSubscriptionRegistry extends AbstractSubscriptionRegistry {
 	@Nullable
 	private String selectorHeaderName = "selector";
 
-	private volatile boolean selectorHeaderInUse = false;
+	private volatile boolean selectorHeaderInUse;
 
 	private final ExpressionParser expressionParser = new SpelExpressionParser();
 

spring-messaging/src/main/java/org/springframework/messaging/simp/stomp/DefaultStompSession.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -111,7 +111,7 @@ public class DefaultStompSession implements ConnectionHandlingStompSession {
 	private final Map<String, ReceiptHandler> receiptHandlers = new ConcurrentHashMap<>(4);
 
 	/* Whether the client is willfully closing the connection */
-	private volatile boolean closing = false;
+	private volatile boolean closing;
 
 
 	/**

spring-messaging/src/main/java/org/springframework/messaging/simp/user/UserDestinationMessageHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -67,7 +67,7 @@ public class UserDestinationMessageHandler implements MessageHandler, SmartLifec
 	@Nullable
 	private MessageHeaderInitializer headerInitializer;
 
-	private volatile boolean running = false;
+	private volatile boolean running;
 
 	private final Object lifecycleMonitor = new Object();
 

spring-messaging/src/main/java/org/springframework/messaging/tcp/reactor/ReactorNettyTcpClient.java

@@ -87,7 +87,7 @@ public class ReactorNettyTcpClient<P> implements TcpOperations<P> {
 
 	private Log logger = LogFactory.getLog(ReactorNettyTcpClient.class);
 
-	private volatile boolean stopping = false;
+	private volatile boolean stopping;
 
 
 	/**

spring-orm/src/main/java/org/springframework/orm/jpa/ExtendedEntityManagerCreator.java

@@ -439,7 +439,7 @@ private static class ExtendedEntityManagerSynchronization
 		@Nullable
 		private final PersistenceExceptionTranslator exceptionTranslator;
 
-		public volatile boolean closeOnCompletion = false;
+		public volatile boolean closeOnCompletion;
 
 		public ExtendedEntityManagerSynchronization(
 				EntityManager em, @Nullable PersistenceExceptionTranslator exceptionTranslator) {

spring-tx/src/main/java/org/springframework/jca/endpoint/GenericMessageEndpointManager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -161,7 +161,7 @@ public class GenericMessageEndpointManager implements SmartLifecycle, Initializi
 
 	private int phase = DEFAULT_PHASE;
 
-	private volatile boolean running = false;
+	private volatile boolean running;
 
 	private final Object lifecycleMonitor = new Object();
 

spring-web/src/main/java/org/springframework/http/converter/json/Jackson2ObjectMapperBuilder.java

@@ -106,7 +106,7 @@
  */
 public class Jackson2ObjectMapperBuilder {
 
-	private static volatile boolean kotlinWarningLogged = false;
+	private static volatile boolean kotlinWarningLogged;
 
 	private final Log logger = HttpLogging.forLogName(getClass());
 

spring-web/src/main/java/org/springframework/web/context/request/async/DeferredResult.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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 DeferredResult<T> {
 
 	private volatile Object result = RESULT_NONE;
 
-	private volatile boolean expired = false;
+	private volatile boolean expired;
 
 
 	/**

spring-webflux/src/main/java/org/springframework/web/reactive/socket/server/support/HandshakeWebSocketService.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -89,7 +89,7 @@ public class HandshakeWebSocketService implements WebSocketService, Lifecycle {
 	@Nullable
 	private Predicate<String> sessionAttributePredicate;
 
-	private volatile boolean running = false;
+	private volatile boolean running;
 
 
 	/**

spring-webflux/src/main/java/org/springframework/web/reactive/socket/server/upgrade/JettyRequestUpgradeStrategy.java

@@ -66,7 +66,7 @@ public class JettyRequestUpgradeStrategy implements RequestUpgradeStrategy, Life
 	@Nullable
 	private volatile ServletContext servletContext;
 
-	private volatile boolean running = false;
+	private volatile boolean running;
 
 	private final Object lifecycleMonitor = new Object();
 

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -221,7 +221,7 @@ public abstract class FrameworkServlet extends HttpServletBean implements Applic
 	private boolean webApplicationContextInjected = false;
 
 	/** Flag used to detect whether onRefresh has already been called. */
-	private volatile boolean refreshEventReceived = false;
+	private volatile boolean refreshEventReceived;
 
 	/** Monitor for synchronized onRefresh execution. */
 	private final Object onRefreshMonitor = new Object();