Remove unnecessary field initialization in @ConfigurationProperties class

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/jdbc/DataSourceHealthIndicatorProperties.java

@@ -32,7 +32,7 @@ public class DataSourceHealthIndicatorProperties {
 	 * Whether to ignore AbstractRoutingDataSources when creating database health
 	 * indicators.
 	 */
-	private boolean ignoreRoutingDataSources = false;
+	private boolean ignoreRoutingDataSources;
 
 	public boolean isIgnoreRoutingDataSources() {
 		return this.ignoreRoutingDataSources;

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/elastic/ElasticProperties.java

@@ -83,7 +83,7 @@ public class ElasticProperties extends StepRegistryProperties {
 	 * Whether to enable _source in the default index template when auto-creating the
 	 * index.
 	 */
-	private boolean enableSource = false;
+	private boolean enableSource;
 
 	public String getHost() {
 		return this.host;

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/stackdriver/StackdriverProperties.java

@@ -52,7 +52,7 @@ public class StackdriverProperties extends StepRegistryProperties {
 	 * published as the GAUGE MetricKind. When true, counter metrics are published as the
 	 * CUMULATIVE MetricKind.
 	 */
-	private boolean useSemanticMetricTypes = false;
+	private boolean useSemanticMetricTypes;
 
 	/**
 	 * Prefix for metric type. Valid prefixes are described in the Google Cloud

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/tracing/TracingProperties.java

@@ -281,7 +281,7 @@ public static class Brave {
 		 * between client and server spans. Requires B3 propagation and a compatible
 		 * backend.
 		 */
-		private boolean spanJoiningSupported = false;
+		private boolean spanJoiningSupported;
 
 		public boolean isSpanJoiningSupported() {
 			return this.spanJoiningSupported;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/RabbitProperties.java

@@ -937,7 +937,7 @@ public static class DirectContainer extends AmqpContainer {
 		 * Whether to fail if the queues declared by the container are not available on
 		 * the broker.
 		 */
-		private boolean missingQueuesFatal = false;
+		private boolean missingQueuesFatal;
 
 		public Integer getConsumersPerQueue() {
 			return this.consumersPerQueue;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/context/MessageSourceProperties.java

@@ -74,13 +74,13 @@ public class MessageSourceProperties {
 	 * Whether to always apply the MessageFormat rules, parsing even messages without
 	 * arguments.
 	 */
-	private boolean alwaysUseMessageFormat = false;
+	private boolean alwaysUseMessageFormat;
 
 	/**
 	 * Whether to use the message code as the default message instead of throwing a
 	 * "NoSuchMessageException". Recommended during development only.
 	 */
-	private boolean useCodeAsDefaultMessage = false;
+	private boolean useCodeAsDefaultMessage;
 
 	public List<String> getBasename() {
 		return this.basename;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/web/SpringDataWebProperties.java

@@ -60,7 +60,7 @@ public static class Pageable {
 		 * Whether to expose and assume 1-based page number indexes. Defaults to "false",
 		 * meaning a page number of 0 in the request equals the first page.
 		 */
-		private boolean oneIndexedParameters = false;
+		private boolean oneIndexedParameters;
 
 		/**
 		 * General prefix to be prepended to the page number and page size parameters.

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/elasticsearch/ElasticsearchProperties.java

@@ -60,7 +60,7 @@ public class ElasticsearchProperties {
 	/**
 	 * Whether to enable socket keep alive between client and Elasticsearch.
 	 */
-	private boolean socketKeepAlive = false;
+	private boolean socketKeepAlive;
 
 	/**
 	 * Prefix added to the path of every request sent to Elasticsearch.

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/flyway/FlywayProperties.java

@@ -247,7 +247,7 @@ public class FlywayProperties {
 	 * Whether to validate migrations and callbacks whose scripts do not obey the correct
 	 * naming convention.
 	 */
-	private boolean validateMigrationNaming = false;
+	private boolean validateMigrationNaming;
 
 	/**
 	 * Whether to automatically call validate when performing a migration.

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/GraphQlProperties.java

@@ -180,7 +180,7 @@ public static class Printer {
 			 * Whether the endpoint that prints the schema is enabled. Schema is available
 			 * under spring.graphql.path + "/schema".
 			 */
-			private boolean enabled = false;
+			private boolean enabled;
 
 			public boolean isEnabled() {
 				return this.enabled;
@@ -204,7 +204,7 @@ public static class Graphiql {
 		/**
 		 * Whether the default GraphiQL UI is enabled.
 		 */
-		private boolean enabled = false;
+		private boolean enabled;
 
 		public String getPath() {
 			return this.path;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/h2/H2ConsoleProperties.java

@@ -38,7 +38,7 @@ public class H2ConsoleProperties {
 	/**
 	 * Whether to enable the console.
 	 */
-	private boolean enabled = false;
+	private boolean enabled;
 
 	private final Settings settings = new Settings();
 
@@ -70,12 +70,12 @@ public static class Settings {
 		/**
 		 * Whether to enable trace output.
 		 */
-		private boolean trace = false;
+		private boolean trace;
 
 		/**
 		 * Whether to enable remote access.
 		 */
-		private boolean webAllowOthers = false;
+		private boolean webAllowOthers;
 
 		/**
 		 * Password to access preferences and tools of H2 Console.

