diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/RabbitProperties.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/RabbitProperties.java
index ac8fc182ad..f959863a1b 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/RabbitProperties.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/RabbitProperties.java
@@ -900,7 +900,7 @@ public class RabbitProperties {
 		 * Whether the container will support listeners that consume native stream
 		 * messages instead of Spring AMQP messages.
 		 */
-		boolean nativeListener;
+		private boolean nativeListener;
 
 		public boolean isNativeListener() {
 			return this.nativeListener;
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/scan/ScanBean.java b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/scan/ScanBean.java
index 2bb12a7756..b3bc4a3b16 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/scan/ScanBean.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/scan/ScanBean.java
@@ -18,7 +18,7 @@ package org.springframework.boot.autoconfigure.condition.scan;
 
 public class ScanBean {
 
-	private String value;
+	private final String value;
 
 	public ScanBean(String value) {
 		this.value = value;
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/SpringApplication.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/SpringApplication.java
index 2f3f19ba92..b03aa75c1f 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/SpringApplication.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/SpringApplication.java
@@ -301,11 +301,11 @@ public class SpringApplication {
 			prepareContext(bootstrapContext, context, environment, listeners, applicationArguments, printedBanner);
 			refreshContext(context);
 			afterRefresh(context, applicationArguments);
-			Duration timeTakeToStartup = Duration.ofNanos(System.nanoTime() - startTime);
+			Duration timeTakenToStartup = Duration.ofNanos(System.nanoTime() - startTime);
 			if (this.logStartupInfo) {
-				new StartupInfoLogger(this.mainApplicationClass).logStarted(getApplicationLog(), timeTakeToStartup);
+				new StartupInfoLogger(this.mainApplicationClass).logStarted(getApplicationLog(), timeTakenToStartup);
 			}
-			listeners.started(context, timeTakeToStartup);
+			listeners.started(context, timeTakenToStartup);
 			callRunners(context, applicationArguments);
 		}
 		catch (Throwable ex) {
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/StartupInfoLogger.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/StartupInfoLogger.java
index 35a8629c27..aa79a5c65e 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/StartupInfoLogger.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/StartupInfoLogger.java
@@ -56,9 +56,9 @@ class StartupInfoLogger {
 		applicationLog.debug(LogMessage.of(this::getRunningMessage));
 	}
 
-	void logStarted(Log applicationLog, Duration timeTakeToStartup) {
+	void logStarted(Log applicationLog, Duration timeTakenToStartup) {
 		if (applicationLog.isInfoEnabled()) {
-			applicationLog.info(getStartedMessage(timeTakeToStartup));
+			applicationLog.info(getStartedMessage(timeTakenToStartup));
 		}
 	}
 
@@ -83,12 +83,12 @@ class StartupInfoLogger {
 		return message;
 	}
 
-	private CharSequence getStartedMessage(Duration timeTakeToStartup) {
+	private CharSequence getStartedMessage(Duration timeTakenToStartup) {
 		StringBuilder message = new StringBuilder();
 		message.append("Started ");
 		appendApplicationName(message);
 		message.append(" in ");
-		message.append(timeTakeToStartup.toMillis() / 1000.0);
+		message.append(timeTakenToStartup.toMillis() / 1000.0);
 		message.append(" seconds");
 		try {
 			double uptime = ManagementFactory.getRuntimeMXBean().getUptime() / 1000.0;
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/builder/SpringApplicationBuilder.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/builder/SpringApplicationBuilder.java
index 515fe29cfc..ac18433f34 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/builder/SpringApplicationBuilder.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/builder/SpringApplicationBuilder.java
@@ -604,7 +604,7 @@ public class SpringApplicationBuilder {
 	/**
 	 * Whether to allow circular references between beans and automatically try to resolve
 	 * them.
-	 * @param allowCircularReferences whether circular references are allows
+	 * @param allowCircularReferences whether circular references are allowed
 	 * @return the current builder
 	 * @since 2.6.0
 	 * @see AbstractAutowireCapableBeanFactory#setAllowCircularReferences(boolean)
diff --git a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/StartupInfoLoggerTests.java b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/StartupInfoLoggerTests.java
index 4f41da83a6..3910168266 100644
--- a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/StartupInfoLoggerTests.java
+++ b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/StartupInfoLoggerTests.java
@@ -56,8 +56,8 @@ class StartupInfoLoggerTests {
 	@Test
 	void startedFormat() {
 		given(this.log.isInfoEnabled()).willReturn(true);
-		Duration timeTakeToStartup = Duration.ofMillis(10);
-		new StartupInfoLogger(getClass()).logStarted(this.log, timeTakeToStartup);
+		Duration timeTakenToStartup = Duration.ofMillis(10);
+		new StartupInfoLogger(getClass()).logStarted(this.log, timeTakenToStartup);
 		ArgumentCaptor<Object> captor = ArgumentCaptor.forClass(Object.class);
 		verify(this.log).info(captor.capture());
 		assertThat(captor.getValue().toString()).matches("Started " + getClass().getSimpleName()