diff --git a/buildSrc/src/main/java/org/springframework/boot/build/antora/AntoraAsciidocAttributes.java b/buildSrc/src/main/java/org/springframework/boot/build/antora/AntoraAsciidocAttributes.java
index ce341653e7b5..3d5bec724ae7 100644
--- a/buildSrc/src/main/java/org/springframework/boot/build/antora/AntoraAsciidocAttributes.java
+++ b/buildSrc/src/main/java/org/springframework/boot/build/antora/AntoraAsciidocAttributes.java
@@ -56,7 +56,7 @@ public class AntoraAsciidocAttributes {
 	public AntoraAsciidocAttributes(Project project, BomExtension dependencyBom,
 			Map<String, String> dependencyVersions) {
 		this.version = String.valueOf(project.getVersion());
-		this.latestVersion = Boolean.valueOf(String.valueOf(project.findProperty("latestVersion")));
+		this.latestVersion = Boolean.parseBoolean(String.valueOf(project.findProperty("latestVersion")));
 		this.artifactRelease = ArtifactRelease.forProject(project);
 		this.libraries = dependencyBom.getLibraries();
 		this.dependencyVersions = dependencyVersions;
diff --git a/buildSrc/src/main/java/org/springframework/boot/build/classpath/CheckClasspathForProhibitedDependencies.java b/buildSrc/src/main/java/org/springframework/boot/build/classpath/CheckClasspathForProhibitedDependencies.java
index abc1098e8d37..aad903cc1886 100644
--- a/buildSrc/src/main/java/org/springframework/boot/build/classpath/CheckClasspathForProhibitedDependencies.java
+++ b/buildSrc/src/main/java/org/springframework/boot/build/classpath/CheckClasspathForProhibitedDependencies.java
@@ -70,36 +70,24 @@ public void checkForProhibitedDependencies() {
 
 	private boolean prohibited(ModuleVersionIdentifier id) {
 		String group = id.getGroup();
-		if (group.equals("javax.batch")) {
-			return false;
-		}
-		if (group.equals("javax.cache")) {
-			return false;
-		}
-		if (group.equals("javax.money")) {
-			return false;
-		}
-		if (group.equals("org.codehaus.groovy")) {
-			return true;
-		}
-		if (group.equals("org.eclipse.jetty.toolchain")) {
-			return true;
+		switch (group) {
+			case "javax.batch", "javax.cache", "javax.money" -> {
+				return false;
+			}
+			case "commons-logging", "org.codehaus.groovy", "org.eclipse.jetty.toolchain",
+					"org.apache.geronimo.specs" -> {
+				return true;
+			}
 		}
 		if (group.startsWith("javax")) {
 			return true;
 		}
-		if (group.equals("commons-logging")) {
-			return true;
-		}
 		if (group.equals("org.slf4j") && id.getName().equals("jcl-over-slf4j")) {
 			return true;
 		}
 		if (group.startsWith("org.jboss.spec")) {
 			return true;
 		}
-		if (group.equals("org.apache.geronimo.specs")) {
-			return true;
-		}
 		return group.equals("com.sun.activation");
 	}
 
diff --git a/spring-boot-project/spring-boot-tools/spring-boot-test-support/src/test/java/org/springframework/boot/testsupport/classpath/ModifiedClassPathExtensionForkParameterizedTests.java b/spring-boot-project/spring-boot-tools/spring-boot-test-support/src/test/java/org/springframework/boot/testsupport/classpath/ModifiedClassPathExtensionForkParameterizedTests.java
index 2a1bc4f47e55..2e94dcd3ecbe 100644
--- a/spring-boot-project/spring-boot-tools/spring-boot-test-support/src/test/java/org/springframework/boot/testsupport/classpath/ModifiedClassPathExtensionForkParameterizedTests.java
+++ b/spring-boot-project/spring-boot-tools/spring-boot-test-support/src/test/java/org/springframework/boot/testsupport/classpath/ModifiedClassPathExtensionForkParameterizedTests.java
@@ -37,14 +37,10 @@ class ModifiedClassPathExtensionForkParameterizedTests {
 	@ParameterizedTest
 	@ValueSource(strings = { "one", "two", "three" })
 	void testIsInvokedOnceForEachArgument(String argument) {
-		if (argument.equals("one")) {
-			assertThat(arguments).isEmpty();
-		}
-		else if (argument.equals("two")) {
-			assertThat(arguments).doesNotContain("two", "three");
-		}
-		else if (argument.equals("three")) {
-			assertThat(arguments).doesNotContain("three");
+		switch (argument) {
+			case "one" -> assertThat(arguments).isEmpty();
+			case "two" -> assertThat(arguments).doesNotContain("two", "three");
+			case "three" -> assertThat(arguments).doesNotContain("three");
 		}
 		arguments.add(argument);
 	}
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/LoggingSystemProperties.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/LoggingSystemProperties.java
index a39c8afbdb0a..51a03bb308e5 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/LoggingSystemProperties.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/LoggingSystemProperties.java
@@ -219,7 +219,7 @@ private PropertyResolver getPropertyResolver() {
 		if (this.environment instanceof ConfigurableEnvironment configurableEnvironment) {
 			PropertySourcesPropertyResolver resolver = new PropertySourcesPropertyResolver(
 					configurableEnvironment.getPropertySources());
-			resolver.setConversionService(((ConfigurableEnvironment) this.environment).getConversionService());
+			resolver.setConversionService(configurableEnvironment.getConversionService());
 			resolver.setIgnoreUnresolvableNestedPlaceholders(true);
 			return resolver;
 		}
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/tomcat/NestedJarResourceSet.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/tomcat/NestedJarResourceSet.java
index 47a9f5b5711e..6e6606c6a677 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/tomcat/NestedJarResourceSet.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/tomcat/NestedJarResourceSet.java
@@ -128,7 +128,7 @@ protected boolean isMultiRelease() {
 				}
 			}
 		}
-		return this.multiRelease.booleanValue();
+		return this.multiRelease;
 	}
 
 	@Override