Polish

See gh-42798

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/transaction/TransactionManagerCustomizers.java

@@ -59,8 +59,8 @@ public final class TransactionManagerCustomizers {
 	 * @since 3.2.0
 	 */
 	public static TransactionManagerCustomizers of(Collection<? extends TransactionManagerCustomizer<?>> customizers) {
-		return new TransactionManagerCustomizers((customizers != null) ? new ArrayList<>(customizers)
+		return new TransactionManagerCustomizers(
-				: Collections.<TransactionManagerCustomizer<?>>emptyList());
+				(customizers != null) ? new ArrayList<>(customizers) : Collections.emptyList());
 	}
 
 }

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/servlet/DispatcherServletPath.java

@@ -74,7 +74,7 @@ public interface DispatcherServletPath {
 	 * @return the path as a servlet URL mapping
 	 */
 	default String getServletUrlMapping() {
-		if (getPath().equals("") || getPath().equals("/")) {
+		if (getPath().isEmpty() || getPath().equals("/")) {
 			return "/";
 		}
 		if (getPath().contains("*")) {

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/servlet/WebMvcProperties.java

@@ -237,7 +237,7 @@ public class WebMvcProperties {
 		}
 
 		public String getServletMapping() {
-			if (this.path.equals("") || this.path.equals("/")) {
+			if (this.path.isEmpty() || this.path.equals("/")) {
 				return "/";
 			}
 			if (this.path.endsWith("/")) {

spring-boot-project/spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/jdbc/TestDatabaseAutoConfiguration.java

@@ -214,7 +214,7 @@ public class TestDatabaseAutoConfiguration {
 			List<ConfigurationProperty> bound = new ArrayList<>();
 			Binder.get(this.environment, new BoundPropertiesTrackingBindHandler(bound::add))
 				.bind(DATASOURCE_URL_PROPERTY, BINDABLE_STRING);
-			return (!bound.isEmpty()) ? isUsingTestDatasourceUrl(bound.get(0)) : false;
+			return !bound.isEmpty() && isUsingTestDatasourceUrl(bound.get(0));
 		}
 
 		private boolean isUsingTestDatasourceUrl(ConfigurationProperty configurationProperty) {

spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/ConfigurationMetadataAnnotationProcessor.java

@@ -303,7 +303,7 @@ public class ConfigurationMetadataAnnotationProcessor extends AbstractProcessor
 		boolean enabledByDefaultAttribute = (boolean) elementValues.getOrDefault("enableByDefault", true);
 		String defaultAccess = (!enabledByDefaultAttribute) ? "none"
 				: (elementValues.getOrDefault("defaultAccess", "unrestricted").toString()).toLowerCase(Locale.ENGLISH);
-		boolean enabledByDefault = "none".equals(defaultAccess) ? false : enabledByDefaultAttribute;
+		boolean enabledByDefault = !"none".equals(defaultAccess) && enabledByDefaultAttribute;
 		String type = this.metadataEnv.getTypeUtils().getQualifiedName(element);
 		this.metadataCollector.addIfAbsent(ItemMetadata.newGroup(endpointKey, type, type, null));
 		ItemMetadata accessProperty = ItemMetadata.newProperty(endpointKey, "access", endpointAccessEnum(), type, null,

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/log4j2/SpringEnvironmentPropertySource.java

@@ -48,7 +48,7 @@ class SpringEnvironmentPropertySource implements PropertySource {
 	@Override
 	public boolean containsProperty(String key) {
 		Environment environment = this.environment;
-		return (environment != null) ? environment.containsProperty(key) : false;
+		return environment != null && environment.containsProperty(key);
 	}
 
 	void setEnvironment(Environment environment) {

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/tomcat/TomcatWebServer.java

@@ -416,7 +416,7 @@ public class TomcatWebServer implements WebServer {
 			.map(TomcatEmbeddedContext.class::cast)
 			.filter(this::imperative)
 			.map(TomcatEmbeddedContext::getPath)
-			.map((path) -> path.equals("") ? "/" : path)
+			.map((path) -> path.isEmpty() ? "/" : path)
 			.collect(Collectors.joining(" "));
 		return StringUtils.hasText(contextPath) ? contextPath : null;
 	}