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/integration/IntegrationProperties.java

@@ -127,7 +127,7 @@ public static class Endpoint {
 		 * Whether to throw an exception when a reply is not expected anymore by a
 		 * gateway.
 		 */
-		private boolean throwExceptionOnLateReply = false;
+		private boolean throwExceptionOnLateReply;
 
 		/**
 		 * List of message header names that should not be populated into Message

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jackson/JacksonProperties.java

@@ -110,7 +110,7 @@ public class JacksonProperties {
 	 * Time zone used when formatting dates. For instance, "America/Los_Angeles" or
 	 * "GMT+10".
 	 */
-	private TimeZone timeZone = null;
+	private TimeZone timeZone;
 
 	/**
 	 * Locale used for formatting.

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jms/JmsProperties.java

@@ -37,7 +37,7 @@ public class JmsProperties {
 	/**
 	 * Whether the default destination type is topic.
 	 */
-	private boolean pubSubDomain = false;
+	private boolean pubSubDomain;
 
 	/**
 	 * Connection factory JNDI name. When set, takes precedence to others connection
@@ -48,7 +48,7 @@ public class JmsProperties {
 	/**
 	 * Whether the subscription is durable.
 	 */
-	private boolean subscriptionDurable = false;
+	private boolean subscriptionDurable;
 
 	/**
 	 * Client id of the connection.
@@ -115,7 +115,7 @@ public static class Cache {
 		/**
 		 * Whether to cache message consumers.
 		 */
-		private boolean consumers = false;
+		private boolean consumers;
 
 		/**
 		 * Whether to cache message producers.
@@ -423,7 +423,7 @@ public static class Session {
 			/**
 			 * Whether to use transacted sessions.
 			 */
-			private boolean transacted = false;
+			private boolean transacted;
 
 			public AcknowledgeMode getAcknowledgeMode() {
 				return this.acknowledgeMode;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jms/activemq/ActiveMQProperties.java

@@ -67,7 +67,7 @@ public class ActiveMQProperties {
 	 * Whether to stop message delivery before re-delivering messages from a rolled back
 	 * transaction. This implies that message order is not preserved when this is enabled.
 	 */
-	private boolean nonBlockingRedelivery = false;
+	private boolean nonBlockingRedelivery;
 
 	/**
 	 * Time to wait on message sends for a response. Set it to 0 to wait forever.

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jmx/JmxProperties.java

@@ -31,12 +31,12 @@ public class JmxProperties {
 	/**
 	 * Expose Spring's management beans to the JMX domain.
 	 */
-	private boolean enabled = false;
+	private boolean enabled;
 
 	/**
 	 * Whether unique runtime object names should be ensured.
 	 */
-	private boolean uniqueNames = false;
+	private boolean uniqueNames;
 
 	/**
 	 * MBeanServer bean name.

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/kafka/KafkaProperties.java

@@ -1057,13 +1057,13 @@ public enum Type {
 		 * Whether the container should fail to start if at least one of the configured
 		 * topics are not present on the broker.
 		 */
-		private boolean missingTopicsFatal = false;
+		private boolean missingTopicsFatal;
 
 		/**
 		 * Whether the container stops after the current record is processed or after all
 		 * the records from the previous poll are processed.
 		 */
-		private boolean immediateStop = false;
+		private boolean immediateStop;
 
 		/**
 		 * Whether to auto start the container.
@@ -1669,7 +1669,7 @@ public static class Backoff {
 				/**
 				 * Whether to have the backoff delays.
 				 */
-				private boolean random = false;
+				private boolean random;
 
 				public Duration getDelay() {
 					return this.delay;
@@ -1714,12 +1714,12 @@ public static class Cleanup {
 		/**
 		 * Cleanup the application’s local state directory on startup.
 		 */
-		private boolean onStartup = false;
+		private boolean onStartup;
 
 		/**
 		 * Cleanup the application’s local state directory on shutdown.
 		 */
-		private boolean onShutdown = false;
+		private boolean onShutdown;
 
 		public boolean isOnStartup() {
 			return this.onStartup;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/ldap/LdapProperties.java

@@ -142,13 +142,13 @@ public static class Template {
 		 * Whether PartialResultException should be ignored in searches through the
 		 * LdapTemplate.
 		 */
-		private boolean ignorePartialResultException = false;
+		private boolean ignorePartialResultException;
 
 		/**
 		 * Whether NameNotFoundException should be ignored in searches through the
 		 * LdapTemplate.
 		 */
-		private boolean ignoreNameNotFoundException = false;
+		private boolean ignoreNameNotFoundException;
 
 		/**
 		 * Whether SizeLimitExceededException should be ignored in searches through the

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mail/MailProperties.java

@@ -151,7 +151,7 @@ public static class Ssl {
 		 * Whether to enable SSL support. If enabled, 'mail.(protocol).ssl.enable'
 		 * property is set to 'true'.
 		 */
-		private boolean enabled = false;
+		private boolean enabled;
 
 		/**
 		 * SSL bundle name. If set, 'mail.(protocol).ssl.socketFactory' property is set to

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/MongoProperties.java

@@ -59,7 +59,7 @@ public class MongoProperties {
 	/**
 	 * Mongo server port. Cannot be set with URI.
 	 */
-	private Integer port = null;
+	private Integer port;
 
 	/**
 	 * Additional server hosts. Cannot be set with URI or if 'host' is not specified.

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mustache/MustacheProperties.java

@@ -154,13 +154,13 @@ public static class Servlet {
 		 * Whether HttpServletRequest attributes are allowed to override (hide) controller
 		 * generated model attributes of the same name.
 		 */
-		private boolean allowRequestOverride = false;
+		private boolean allowRequestOverride;
 
 		/**
 		 * Whether HttpSession attributes are allowed to override (hide) controller
 		 * generated model attributes of the same name.
 		 */
-		private boolean allowSessionOverride = false;
+		private boolean allowSessionOverride;
 
 		/**
 		 * Whether to enable template caching.
@@ -176,13 +176,13 @@ public static class Servlet {
 		 * Whether all request attributes should be added to the model prior to merging
 		 * with the template.
 		 */
-		private boolean exposeRequestAttributes = false;
+		private boolean exposeRequestAttributes;
 
 		/**
 		 * Whether all HttpSession attributes should be added to the model prior to
 		 * merging with the template.
 		 */
-		private boolean exposeSessionAttributes = false;
+		private boolean exposeSessionAttributes;
 
 		/**
 		 * Whether to expose a RequestContext for use by Spring's macro library, under the

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/neo4j/Neo4jProperties.java

@@ -151,12 +151,12 @@ public static class Pool {
 		/**
 		 * Whether to enable metrics.
 		 */
-		private boolean metricsEnabled = false;
+		private boolean metricsEnabled;
 
 		/**
 		 * Whether to log leaked sessions.
 		 */
-		private boolean logLeakedSessions = false;
+		private boolean logLeakedSessions;
 
 		/**
 		 * Maximum amount of connections in the connection pool towards a single database.
@@ -236,7 +236,7 @@ public static class Security {
 		/**
 		 * Whether the driver should use encrypted traffic.
 		 */
-		private boolean encrypted = false;
+		private boolean encrypted;
 
 		/**
 		 * Trust strategy to use.

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/orm/jpa/JpaProperties.java

@@ -62,12 +62,12 @@ public class JpaProperties {
 	/**
 	 * Whether to initialize the schema on startup.
 	 */
-	private boolean generateDdl = false;
+	private boolean generateDdl;
 
 	/**
 	 * Whether to enable logging of SQL statements.
 	 */
-	private boolean showSql = false;
+	private boolean showSql;
 
 	/**
 	 * Register OpenEntityManagerInViewInterceptor. Binds a JPA EntityManager to the

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/pulsar/PulsarProperties.java

@@ -369,7 +369,7 @@ public static class Function {
 		 * Whether to throw an exception if any failure is encountered during server
 		 * shutdown while enforcing stop policy on functions.
 		 */
-		private boolean propagateStopFailures = false;
+		private boolean propagateStopFailures;
 
 		public boolean isFailFast() {
 			return this.failFast;
@@ -594,7 +594,7 @@ public static class Consumer {
 		 * Whether to read messages from the compacted topic rather than the full message
 		 * backlog.
 		 */
-		private boolean readCompacted = false;
+		private boolean readCompacted;
 
 		/**
 		 * Dead letter policy to use.
@@ -610,7 +610,7 @@ public static class Consumer {
 		/**
 		 * Whether to auto retry messages.
 		 */
-		private boolean retryEnable = false;
+		private boolean retryEnable;
 
 		public String getName() {
 			return this.name;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/quartz/QuartzProperties.java

@@ -61,12 +61,12 @@ public class QuartzProperties {
 	/**
 	 * Whether to wait for running jobs to complete on shutdown.
 	 */
-	private boolean waitForJobsToCompleteOnShutdown = false;
+	private boolean waitForJobsToCompleteOnShutdown;
 
 	/**
 	 * Whether configured jobs should overwrite existing job definitions.
 	 */
-	private boolean overwriteExistingJobs = false;
+	private boolean overwriteExistingJobs;
 
 	/**
 	 * Additional Quartz Scheduler properties.